Question 1

We maintain strict processing tolerances for BK7 & K9 optical glass parts, including dimensional, surface and optical tolerances.

Accepted Answer

At Felix Glass, we maintain strict processing tolerances for all BK7 and K9 optical glass parts to ensure consistent quality and performance for your applications. Our tolerance standards cover three key areas: dimensional accuracy, surface quality, and optical performance.For dimensional accuracy, we can achieve a typical tolerance of ±0.01mm for most standard optical glass parts. For high-precision applications, we can provide tighter tolerances down to ±0.005mm, depending on the complexity of the part and the material specifications. Our CNC machining equipment is calibrated regularly to ensure consistent accuracy across all production batches.In terms of surface quality, we can achieve a surface roughness of up to Ra 0.005μm, which ensures high optical clarity and minimal light scattering. We also control surface flatness, with typical flatness tolerances up to λ/10 at 632.8nm for precision applications. For anti-reflective coated parts, we also ensure coating uniformity and adhesion to meet industry standards.Optical performance tolerances include transmittance and refractive index consistency. Our BK7 and K9 optical glass parts are tested for visible light transmittance, with typical values above 91% for uncoated parts and above 98% for AR-coated parts. We also ensure consistent refractive index across all batches to avoid variations in optical performance.All our processing tolerances are verified through rigorous quality control testing, including dimensional inspection with coordinate measuring machines (CMM), surface roughness testing, flatness measurement with interferometers, and optical transmittance testing with spectrophotometers. This comprehensive quality control process ensures that every optical glass part we produce meets the required specifications.If you have specific tolerance requirements for your project, please contact us with your detailed specifications, and our engineering team will confirm our capabilities and provide you with a customized solution.

Question 2

echnical consulting services for optical projects.

Accepted Answer

Our custom precision optical components are extensively engineered and supplied for diversified high-end industries, covering medical diagnostic devices, aerospace optoelectronic systems, automotive LiDAR & optical sensors, industrial laser processing equipment, automated machine vision systems, and laboratory-grade scientific measuring instruments globally. Every industry field poses distinct working conditions, wavelength demands and environmental challenges, so customized optical substrate picking and functional coating matching become the core of stable product performance. For medical device optics such as endoscope lenses, medical display cover glass and detection optical windows, we select biocompatible optical glass, medical-grade fused silica or sapphire substrates, paired with customized AR/AG/AF composite coatings to guarantee high light transmittance, clear imaging and stain resistance under long-term sterile working environments. In rigorous aerospace systems exposed to drastic temperature fluctuation, high altitude pressure and UV radiation, high-hardness sapphire, high-temperature resistant fused silica and special infrared crystalline materials are prioritized. These raw materials cooperate with high-durability anti-abrasion optical coatings to withstand harsh outer-space ambient erosion and keep consistent optical transmission. Automotive optical sensors including LiDAR domes, automotive display protective glass and vehicle infrared sensing windows demand outstanding temperature shock resistance and anti-glare property. We configure BK7, sapphire and infrared crystalline materials alongside tailored functional coatings to adapt to outdoor temperature variation, sunlight irradiation and complex road operating environments. Industrial laser equipment optics including laser windows and focusing lenses mainly adopt high-purity fused silica, ZnSe and ZnS infrared crystals matched with laser anti-reflection coatings, lowering laser energy loss and improving laser transmission efficiency during continuous high-power laser operation. Machine vision optical lenses and protective windows for automated inspection need stable visible light transmission and anti-dazzle performance; we mostly deploy premium BK7 optical glass with professional AR or AG coating solutions to eliminate ambient light interference and boost detection accuracy for automated production lines. Various precision optical parts for scientific laboratory instruments use customized BK7, fused silica and infrared crystals with precision optical coatings, satisfying strict testing standards of spectral transmission and dimensional tolerance in scientific research scenarios. Targeted material selection plus personalized coating configuration according to specific application scenarios effectively maximizes light transmittance, optimizes optical stability and extends component service lifespan, enabling our optical parts to deliver reliable optimal performance across all above mainstream application fields.Yes, we offer engineering support including material selection, optical structure optimization, coating design advice, and manufacturability evaluation (DFM). This helps clients improve performance while reducing production risks and costs.

Question 3

K7 and K9 optical glass are widely used in optical instruments, cameras, lasers and industrial optical components.

Accepted Answer

BK7 and K9 optical glass are versatile materials suitable for a wide range of optical applications, thanks to their excellent optical properties, stability and machinability.One of the most common applications of BK7 and K9 optical glass is in optical instruments such as cameras, microscopes, telescopes and binoculars. In cameras, they are used to make lenses that capture clear and sharp images. In microscopes, they are used for objective lenses and eyepieces that magnify small objects. In telescopes and binoculars, they are used for objective lenses and prisms that gather and focus light. These applications require high optical clarity and consistent performance, which BK7 and K9 optical glass can provide.BK7 and K9 optical glass are also widely used in laser systems. They are used for optical windows, lenses, prisms and beam splitters that help to guide and focus laser beams. Their high transmittance ensures that the laser beam passes through the material with minimal loss, and their stability ensures consistent performance even under high-power laser conditions. Whether you are working with a low-power consumer laser or a high-power industrial laser system, BK7 and K9 optical glass can meet your requirements.In the medical industry, BK7 and K9 optical glass are used in various medical devices such as endoscopes, surgical microscopes and diagnostic equipment. Their high optical clarity and biocompatibility make them suitable for applications that require clear imaging and contact with the human body. They are also used in laboratory equipment such as spectrometers and analytical instruments, where their stability and accuracy are critical for reliable results.Industrial applications of BK7 and K9 optical glass include optical windows for industrial equipment, protective covers for sensors, and prisms for automation systems. They are also used in testing and measurement equipment, where their stability and accuracy are essential for reliable performance. In addition, they are used in the automotive industry for applications such as headlight lenses and sensor components.BK7 and K9 optical glass are also used in consumer electronics such as smartphones, tablets and digital cameras. They are used for camera lenses, display protectors and other optical components that require high clarity and durability. Their cost-effectiveness and good performance make them a popular choice for consumer electronic applications.In addition to these applications, BK7 and K9 optical glass can be customized to meet the specific requirements of various projects. Our factory provides customized BK7 and K9 optical glass parts, including cutting, polishing, coating and CNC machining services, to ensure that the components meet the exact specifications of your application. Whether you are working on a consumer product, an industrial project or a scientific research application, BK7 and K9 optical glass offer the performance, versatility and reliability you need.

Question 4

BK7 and K9 optical glass feature high transmittance, stable properties, good machinability and cost-effectiveness.

Accepted Answer

BK7 and K9 optical glass are the most popular choices in the optical industry, thanks to a range of key advantages that make them suitable for countless applications worldwide.First and foremost, they feature excellent optical clarity with a visible light transmittance of over 91%, which ensures that light passes through the material with minimal loss. This high transmittance is critical for applications such as camera lenses, microscope objectives, telescope eyepieces and other optical instruments, where clear and undistorted images are essential. Whether you are designing a consumer camera or a high-precision scientific instrument, BK7 and K9 optical glass can provide the optical clarity you need.Second, BK7 and K9 optical glass have stable physical and chemical properties. They have a low thermal expansion coefficient, which means they do not expand or contract significantly with changes in temperature. This stability ensures consistent optical performance even in varying environmental conditions, making them suitable for both indoor and outdoor applications. They also have excellent chemical resistance, which protects them from corrosion and degradation caused by exposure to moisture, acids and other environmental factors. This durability ensures that your optical components will maintain their performance over a long service life.Third, BK7 and K9 optical glass are highly machinable. They can be easily cut, ground, polished, drilled and coated to meet custom design requirements. This versatility allows manufacturers to produce a wide range of optical components, from simple flat windows and spherical lenses to precision prisms. Their good machinability also means that they can be produced in large quantities with consistent quality, making them a cost-effective choice for mass production projects.Fourth, BK7 and K9 optical glass are cost-effective compared to other high-performance optical materials. While they offer excellent optical performance, they are more affordable than many specialized optical glasses, making them accessible to a wide range of applications, from consumer electronics to industrial equipment. This cost-effectiveness, combined with their reliable performance, makes them the preferred choice for many optical designers and manufacturers.Finally, BK7 and K9 optical glass have a long history of use in the optical industry, which means their properties and performance are well understood and widely accepted. This established track record gives designers and manufacturers confidence in their suitability for various applications.Our factory provides high-quality BK7 and K9 optical glass parts with customized processing services, including cutting, polishing, coating and CNC machining, to meet your specific application needs. Whether you need standard components or custom-designed optical parts, we can deliver products that meet your exact specifications.

Question 5

BK7 and K9 optical glass are nearly identical in optical performance, differing mainly in regional manufacturing standards.

Accepted Answer

BK7 and K9 are the two most widely used optical glass materials in the global optical industry, often seen as interchangeable alternatives. Many customers ask about their differences, so let’s break down the key similarities and distinctions clearly.BK7, also known as borosilicate crown glass, is a European standard optical glass defined by ISO and DIN specifications. It is manufactured under strict international quality control systems, ensuring consistent optical performance across all production batches. K9, on the other hand, is the Chinese equivalent of BK7, formulated to match BK7’s optical and physical properties to the highest possible degree. Both materials share nearly identical core parameters, including a visible light transmittance of over 91%, a low thermal expansion coefficient, excellent chemical resistance, and outstanding machinability.The primary difference between BK7 and K9 lies in their regional manufacturing standards and certifications. BK7 is widely recognized and accepted in European, American and other Western markets, while K9 is the preferred choice in Asian markets. In most practical applications, such as optical lenses, prisms, optical windows and industrial optical components, the two materials are fully interchangeable, as their refractive index, dispersion, and other key optical specifications are nearly identical. For example, if you are producing a standard camera lens, microscope component or industrial optical window, K9 can serve as a cost-effective alternative to BK7 without sacrificing any performance.Another minor difference is the production process and quality control standards. While both materials meet high-quality requirements, some manufacturers may have slight variations in their production processes, leading to minor differences in surface quality or batch consistency. However, these variations are usually negligible for most industrial and commercial applications, especially when working with a reliable supplier like Felix Glass.Our factory provides both BK7 and K9 optical glass parts with customized processing services, including precision cutting, surface polishing, anti-reflective coating and CNC machining, to meet the specific requirements of your projects. Whether you need BK7 optical glass for international projects or K9 optical glass for cost-effective solutions, we can deliver high-quality products that meet your exact specifications.

Question 6

We offer fast quotations for BK7 & K9 optical glass parts, usually within 24 hours for standard projects.

Accepted Answer

At Felix Glass, we understand that fast and accurate quotation is critical for your project timelines and procurement plans, especially when you have urgent orders, tight deadlines, or time-sensitive product development needs. We have established a dedicated priority quotation process to ensure you get a detailed, professional quote in the fastest possible time, without compromising on accuracy or completeness.To get a faster quote, you can take the following steps:1. **Contact our sales team directly**: You can call our international sales hotline, send an urgent email to our priority quotation mailbox, or use our online instant chat service. Our sales team is available 24/7 to respond to urgent enquiries, and we will assign a dedicated account manager to your request immediately.2. **Provide complete product specifications**: To avoid back-and-forth communication and speed up the quotation process, please provide as much detailed information as possible in your initial enquiry, including: product type (optical dome, display glass, AR/AG/AF coated glass, etc.), material requirements (BK7, fused silica, sapphire, etc.), size, thickness, tolerance, coating requirements, quantity, delivery deadline, and any special processing needs (drilling, etching, tempering, etc.).3. **Attach drawings or samples**: If you have product drawings, 3D files, or sample photos, please attach them to your email. This allows our engineering team to directly evaluate the production process and cost, avoiding misunderstandings and reducing quotation time.4. **Specify your urgency level**: Clearly mark "URGENT" in your email subject line, and inform us of your required quotation deadline and order delivery time. We will prioritize your enquiry in our production and quotation queue, ensuring we get back to you within 24 hours for standard products, and 48 hours for custom complex products.Our priority quotation process includes:- Immediate response to your urgent enquiry within 2 hours- Dedicated engineering team to evaluate product feasibility and cost- Detailed quotation including product price, tooling cost (if any), sample cost, lead time, payment terms, and shipping cost- Free sample evaluation and technical support to ensure the product meets your requirements- Flexible production scheduling to meet your urgent delivery needsIf you have any questions about our quotation process or need help preparing your specifications, please contact our sales team today.

Question 7

FELIX GLASS offers flexible and secure payment terms for global customers, including T/T, L/C, and other international trade payment methods, ensuring safe and smooth transactions.

Accepted Answer

At FELIX GLASS, we offer a variety of flexible, secure, and internationally recognized payment terms to meet the different needs of our global customers, ensuring safe, transparent, and smooth transactions for both parties. We understand that payment terms are a critical part of international trade, and we are committed to providing our customers with reliable, mutually beneficial payment solutions.Our standard payment terms for global customers are as follows:1. **T/T (Telegraphic Transfer)**: This is our most commonly used payment method, suitable for most orders. The standard terms are 30% deposit in advance to confirm the order and start production, and 70% balance payment before shipment (or against copy of B/L). For long-term cooperative customers with good credit, we can negotiate more flexible terms, such as 20% deposit and 80% balance against copy of B/L.2. **L/C (Letter of Credit)**: We accept irrevocable sight L/C issued by reputable international banks, which is the safest payment method for large orders and first-time cooperative customers. This ensures that the customer's payment is guaranteed by the bank, and we can arrange production and shipment with peace of mind.3. **Other payment methods**: For specific customer needs, we can also accept payment methods such as Western Union, MoneyGram, PayPal (for small sample fees), and D/P (Documents against Payment), subject to mutual negotiation and credit evaluation.We also offer flexible payment terms for different order types:- **Sample orders**: 100% payment in advance, including sample cost and shipping cost.- **Small batch orders**: 30% deposit in advance, 70% balance before shipment.- **Large mass production orders**: Negotiable payment terms, such as 20% deposit, 80% L/C at sight, or installment payments according to production progress.- **Long-term cooperative customers**: We can provide more favorable payment terms, such as extended payment deadlines, reduced deposit ratios, and monthly settlement, based on years of good cooperation and credit performance.At FELIX GLASS, we strictly abide by international trade rules and payment terms, ensuring that all transactions are transparent, legal, and secure. We will provide a detailed payment schedule and terms in the proforma invoice, and our sales team will guide you through the entire payment process, answering any questions you may have. We are committed to building long-term, trust-based partnerships with our global customers, and our flexible payment terms are an important part of this commitment.

Question 8

We offer flexible MOQ and sample production for optical components with detailed quotations based on drawings and technical specifications.

Accepted Answer

A:We implement premium industrial-grade multi-layer packaging solutions for all precision optical glass components, including BK7 optical glass, fused silica windows, sapphire optical domes, AR/AG/AF coated display cover glass, and ZnSe/ZnS infrared optical parts. All packaging procedures adopt professional shock-resistant, anti-static, and dustproof materials exclusively customized for high-precision optical products. Each optical component is individually wrapped with anti-scratch protective film to isolate dust and friction, then fixed with high-density EVA shockproof lining to eliminate vibration displacement during transportation. For bulk orders and high-value optical components, we apply thick reinforced plywood wooden cases to achieve anti-collision, anti-pressure, and drop-resistant protection, effectively preventing edge chipping, surface scratches, coating damage, and static contamination. Our strict optical packaging standards far exceed ordinary industry packaging levels, ensuring zero damage rate for long-distance international transit. To accommodate diverse customer delivery requirements, we provide full-scene global shipping services covering international express, air freight, and sea freight logistics. Small-batch samples and urgent prototype orders can be delivered via fast international express. Medium-batch production orders support stable and efficient air freight with short lead time. For large-volume mass production orders, cost-effective sea freight solutions are available for global transportation. Our logistics coverage includes Europe, North America, Southeast Asia, Oceania, and other mainstream industrial regions, supporting door-to-door and port-to-port global delivery. In addition to safe packaging and flexible global shipping solutions, we provide complete one-stop export documentation support for all international clients. Our professional foreign trade team prepares full standard export documents, including commercial invoices, packing lists, certificates of origin, and customs clearance documents. Comprehensive document support helps overseas buyers complete customs clearance efficiently, avoid customs delays, and reduce additional import costs, delivering a reliable, worry-free, and professional purchasing experience for global optical component importers.

Question 9

We offer flexible MOQ and sample production for optical components with detailed quotations based on drawings and technical specifications.

Accepted Answer

A:We adopt flexible minimum order quantity tailored for custom optical components including BK7 glass, fused silica windows, sapphire domes, coated cover glass and ZnSe/ZnS infrared optics, with no rigid fixed MOQ restriction to satisfy customers’ different procurement phases. For standard in-stock optical parts, small-quantity trial orders are fully acceptable; for OEM & ODM customized optics requiring CNC machining, optical polishing and exclusive coating, we support low-volume pilot production according to project demands. Our complete sample service covers pre-production prototype samples for client performance verification before bulk manufacturing. Customers can order testing samples to inspect optical transmittance, surface coating quality, dimensional tolerance and real-environment compatibility for medical, aerospace, automotive, laser and machine vision applications. Sample cost varies based on material, coating craft and processing difficulty; once formal bulk order is placed later, we can deduct partial or full sample fees from the mass order payment per negotiation. We arrange fast sample production and flexible shipment via international courier to shorten customers’ project verification cycle. This customer-oriented MOQ and sample rule helps global buyers lower early-stage R&D investment risk and verify product performance conveniently before large-volume procurement.

Question 10

FELIX GLASS offers free samples for standard optical glass products. Custom samples are available with a small fee, refundable upon order confirmation. Samples are shipped within 3-5 days.

Accepted Answer

At FELIX GLASS, we know that the success rate of sample production is critical to your product development and mass production plans. A successful sample not only verifies product quality and performance but also lays the foundation for smooth mass production. Based on our years of experience in optical glass manufacturing, we have summarized the following key tips to help you increase the success rate of sample production, ensuring you get a sample that fully meets your requirements in one go. 1. Provide complete and accurate product specificationsThe most important factor in sample production success is clear, complete, and accurate product specifications. You should provide as much detailed information as possible, including:- Product type: optical dome, display glass, AR/AG/AF coated glass, tempered glass, etc.- Material requirements: BK7, fused silica, sapphire, borosilicate glass, etc.- Size, thickness, diameter, and tolerance requirements (critical for precision optical products)- Coating requirements: AR, AG, AF, anti-UV, conductive coating, etc., and transmittance/reflectance requirements- Processing requirements: drilling, etching, tempering, polishing, edge grinding, etc.- Application scenario: automotive, medical, industrial, consumer electronics, etc. (helps us optimize the product design) 2. Provide detailed drawings or 3D filesIf you have product drawings (2D CAD drawings, 3D STEP/IGS files), please attach them to your sample request. Drawings are the most direct and accurate way to convey product requirements, avoiding misunderstandings caused by text description. Our engineering team can directly use the drawings for sample production, ensuring 100% consistency with your requirements.3. Communicate your core requirements and tolerance range clearlyClearly inform us of your core functional requirements and acceptable tolerance range. For example, if you need an optical dome for a camera sensor, clearly inform us of the transmittance requirement, surface smoothness requirement, and impact resistance requirement. This helps our engineering team adjust the production process and material selection to meet your core needs, even if there are minor deviations in non-critical parameters. 4. Confirm the sample plan and quotation before productionBefore starting sample production, we will provide a detailed sample plan, including product design, production process, lead time, and cost. Please carefully confirm the plan, ask any questions you may have, and confirm all details before production. This avoids rework and delays caused by requirement deviations after production starts.5. Provide reference samples if possibleIf you have existing reference samples, please send them to us (or provide clear photos and test data). This allows us to directly compare and replicate the sample performance, ensuring the new sample meets your expectations. 6. Cooperate with our technical team for communicationOur engineering team will communicate with you during the sample production process, confirm any unclear requirements, and provide professional suggestions. Please respond to our communication in a timely manner, and work with us to optimize the product design, ensuring the sample meets your requirements.At FELIX GLASS, we have a professional sample production team and strict quality control process, ensuring high sample production success rates. We will provide sample photos, test data, and inspection reports before shipment, allowing you to confirm the sample quality before receiving it. We are committed to helping our customers achieve successful sample production and smooth mass production, supporting their product development and business growth.

Question 11

Optical manufacturing cost depends on material, precision, coating complexity, and order volume. Larger batches reduce unit cost significantly.

Accepted Answer

A:The manufacturing cost of custom precision optical components is determined by multiple professional industrial factors, including optical material grade, dimensional tolerance precision, surface polishing standard, optical coating process, order batch volume, and special customized processing requirements. Understanding these core pricing factors helps global buyers optimize design, control budget, and select the most cost-effective optical solutions for medical, automotive, aerospace, laser, and machine vision applications. First, optical raw material selection is the most fundamental factor affecting production cost. Standard optical substrates such as BK7 optical glass and common fused silica feature stable pricing and cost advantages for general visible and ultraviolet optical systems. In contrast, high-performance materials including high-purity fused silica, synthetic sapphire, ZnSe, and ZnS infrared crystalline materials require higher raw material investment due to their unique physical properties, extreme hardness, high-temperature resistance, and specialized infrared transmittance performance, significantly increasing overall manufacturing costs. Second, tolerance accuracy and surface quality standards directly determine processing difficulty and production expenses. Conventional loose-tolerance optical parts require only basic CNC machining and ordinary polishing procedures. However, ultra-precision optical components with strict dimensional tolerance, high flatness, parallelism, and low surface scratch grades demand repeated fine grinding, ultra-precision optical polishing, and full-item professional inspection. Higher precision standards extend production cycles, consume more equipment resources, and greatly improve manufacturing costs. Third, optical coating types and coating layers bring obvious price differences. Basic single-layer AR anti-reflection coating offers cost-effective performance for regular optical products. In comparison, multi-layer composite coatings such as AR+AG, AR+AF, and full AR+AG+AF coating, as well as customized high-transmission laser coating and infrared optical coating, require advanced vacuum coating equipment, strict environment control, and longer processing time, resulting in higher technical and production costs. Fourth, order quantity directly affects unit price. Large-batch mass production effectively averages fixed costs such as fixture setup, drawing DFM evaluation, and machine debugging, achieving lower unit manufacturing cost. Small-batch prototype orders and customized sample production retain relatively higher unit cost due to independent process setup and low material utilization rate. Additionally, special customized requirements including special edge chamfering, laser marking, ultra-clean cleaning, high-standard packaging, and strict quality testing reports will further optimize product performance while adding corresponding manufacturing costs.

Question 12

FELIX GLASS ensures stable glass gloss after assembly. Learn about our strict quality control, coating technology, and assembly process to maintain consistent gloss performance.

Accepted Answer

At FELIX GLASS, we strictly control the gloss consistency of our optical glass, display glass, and coated glass products, ensuring no significant gloss variation after assembly, even in complex application scenarios.1. Why Gloss Stability MattersGloss consistency is a critical performance indicator for glass products, especially in automotive displays, industrial screens, consumer electronics, and optical components. Uneven gloss after assembly can cause visual defects, reduced screen visibility, glare issues, and poor user experience, directly affecting product quality and customer satisfaction.2. Our Solutions to Prevent Gloss VariationWe implement a full-process quality control system to ensure gloss stability before and after assembly:- **Precision Coating Technology**: Our AG (Anti-Glare), AR (Anti-Reflective), and AF (Anti-Fingerprint) coatings are applied with uniform thickness and consistent gloss levels through advanced vacuum coating equipment. Each coating process is strictly monitored to ensure the gloss of the glass surface remains stable, with no color difference or gloss variation after assembly.- **Strict Material Selection**: We use high-quality raw glass materials with uniform surface properties, eliminating the risk of inherent gloss differences that could cause variation after assembly.- **Assembly Process Optimization**: We provide professional assembly guidance for our customers, including recommended bonding methods, frame design, and installation processes, to avoid stress concentration, friction, or contamination that could affect gloss during assembly.- **Pre-Assembly Testing**: Before delivery, we conduct pre-assembly simulation tests on all custom glass products to verify gloss consistency, ensuring that the gloss remains unchanged after actual assembly. 3. Post-Assembly Gloss Performance GuaranteeFor all FELIX GLASS products, we guarantee that the gloss will not vary significantly after assembly under normal use and standard assembly conditions:- **Long-Term Stability**: Our coated glass products maintain stable gloss performance for years, even in harsh environments such as high temperature, humidity, and UV exposure, with no fading or gloss variation.- **Customized Gloss Solutions**: We offer customized gloss levels according to customer requirements, from high-gloss to matte finishes, and ensure that the gloss remains consistent after assembly, meeting the specific needs of different application scenarios.- **Quality Assurance**: All our glass products undergo strict gloss testing before leaving the factory, including gloss meter measurement, visual inspection, and assembly simulation, to ensure 100% compliance with customer requirements.4. Professional Support for AssemblyOur technical team provides comprehensive assembly support to help customers avoid gloss variation issues:- We offer detailed assembly instructions and technical guidance for each product.- Our engineers can provide on-site or remote technical support to solve any assembly-related issues.- We provide after-sales warranty service, and if any gloss variation occurs due to product quality issues, we will provide free replacement or repair.At FELIX GLASS, we prioritize product quality and performance, ensuring that every glass product maintains stable gloss before and after assembly, providing reliable solutions for global customers in automotive, industrial, medical, and consumer electronics fields.

Question 13

FELIX GLASS ensures stable gloss after assembly. Advanced coating technology and strict QC maintain consistent gloss for AG/AR/AF glass products, with no significant variation post-installation.

Accepted Answer

At FELIX GLASS, we guarantee that the gloss of our optical glass, display glass panels, and AG/AR/AF coated glass products will remain stable and consistent after assembly. We understand that gloss variation after installation can cause visual defects, uneven brightness, and poor user experience, which is why we have implemented a comprehensive multi-stage quality control system. 1. Why Gloss Stability is CriticalGloss consistency is a key performance indicator for glass used in automotive smart cockpits, industrial HMI screens, medical devices, and consumer electronics. A significant gloss variation after assembly can lead to uneven light reflection, dark spots, or bright spots, directly affecting the visual quality and performance of the final product. 2. Our Technology to Prevent Gloss VariationTo ensure zero gloss variation after assembly, we utilize advanced manufacturing and coating technologies:- **Precision Coating Process**: Our AG (Anti-Glare), AR (Anti-Reflection), and AF (Anti-Fingerprint) coatings are applied using state-of-the-art vacuum coating equipment. The coating thickness and surface texture are controlled with micron-level precision, ensuring a uniform gloss across the entire glass surface.- **High-Precision Polishing**: Before coating, all glass surfaces undergo precision polishing using advanced CNC polishing machines. This eliminates surface defects and ensures a uniform base texture, which is the foundation for stable gloss.- **Uniform Material Properties**: We source high-quality raw glass materials with consistent surface properties. Defective or uneven raw materials are eliminated during the incoming inspection, preventing gloss issues at the source. 3. Strict Assembly Process ControlDuring the assembly process, we take specific measures to protect the gloss:- **Protective Handling**: We use specialized tools and fixtures to handle the glass, avoiding mechanical stress, scratches, or friction that could alter the surface gloss.- **Clean Environment**: All assembly operations are carried out in dust-free and humidity-controlled environments to prevent contamination that might affect the surface finish.- **Adhesive Selection**: We work with customers to recommend suitable bonding adhesives that are compatible with our glass surface, ensuring no chemical reaction or stress that could cause gloss changes. 4. Post-Assembly VerificationAfter assembly, we conduct rigorous verification to confirm gloss consistency:- **Visual Inspection**: Our QC team inspects the product for uniform gloss, no color difference, and no local bright or dark spots.- **Quantitative Measurement**: We use professional gloss meters to measure the gloss value (at 60° angle) of key areas. The post-assembly gloss value must match the pre-assembly standard within a tiny tolerance range.- **Long-Term Stability Test**: We conduct simulation tests under high temperature, high humidity, and UV irradiation to ensure the gloss does not decay or vary during long-term use. 5. Our CommitmentAt FELIX GLASS, we promise that under normal use and standard assembly conditions, the gloss of our products will not vary significantly. We provide a one-year warranty for all products. If any gloss variation issue occurs due to manufacturing defects, we will provide free replacement or repair.If you need a visual diagram of our gloss inspection process, please contact our sales team for detailed technical illustrations.

Question 14

Single side AG glass has coating on one side for basic anti-glare; double sided has coating on both sides for enhanced performance. FELIX GLASS offers both types for diverse display applications.

Accepted Answer

AG (Anti-Glare) glass is widely used in displays to reduce reflections, improve visibility, and enhance user experience. FELIX GLASS provides both single side AG glass and double sided AG glass to meet different application requirements. The following is a detailed comparison and introduction to their differences:### 1. Definition & Coating Structure- **Single Side AG Glass**: This type of glass has an Anti-Glare coating applied to only one surface. The other surface remains a smooth, untreated glass (or can be treated with AR/AF coatings). It is suitable for applications where the back surface does not require anti-glare treatment.- **Double Sided AG Glass**: This type has uniform Anti-Glare coatings applied to both the front and back surfaces. Both surfaces have a matte finish that scatters light, effectively reducing reflections from both sides.### 2. Core Performance Differences| Aspect | Single Side AG Glass | Double Sided AG Glass || :--- | :--- | :--- || **Reflection Control** | Reduces reflections on the coated side only. | Reduces reflections on both sides, offering comprehensive anti-glare protection. || **Light Transmittance** | Slightly higher transmittance as only one side is treated. | Slightly lower transmittance compared to single side due to double-sided light scattering, but still within high performance standards. || **Application Scope** | Standard displays, backboards, or cases where only one side is visible. | Transparent displays, laminated screens, or applications where both sides may be exposed to light. || **Cost** | Relatively lower cost due to single-side processing. | Higher cost due to double-side processing and higher material consumption. |### 3. Application Scenarios- **Single Side AG Glass**: Ideal for most consumer electronics displays (such as monitors, TVs, and mobile phones) where the back of the screen is enclosed and not visible to the user. It is also used for decorative glass panels and touch sensors.- **Double Sided AG Glass**: Preferred for automotive displays (like head-up displays and rear-seat entertainment systems), medical devices, and industrial control panels. These scenarios require the display to be visible from multiple angles or both sides, making double-sided anti-glare essential.### 4. Processing & Durability- **Single Side AG**: The processing is simpler, with faster production lead times (typically 3-7 days). It is durable against scratches on the uncoated side if handled properly.- **Double Sided AG**: The processing is more complex, requiring precise alignment of both surfaces. It offers superior durability as both surfaces are protected, making it more resistant to wear and tear.### 5. FELIX GLASS CustomizationAt FELIX GLASS, we can customize both single and double sided AG glass to meet your exact specifications:- **Coating Thickness**: Adjust the roughness to achieve different haze levels (10%-30%).- **Material Options**: Available in BK7, K9, Sapphire, or high-quality float glass.- **Combination Coatings**: We can combine AG with AR (Anti-Reflection) or AF (Anti-Fingerprint) coatings on either or both sides for a comprehensive solution.If you need a diagram comparing single and double sided AG glass structures, please contact our technical team for support.

Question 15

FELIX GLASS offers high-precision processing capability for optical glass. Equipped with advanced CNC and coating equipment, we handle diameters 5-300mm, tight tolerances ±0.01mm,

Accepted Answer

AG (Anti-Glare) glass is widely used in displays to reduce reflections, improve visibility, and enhance user experience. FELIX GLASS provides both single side AG glass and double sided AG glass to meet different application requirements. The following is a detailed comparison and introduction to their differences:### 1. Definition & Coating Structure- **Single Side AG Glass**: This type of glass has an Anti-Glare coating applied to only one surface. The other surface remains a smooth, untreated glass (or can be treated with AR/AF coatings). It is suitable for applications where the back surface does not require anti-glare treatment.- **Double Sided AG Glass**: This type has uniform Anti-Glare coatings applied to both the front and back surfaces. Both surfaces have a matte finish that scatters light, effectively reducing reflections from both sides.### 2. Core Performance Differences| Aspect | Single Side AG Glass | Double Sided AG Glass || :--- | :--- | :--- || **Reflection Control** | Reduces reflections on the coated side only. | Reduces reflections on both sides, offering comprehensive anti-glare protection. || **Light Transmittance** | Slightly higher transmittance as only one side is treated. | Slightly lower transmittance compared to single side due to double-sided light scattering, but still within high performance standards. || **Application Scope** | Standard displays, backboards, or cases where only one side is visible. | Transparent displays, laminated screens, or applications where both sides may be exposed to light. || **Cost** | Relatively lower cost due to single-side processing. | Higher cost due to double-side processing and higher material consumption. |### 3. Application Scenarios- **Single Side AG Glass**: Ideal for most consumer electronics displays (such as monitors, TVs, and mobile phones) where the back of the screen is enclosed and not visible to the user. It is also used for decorative glass panels and touch sensors.- **Double Sided AG Glass**: Preferred for automotive displays (like head-up displays and rear-seat entertainment systems), medical devices, and industrial control panels. These scenarios require the display to be visible from multiple angles or both sides, making double-sided anti-glare essential.### 4. Processing & Durability- **Single Side AG**: The processing is simpler, with faster production lead times (typically 3-7 days). It is durable against scratches on the uncoated side if handled properly.- **Double Sided AG**: The processing is more complex, requiring precise alignment of both surfaces. It offers superior durability as both surfaces are protected, making it more resistant to wear and tear.### 5. FELIX GLASS CustomizationAt FELIX GLASS, we can customize both single and double sided AG glass to meet your exact specifications:- **Coating Thickness**: Adjust the roughness to achieve different haze levels (10%-30%).- **Material Options**: Available in BK7, K9, Sapphire, or high-quality float glass.- **Combination Coatings**: We can combine AG with AR (Anti-Reflection) or AF (Anti-Fingerprint) coatings on either or both sides for a comprehensive solution.If you need a diagram comparing single and double sided AG glass structures, please contact our technical team for support.

Question 16

FELIX GLASS offers high-precision processing capability for optical glass.  we handle diameters 5-300mm, tight tolerances ±0.01mm, and support custom complex shapes.

Accepted Answer

FELIX GLASS is committed to providing world-class precision processing capabilities for optical glass, optical components, and display glass products. Our processing strength lies in our advanced equipment, professional technical team, and strict quality management system. The following is a detailed introduction to our overall processing capability: 1. Processing Range & ParametersWe have a wide processing range to meet diverse customer needs:- **Size Range**: We can process glass with diameters ranging from **5mm to 300mm** and thicknesses from **0.3mm to 20mm**.- **Shape Capability**: We support standard shapes (round, square, rectangle) as well as custom special shapes (irregular curves, arcs, domes, etc.).- **Tolerance Control**: We maintain an ultra-high precision tolerance of **±0.01mm** for dimensional requirements, ensuring consistency in mass production.- **Surface Quality**: The surface roughness (Ra) can reach ** 2. Core Processing EquipmentOur processing capability is supported by a full set of high-end equipment:- **Precision CNC Processing Centers**: Imported from leading manufacturers, these machines enable high-precision cutting, drilling, and grinding of glass materials. They ensure stability and accuracy even for complex custom orders.- **High-Precision Polishing Machines**: We use computer-controlled polishing (CCP) technology to achieve ultra-smooth surfaces, which is crucial for optical performance.- **Advanced Vacuum Coating Machines**: Our coating equipment allows for the application of AR, AG, AF, and HR coatings with precise thickness control (±1nm), ensuring consistent performance. 3. Process CapabilityWe are capable of handling a complete processing chain:- **Raw Material Incoming**: Strict inspection of raw glass to ensure internal quality and stability.- **Precision Machining**: Cutting, slicing, drilling, and edge processing with minimal stress and deformation.- **Surface Finishing**: Precision polishing, grinding, and lapping to achieve the required surface finish.- **Surface Coating**: Multi-layer coating technology to enhance optical properties.- **Final Inspection**: 100% inspection using precision measuring instruments (like laser scopes and interferometers). 4. Complex Custom Order ProcessingWe have strong expertise in processing complex optical components:- **Optical Domes**: Process BK7/K9/Sapphire domes with high precision for automotive and sensor applications.- **Curved Glass**: Process bent/curved glass for automotive displays and industrial screens with consistent curvature.- **Special Optical Lenses**: Custom plano-convex, plano-concave, and aspheric lenses for thermal imaging and CO2 lasers. 5. Capacity & Lead Time- **Monthly Processing Capacity**: We can process over 50,000 pieces of standard optical glass and 10,000 pieces of complex custom components monthly.- **Lead Time**: Standard orders take 3-7 days, while complex custom orders take 7-15 days. For urgent orders, we offer expedited processing services.At FELIX GLASS, we continuously invest in technology and equipment to improve our processing capability. We aim to provide reliable, high-precision processing services to support your high-end projects. If you need a flow chart of our processing workflow, please contact our sales team.

Question 17

FELIX GLASS offers flexible MOQ for optical glass products. Standard items have low MOQ, custom orders support small batches, with sample orders available for quality verification.

Accepted Answer

At FELIX GLASS, we understand that different customers have diverse order requirements, from small-batch prototype projects to large-scale mass production. Therefore, we have formulated a flexible and customer-friendly Minimum Order Quantity (MOQ) policy to meet the needs of global buyers at different stages.### 1. MOQ for Standard Optical Glass ProductsFor our standard optical glass products, including standard BK7/K9 optical domes, common display glass panels, and regular AG/AR/AF coated glass, we set a very low MOQ to support small and medium-sized buyers and start-up projects. The standard MOQ is **10 pieces**, which allows customers to place small orders for testing, prototype development, or small-batch production without the pressure of large minimum purchases. We also support sample orders (1-5 pieces) for quality verification before formal orders, helping customers confirm product performance and suitability.### 2. MOQ for Custom Optical Glass ProductsFor custom optical glass products that require special processing, such as custom-sized curved glass, special-shaped optical components, Sapphire domes, and multi-layer composite coated glass, the MOQ is adjusted according to the complexity of the product and the processing process. Generally, the MOQ for custom products is **50 pieces**, but we also support flexible MOQ adjustments for long-term cooperative customers and urgent projects. For complex custom projects with high processing difficulty, our engineering team will evaluate the production cost and process flow, and provide a reasonable MOQ plan that balances production efficiency and customer needs.### 3. MOQ for Bulk Orders and Long-Term CooperationFor large-scale bulk orders and long-term cooperative customers, we can further reduce the MOQ appropriately and provide more preferential unit prices. We have a complete production line and sufficient production capacity, which can meet the order demand of tens of thousands of pieces per month, ensuring stable supply and on-time delivery for large customers. At the same time, we provide exclusive account managers for long-term cooperative customers to track orders throughout the process and provide personalized order solutions.### 4. Our MOQ Policy Advantages- **Flexible Adjustment**: We adjust the MOQ according to the customer's actual order needs, product complexity, and cooperation cycle, avoiding rigid MOQ restrictions that hinder customer project development.- **Sample Support**: We provide sample services for all products, allowing customers to verify product quality before placing formal orders, reducing procurement risks.- **Cost-Effective**: While maintaining a low MOQ, we ensure product quality and production efficiency, providing customers with cost-effective optical glass solutions.- **On-Time Delivery**: We have a strict production scheduling system to ensure that orders of different MOQs are delivered on time, supporting the smooth progress of customer projects.### 5. How to Get the Best MOQ SolutionIf you have special MOQ requirements, you can contact our sales team with your product specifications, order quantity, and project needs. Our team will evaluate the feasibility of the order, provide a personalized MOQ plan and quotation, and help you find the most suitable order solution. Whether you need a small batch of custom optical components or a large-scale order of display glass, FELIX GLASS can meet your needs with a flexible MOQ policy and reliable production capacity.

Question 18

All optical components undergo strict quality control including dimensional inspection, coating testing, and material verification with certification reports.

Accepted Answer

A:We build a full-process closed-loop quality control system covering raw material incoming inspection, in-process production monitoring, finished-product testing and pre-shipment recheck to guarantee consistent quality for BK7, fused silica, sapphire, ZnSe, ZnS, AR/AG/AF coated display cover glass and all custom precision optical components, complying with international industrial optical inspection standards for aerospace, medical, automotive sensor, laser and machine vision industries. Before production, our QC team strictly audits incoming optical blank materials by checking internal bubble, impurity, raw material spectral transmittance and material uniformity, eliminating defective substrates to avoid hidden quality risks from the source. During production, every core working procedure including CNC machining, fine grinding, ultra-precision optical polishing and vacuum optical coating is tracked with real-time process inspection. Technicians spot-check dimensional tolerance, edge integrity and surface finish after each working step, timely correcting abnormal processing parameters to prevent batch defective goods. After finishing polishing and functional coating, finished optical glass undergoes comprehensive laboratory testing with professional optical testing equipment. Key inspected items include surface scratch grade, flatness, parallelism, spectral transmittance, coating adhesion and anti-fingerprint performance for AF-coated products. High-spec parts for aerospace and infrared systems will receive extra environmental reliability tests such as temperature shock and humidity resistance to verify long-term stability under harsh working conditions. Prior to packaging and global shipment, our final QC re-inspects appearance and specification one by one again. Any unqualified optical glass will be separated and reworked instead of being delivered. Our systematic multi-stage quality management effectively stabilizes product yield, minimizes defect rate and delivers reliable certified optical glass to worldwide OEM and ODM purchasers.

Question 19

Yes, FELIX GLASS supports printing on AG glass, including screen printing, digital printing, and ceramic printing, with durable ink and custom designs for display and industrial applications.

Accepted Answer

No matter it’s single side AG glass or double sided AG glass, both can be silkscreen printed. it is absolutely possible to print on the side (edge) or surface of AG (Anti-Glare) glass, and FELIX GLASS has rich professional experience and mature technology in this field, providing customers with high-quality custom printed AG glass solutions for various application scenarios.### 1. Feasibility of Printing on AG GlassAG glass has a micro-rough anti-glare surface formed by physical or chemical etching, which is different from the smooth surface of ordinary glass. This micro-rough structure can increase the adhesion of ink, making printing more firm and durable, and not easy to fall off. At the same time, we can choose to print on the edge (side) of the glass or the non-AG surface of the glass according to customer needs, avoiding affecting the anti-glare effect of the AG surface. For edge printing, we use professional edge grinding and pretreatment technology to ensure the flatness of the edge, providing a good printing base.### 2. Printing Technologies Supported by FELIX GLASSWe provide a variety of mature printing technologies to meet different customer needs:- **Screen Printing**: The most commonly used printing technology for AG glass, suitable for mass production of logos, patterns, text, and decorative lines. It has the advantages of high ink adhesion, bright colors, and low cost, and is widely used in automotive displays, industrial control screens, and consumer electronics.- **Digital Printing (UV Printing)**: Suitable for custom personalized patterns, full-color images, and small-batch orders. It can print high-resolution, complex patterns directly on AG glass, with fast proofing speed and flexible customization, meeting the personalized design needs of customers.- **Ceramic Ink Printing**: Use high-temperature ceramic ink for printing, which is fired at high temperature after printing, with extremely high adhesion and durability. It can withstand high temperature, scratch, and chemical corrosion, suitable for automotive glass, architectural glass, and other products with high durability requirements.- **Edge Printing Technology**: Specialized printing technology for the side (edge) of glass, which can print logos, model numbers, barcodes, and decorative patterns on the edge of AG glass, used for product identification and appearance decoration, without affecting the use of the glass surface.### 3. Printing Process and Quality ControlTo ensure the printing quality of AG glass, we have a strict printing process flow:- **Pre-Printing Pretreatment**: Clean and activate the glass surface/edge to remove oil, dust, and impurities, increasing ink adhesion.- **Ink Selection**: Use professional glass-specific ink, which has good adhesion, light resistance, and weather resistance, ensuring that the printed pattern does not fade or fall off for a long time.- **Printing Process Control**: Use imported printing equipment to control the printing accuracy and ink thickness, ensuring clear patterns and consistent color.- **Post-Printing Treatment**: Conduct curing, baking, or coating protection treatment according to the printing technology, further improving the durability of the printed pattern.- **Printing Quality Inspection**: Conduct 100% inspection of the printed product, including pattern clarity, color accuracy, adhesion, and scratch resistance, ensuring that the printing quality meets customer requirements.### 4. Application Scenarios of Printed AG GlassPrinted AG glass is widely used in various fields:- **Automotive Displays**: Print logos, decorative lines, and function prompts on the edge of automotive central control displays and instrument screens, enhancing the interior design sense.- **Industrial Control Screens**: Print operation prompts, model numbers, and safety warnings on the edge of industrial control screens, facilitating operation and identification.- **Consumer Electronics**: Print brand logos and decorative patterns on the edge of mobile phones, tablets, and other electronic devices, improving product recognition.- **Architectural and Decorative Glass**: Print patterns and designs on the edge of architectural AG glass, used for partitions, doors and windows, and decorative panels.### 5. Custom Printing ServicesFELIX GLASS provides fully customized printing services for AG glass. Customers can provide design drawings, pattern requirements, and printing position requirements, and our technical team will conduct printing feasibility assessment, provide proofing services, and mass-produce after customer confirmation. We support custom printing of various sizes, shapes, and patterns, meeting the differentiated needs of different customers.Whether you need to print simple logos on the edge of AG glass or complex full-color patterns on the surface, FELIX GLASS can provide you with high-quality, durable custom printed AG glass solutions, helping you enhance product appearance and added value.

Question 20

The unit of haze is percentage (%), which measures the light scattering degree of glass. FELIX GLASS controls AG glass haze from 5% to 30% to meet different display application requirements.

Accepted Answer

Haze is a core optical performance indicator for glass, especially AG (Anti-Glare) glass, and its unit is **percentage (%)**. It is used to quantify the degree of light scattering when light passes through the glass, which directly affects the anti-glare effect, clarity, and visual experience of the glass.### 1. Definition and Unit of HazeHaze, also known as turbidity, is defined as the percentage of the transmitted light that deviates from the incident direction by more than 2.5° when parallel light passes through the glass, relative to the total transmitted light. The calculation formula is:**Haze (%) = (Scattered Transmitted Light / Total Transmitted Light) × 100%**The unit of haze is percentage (%), which is a dimensionless percentage value, used to intuitively reflect the light scattering ability of the glass. The higher the haze value, the stronger the light scattering ability of the glass, the better the anti-glare effect, but the slightly lower the clarity; the lower the haze value, the weaker the light scattering, the clearer the glass, but the slightly worse the anti-glare effect.### 2. Measurement Standard and Method of HazeThe measurement of haze is carried out in strict accordance with international standards, such as **ASTM D1003** and **ISO 14782**. We use professional haze meters (also called transparency and haze meters) for measurement. The measurement process is as follows:- **Instrument Calibration**: Calibrate the haze meter with a standard sample before measurement to ensure measurement accuracy.- **Sample Preparation**: Clean the glass sample to be tested to ensure no dust, oil, or scratches on the surface, avoiding affecting the measurement results.- **Measurement**: Place the sample in the haze meter, emit parallel light to pass through the sample, and the instrument automatically measures the total transmitted light and scattered transmitted light, and calculates the haze value.- **Multiple Measurements**: Conduct multiple measurements on different positions of the sample to ensure the uniformity of the haze value of the glass.### 3. Haze Range of AG Glass and Application ScenariosFELIX GLASS can customize the haze value of AG glass according to customer needs, and the common haze range is **5% to 30%**, which is suitable for different application scenarios:- **Low Haze (5%-10%)**: High clarity, slightly weaker anti-glare effect, suitable for indoor high-end displays, VR/AR headsets, and medical devices that require high visual clarity.- **Medium Haze (10%-20%)**: Balance between anti-glare effect and clarity, the most commonly used haze range, suitable for automotive displays, industrial control screens, and consumer electronics touch screens.- **High Haze (20%-30%)**: Strong anti-glare effect, slightly lower clarity, suitable for outdoor displays, public kiosks, and bright environments that require strong anti-glare.### 4. FELIX GLASS's Haze Control TechnologyWe have advanced AG coating and etching technology, which can precisely control the haze value of AG glass, ensuring the uniformity and stability of the haze value of the same batch of products:- **Precision Etching Technology**: Control the micro-roughness of the glass surface by adjusting the etching process parameters, so as to accurately control the haze value, with a control accuracy of ±1%.- **Uniform Coating Technology**: Use vacuum coating technology to form a uniform anti-glare coating on the glass surface, ensuring that the haze value of each position of the glass is consistent, with no local difference.- **Haze Quality Inspection**: Conduct 100% haze inspection on each AG glass product to ensure that the haze value meets the customer's specified range, and provide a detailed haze test report.### 5. Factors Affecting Haze ValueThe haze value of glass is mainly affected by the following factors:- **Surface Roughness**: The higher the surface roughness of AG glass, the higher the haze value.- **Coating Thickness and Uniformity**: The thickness and uniformity of the AG coating directly affect the haze value.- **Glass Thickness**: The thicker the glass, the slightly higher the haze value, but the impact is small.- **Measurement Environment**: The temperature, humidity, and light environment during measurement will affect the measurement results, so we carry out measurement in a standard laboratory environment.### 6. How to Choose the Right Haze ValueWhen choosing the haze value of AG glass, you need to comprehensively consider the application scenario, use environment, and visual requirements:- **Outdoor Use**: Choose high haze (20%-30%) to resist strong sunlight reflection.- **Indoor High-End Use**: Choose low haze (5%-10%) to pursue high clarity.- **General Touch Screen Use**: Choose medium haze (10%-20%) to balance anti-glare and clarity.FELIX GLASS's professional technical team can provide you with professional haze value selection suggestions according to your product application scenarios and requirements, and customize AG glass products with the most suitable haze value to meet your visual and performance needs.

Question 21

custom Gorilla Glass with flexible specifications, including thickness 0.3-6mm,  and custom sizes/shapes, ideal for displays, industrial equipment and consumer electronics.

Accepted Answer

Gorilla Glass, a chemically strengthened aluminosilicate glass, is renowned for its exceptional impact resistance, scratch hardness, and durability, making it a top choice for displays, industrial equipment, and consumer electronics. FELIX GLASS provides fully custom Gorilla Glass solutions with flexible specifications tailored to customer needs. 1. Core Material and Strengthening Technology Our custom Gorilla Glass is made of high-purity aluminosilicate glass, processed through a proprietary ion-exchange chemical strengthening process. During this process, the glass is immersed in a molten salt bath at high temperature, where larger potassium ions replace smaller sodium ions in the glass surface, creating a high-compression stress layer on the surface. This compression layer significantly improves the glass's impact resistance, scratch hardness, and bending strength, making it 5-10 times stronger than ordinary soda-lime glass. 2. Key Specification Parameters We support a wide range of custom specifications to meet diverse application requirements: - Thickness Range: 0.3mm to 6.0mm, with ultra-thin options (0.3-1.0mm) for portable electronics and thick options (3-6mm) for industrial equipment and architectural applications.- Size and Shape: Custom sizes from 5mm to 1500mm, supporting standard shapes (round, square, rectangle) and complex special shapes (curved, irregular, drilled, notched) according to customer drawings.- Compression Stress and Depth of Layer (DOL): Standard compression stress ≥ 800MPa, DOL ≥ 40μm; for high-demand applications, we can achieve compression stress ≥ 1000MPa and DOL ≥ 100μm, further enhancing strength.- Optical Performance: High visible light transmittance ≥ 90%, low haze ≤ 1%, with optional AG/AR/AF coatings to enhance anti-glare, anti-reflection, and anti-fingerprint performance.- Edge Processing: Custom edge grinding, chamfering, and polishing, with edge strength optimized to avoid breakage during assembly and use. 3. Performance Advantages - Ultra-High Impact Resistance: Can withstand drops from 1.5-2 meters without cracking, far exceeding ordinary glass, making it ideal for mobile devices, tablets, and industrial touch screens.- Excellent Scratch Hardness: Surface hardness reaches 9H (Mohs scale), resisting daily scratches from keys, sand, and other objects, maintaining long-term surface clarity.- High Bending Strength: Suitable for curved glass forming, supporting hot-bending and cold-bending processes for automotive displays and foldable devices.- Thermal Stability: Can withstand temperature changes from -40°C to 120°C, suitable for outdoor and high-temperature industrial environments. 4. Custom Processing and Coating Services In addition to basic specifications, we provide a full range of deep processing and coating services for custom Gorilla Glass: - Coating Options: AG (Anti-Glare), AR (Anti-Reflective), AF (Anti-Fingerprint), UV-resistant, and anti-corrosion coatings, with composite coating solutions for specific applications.- Printing Services: Screen printing, digital printing, and ceramic ink printing for logos, patterns, and decorative lines on the glass surface or edge.- Strengthening Optimization: Custom ion-exchange parameters to adjust compression stress and DOL according to customer performance requirements.- Quality Inspection: 100% full inspection of strength, size, optical performance, and surface quality, with detailed inspection reports provided. 5. Application Scenarios Our custom Gorilla Glass is widely used in: - Consumer Electronics: Mobile phone screens, tablet displays, smart watches, and foldable devices.- Automotive: Central control displays, instrument screens, head-up displays, and exterior sensor covers.- Industrial: Industrial control panels, touch screens, and equipment protective covers.- Medical: Medical device displays and surgical equipment protective glass. FELIX GLASS has rich experience in custom Gorilla Glass processing, supporting small-batch prototype and large-scale mass production, with short lead times and stable quality. We provide personalized solutions according to customer application scenarios and performance requirements, helping customers create high-performance, durable glass products.

Question 22

fast delivery for custom cover glass: standard orders take 7-15 days, complex custom orders take 15-30 days, with expedited services available for urgent projects to meet customer timelines.

Accepted Answer

Delivery time is a critical factor for customers when ordering custom cover glass, and FELIX GLASS has established a flexible, efficient production and delivery system to meet diverse customer needs, from urgent prototype projects to large-scale mass production. 1. Standard Delivery Time for Custom Cover Glass We divide delivery time into different levels based on product complexity, processing requirements, and order quantity: - Standard Custom Cover Glass (Simple Processing): For standard sizes, common thicknesses, and basic processing (cutting, edge grinding, simple coating), the standard delivery time is 7-15 working days after order confirmation and sample approval. This includes most display cover glass, touch screen glass, and simple custom components.- Complex Custom Cover Glass (High-Precision/ Special Processing): For complex shapes, ultra-thin thickness, curved forming, multi-layer composite coating, or special material requirements (such as Gorilla Glass, Sapphire), the delivery time is 15-30 working days. This is due to additional processing steps, precision control, and quality inspection required for complex products.- Sample Orders: For prototype and sample orders (1-10 pieces), the delivery time is 5-10 working days, allowing customers to quickly verify product performance and design.- Large-Scale Mass Production Orders: For orders exceeding 10,000 pieces, we arrange dedicated production lines, with delivery time calculated based on order quantity, generally 20-45 working days, ensuring stable supply and on-time delivery. 2. Expedited Delivery Service for Urgent Projects We understand that some customers have urgent project timelines, so we provide a dedicated expedited delivery service: - Expedited Standard Orders: Can shorten delivery time to 3-7 working days by prioritizing production, arranging overtime processing, and optimizing the production schedule.- Expedited Complex Orders: Can shorten delivery time to 7-15 working days for complex custom products, with additional engineering support to ensure quality while accelerating production.- Emergency Sample Service: For urgent prototype needs, we can deliver samples within 2-3 working days (subject to product complexity and material availability). 3. Factors Affecting Delivery Time Several factors may affect the delivery time of custom cover glass, and we will communicate these clearly with customers before order confirmation: - Product Complexity: Complex shapes, special processing, and high-precision requirements require longer production and inspection time.- Order Quantity: Large orders require longer production cycles, while small orders can be processed faster.- Material Availability: Special materials (such as ultra-thin Gorilla Glass, Sapphire) may require additional procurement time.- Coating and Processing Requirements: Multi-layer composite coatings, special printing, and strengthening processes add production steps.- Quality Inspection: Strict full inspection ensures product quality, which may take additional time for high-precision products. 4. Our Delivery Guarantee and Process Control To ensure on-time delivery, we implement a strict production scheduling and tracking system: - Order Confirmation and Planning: After order confirmation, we immediately arrange production planning, assign dedicated production lines, and confirm the delivery timeline with the customer.- Real-Time Production Tracking: Customers can track the production progress at any time, with regular updates on order status.- Quality Control at Each Stage: Conduct quality inspection after each processing link to avoid rework and delays caused by quality problems.- Logistics and Shipping: We cooperate with international logistics providers to provide fast, safe shipping options, including air freight, sea freight, and express delivery, with tracking numbers provided for each shipment. 5. After-Sales Support for Delivery If there is a delay in delivery due to our reasons, we will communicate with the customer in advance, provide a solution, and offer appropriate compensation. We also provide after-sales support for delivered products, including quality assurance, technical support,

Question 23

A: Recognize etched side by light reflection: Etched = scattered light; Non-etched = clear mirror reflection. Most direct & effective method.

Accepted Answer

Question: How to recognize the etched side?Answer:Recognizing the etched (AG/anti-glare) side of optical glass is crucial for quality control and application matching. Here are 3 practical and high-precision methods: 1. Visual Light Reflection Test (Most Used)Place the glass under natural light or fluorescent lamps. Observe the light reflection on both sides: the etched side will produce diffuse reflection, with blurred and scattered light (matte, non-glare effect); the non-etched side will form a clear, mirror-like specular reflection of the light source. This method is the most convenient and widely used in on-site inspection, with 100% accuracy for standard AG glass.2. Tactile Touch TestGently slide your finger across the glass surface. The etched side has a matte, slightly rough texture (smooth and non-sticky hand feeling), while the non-etched side is smooth and flat. Note: This method is not suitable for AF-coated glass, as the AF layer will change the surface touch feeling.3. Backlighting Transparency TestHold the glass up to a strong light source and observe from the opposite side. The etched side shows a frosted, semi-opaque matte effect, while the non-etched side is fully transparent. This method is especially effective for high-haze AG glass, making it easy to distinguish even for thick glass. In summary, the visual light reflection test is the first choice for quick identification, and it can be combined with the tactile test for double verification. Our AG optical glass undergoes strict process control, ensuring clear distinction between etched and non-etched sides and stable product performance.

Question 24

A: Qualified AF coating: initial water contact angle ≥105°, premium ≥110°-115° for better anti-fingerprint performance.

Accepted Answer

Question: For AF(Anti-Fingerprint) coating, how much is the qualified water contact angle?Answer:AF (Anti-Fingerprint) coating, also known as oleophobic coating, is a high-performance functional coating based on perfluoropolyether materials, which is widely used on optical glass, display panels, touch screens and other optical components. Its core function is to endow the glass surface with excellent hydrophobic and oleophobic properties, effectively reducing the adhesion of fingerprints, oil stains and water stains, and achieving an easy-to-clean effect. The water contact angle (WCA) is the most core and authoritative quantitative index to evaluate the performance and qualification of AF coating, and its industry standards and testing principles are clearly defined as follows: 1. Industry Qualification Standards for Water Contact Angle The water contact angle refers to the angle between the tangent of a static water drop and the glass surface, which directly reflects the surface energy of the coating: the larger the angle, the lower the surface energy, and the better the hydrophobic and anti-fingerprint performance. The industry's unified qualification standards are divided into three levels: - Basic Qualified Standard (Entry Level): For general consumer electronics, daily display glass and other conventional applications, the initial water contact angle of qualified AF coating must be ≥ 105°. This is the minimum threshold to ensure basic anti-fingerprint and easy-to-clean performance, which can effectively reduce the adhesion of daily fingerprints and oil stains, and is the most widely used standard in the market.- High-Quality Standard (Mid-to-High End): For automotive displays, industrial touch screens, outdoor display screens and other medium and high-end application scenarios with high durability requirements, the qualified standard is ≥ 110°. This level of coating has lower surface energy, better hydrophobic and oleophobic effects, and can maintain stable performance in complex environments such as high temperature and high humidity.- Premium Flagship Standard (Top Level): For high-end smart phones, professional optical instruments, medical display glass and other top-level products, the strictest requirement is ≥ 115°. This level of AF coating has ultra-low surface energy, excellent anti-fouling performance, and can achieve a "water drop rolling without leaving a trace" effect, which is the highest standard in the industry. 2. Performance Grading and Unqualified Judgment To help customers intuitively judge the quality of AF coating, we have formulated a clear performance grading standard based on water contact angle: - WCA - 90° - 105° ≤ WCA - 110° ≤ WCA - WCA ≥ 115°: Premium flagship grade, with ultra-high performance, suitable for high-end optical products and professional instruments. 3. Testing Principle and Additional Durability Requirements The water contact angle is tested by the static sessile drop method, which is the international standard testing method: 1. Drop 2-5μL of pure water on the surface of the AF coating to be tested, keep the glass horizontal and static.2. Use a professional contact angle measuring instrument to capture the shape of the water drop, and measure the angle between the tangent of the water drop and the glass surface, which is the water contact angle value. In addition to the initial water contact angle, a truly qualified AF coating must also pass the friction resistance durability test, which is an important indicator to distinguish low-quality and high-quality coatings: - After 3000 times of standard steel wool friction (load 1kg), the water contact angle of qualified coating should still be ≥ 100°, ensuring long-term use without performance degradation.- For high-end automotive and industrial grade coatings, it is required to maintain a water contact angle ≥ 105° after 5000-8000 times of friction, with extremely high durability. 4. Our Product Advantages As a professional optical glass manufacturer, our AF coating products strictly follow the highest industry standards: - All products have an initial water contact angle of ≥ 110°, and the flagship series reaches ≥ 115°, far exceeding the basic qualification requirements.- All coatings pass the 5000 times steel wool friction test, and the water contact angle remains stable, ensuring long-term service life.- We support customized coating solutions for different application scenarios, providing professional test reports and quality certificates for each batch of products.

Question 25

A: Proper AG etching won't affect glass strength. Strict process control ensures stable mechanical performance for display and industrial use.

Accepted Answer

Question: Will the glass strength be affected after AG etching?Answer:AG (Anti-Glare) etching is a core surface treatment process for optical glass, which forms a uniform micro-rough structure on the glass surface through chemical etching, effectively reducing specular reflection and glare, and is widely used in display panels, touch screens, automotive displays, industrial equipment and other fields. A common concern from customers is whether AG etching will damage the mechanical strength of the glass. The clear conclusion is: with professional, strictly controlled AG etching process, the glass strength will not be negatively affected, and can even maintain or exceed the mechanical performance of the original glass. 1. Mechanism Analysis: Why AG Etching Won't Weaken Glass Strength Many customers mistakenly believe that "etching removes glass material, so it will reduce strength", but this is a misunderstanding caused by ignoring the process principle. The core reasons why professional AG etching will not affect glass strength are as follows: - Minimal Material Removal: The AG etching process only removes a very thin layer of glass surface, usually only 5-20μm, which is less than 1/50 of the total thickness of conventional display glass (0.5mm-1.1mm). This extremely small material removal has a negligible impact on the overall mechanical load-bearing capacity of the glass.- No Harmful Micro-Cracks Introduced: The key to glass strength lies in whether there are sharp micro-cracks on the surface, which are the source of stress concentration and fracture. Professional chemical AG etching uses strictly controlled acid concentration, temperature, time and stirring speed, which can form a uniform, stress-free micro-pit structure on the glass surface, avoiding the generation of sharp micro-cracks, and will not become a hidden danger of strength failure.- No Damage to Strengthened Layer: For chemically strengthened glass (such as Gorilla Glass, aluminosilicate glass) commonly used in high-end displays, the AG etching process only acts on the outermost surface of the glass, and will not damage the internal ion exchange stress layer, so the glass can still maintain the high strength brought by the strengthening process. 2. Process Control: The Core Guarantee of Glass Strength To ensure that AG etching does not affect glass strength, strict process control in all links is essential: - Single-Sided Etching Protection: Use high-temperature resistant protective film to protect the non-etched side of the glass during the etching process, avoiding acid corrosion and damage to the opposite side, ensuring the integrity of the glass structure.- Precise Etching Parameter Control: Strictly control the concentration of hydrofluoric acid, etching temperature, time and other parameters, avoid over-etching, and ensure that the surface microstructure is uniform and free of defects.- Post-Etching Stress Relief Treatment: After etching, the glass undergoes edge polishing, cleaning and stress relief annealing treatment, eliminating the edge stress concentration caused by cutting and etching, further improving the overall strength of the glass.- Strict Quality Inspection: Each batch of AG glass undergoes 100% appearance inspection and mechanical performance sampling inspection, including flexural strength test, impact test, drop test, etc., to ensure that the strength meets the industry standards and customer requirements. 3. Performance Data and Application Verification A large number of industry tests and practical applications have fully verified that professional AG etching will not reduce glass strength: - Flexural Strength Test: The flexural strength of AG etched glass is basically the same as that of the original glass, and even slightly improved in some cases, because the uniform micro-rough structure can disperse the surface stress.- Impact and Drop Test: AG glass has been widely used in automotive displays, industrial touch screens, outdoor display screens and other harsh environment applications, and can pass the strict drop test, impact test and vibration test required by the industry, fully meeting the mechanical performance requirements of terminal products.- Long-Term Durability: The AG etched surface has stable chemical properties, and will not cause strength degradation during long-term use, temperature changes and humidity changes, ensuring the service life of the product. 4. Our Product Advantages As a professional optical glass manufacturer, we have more than 10 years of AG etching process experience, and strictly control every link to ensure the strength of AG glass: - All AG etching processes are carried out in a fully automated production line, with 100% parameter monitoring, avoiding human error.- We use imported high-purity etching solution and strict process formulas to ensure that the glass surface has no micro-cracks and uniform microstructure.- Each batch of products is equipped with a complete mechanical performance test report, and supports customized process solutions according to customer application scenarios.- Our AG glass has passed the certification of international first-line brand customers, and is widely used in consumer electronics, automotive, medical, industrial and other fields, with reliable quality and stable performance.

Question 26

A: Dead Front Glass hides graphics when unlit, illuminates them when backlit, delivering a clean, seamless look for displays and control panels.

Accepted Answer

Question: What is the Dead Front Glass?Answer:Dead Front Glass (also called Dead Front Cover Glass / Dead Front Display Glass) is a high-value functional optical glass specially designed for display and user interface applications, which achieves a "hidden when off, visible when on" visual effect through professional surface treatment and printing technology. It has become an indispensable core component in consumer electronics, industrial control, automotive, medical and other fields, bringing a sleek, minimalist and high-end aesthetic to terminal products. 1. Core Definition and Working Principle The core feature of Dead Front Glass is its unique "dead front effect": - When the backlight is off (unlit state): The icons, text, patterns and other graphics printed on the glass are completely hidden, and the entire glass surface presents a uniform, seamless, monochromatic (usually black or dark gray) appearance, with no trace of the underlying display or buttons, achieving a "full screen seamless" visual effect.- When the backlight is on (lit state): The backlight passes through the translucent ink of the graphics, making the icons, text and patterns clearly illuminated, while the non-graphic area remains dark, ensuring high contrast and clear readability of the display content. This effect is achieved through a precise combination of material selection, ink formula and printing process: - Substrate Glass: Usually use high-transparency tempered glass, chemically strengthened glass or soda-lime glass, with excellent light transmission, mechanical strength and scratch resistance, ensuring the safety and service life of the product.- Special Ink Printing: Use high-precision screen printing or inkjet printing technology to print graphics with specific light transmittance (usually 10%-30%) on the inner surface of the glass. The ink is opaque in natural light, completely hiding the graphics; when backlit, it transmits light to present clear patterns.- Light Control Layer: Some high-end products are also equipped with AG (anti-glare), AR (anti-reflection) or AF (anti-fingerprint) coating on the surface, further improving the display effect and user experience. 2. Key Advantages of Dead Front Glass Compared with traditional display glass, Dead Front Glass has irreplaceable core advantages: - Aesthetic Upgrade: Achieve a seamless, minimalist appearance, eliminate the sense of fragmentation of traditional physical buttons and exposed displays, and greatly improve the product's grade and visual appeal.- Flexible Design: Support fully customized graphic design, including icons, text, logos, patterns, etc., to meet the personalized design needs of different products, and realize the integration of function and appearance.- Durability and Reliability: The printed graphics are located on the inner surface of the glass, which is not affected by daily wear, scratches and oil stains, ensuring long-term stable display effect and service life.- High Contrast Display: The dark background in the unlit state and the high-brightness display in the lit state form a sharp contrast, ensuring clear readability of the content in both strong light and dark environments.- Space Saving: Replace traditional physical buttons and independent display areas, reduce the product's structural complexity and volume, and help realize the lightweight and thin design of terminal products. 3. Main Application Scenarios Dead Front Glass is widely used in various fields with high requirements for appearance and display effect: - Consumer Electronics: Smart home control panels, wearable devices, smart door locks, kitchen appliances, audio equipment, etc., to achieve a seamless, high-end appearance.- Automotive Industry: Automotive central control screens, instrument panels, steering wheel control panels, car door control panels, etc., to improve the interior design sense and driving experience.- Industrial Control: Industrial control panels, medical equipment, test instruments, etc., to achieve a clean, dust-proof and easy-to-clean operation interface.- Commercial Display: Self-service kiosks, vending machines, advertising screens, etc., to enhance the product's visual appeal and user interaction experience. 4. Our Customization Capabilities and Product Advantages As a professional optical glass manufacturer, we provide one-stop customized solutions for Dead Front Glass, with core advantages: - Full Process Customization: Support customized glass size, thickness, shape, graphic design, ink color, light transmittance, etc., to fully meet customer's personalized needs.- High-Precision Printing Technology: Adopt imported high-precision screen printing equipment and special ink, with printing accuracy up to ±0.05mm, ensuring clear graphics and consistent color.- Multi-Functional Coating Support: Provide AG, AR, AF, anti-UV, anti-blue light and other functional coatings, to achieve a combination of dead front effect and other performance requirements.- Strict Quality Control: Each batch of products undergoes 100% appearance inspection, light transmittance test, adhesion test and durability test, to ensure stable product performance and compliance with international standards.- Rich Industry Experience: Our Dead Front Glass products have been widely used in automotive, consumer electronics, industrial control and other fields, serving many well-known brands at home and abroad, with reliable quality and perfect after-sales service.

Question 27

A: Chemical strengthening standard: surface stress ≥600MPa, layer depth ≥10μm, ensuring excellent mechanical performance and safety.

Accepted Answer

Question: What is the stress standard after glass chemical strengthening?Answer:Chemical strengthening (also known as ion exchange strengthening) is a core process to improve the mechanical strength of glass, which is widely used in high-strength display glass, mobile phone cover glass, automotive glass and other fields. The stress index is the most critical quantitative standard to evaluate the quality and performance of chemically strengthened glass. A complete set of scientific and standardized stress standards includes surface compressive stress (CS) and stress layer depth (DOL), and different application scenarios have different grade requirements. 1. Core Concept: Surface Compressive Stress (CS) Surface compressive stress refers to the compressive stress formed on the glass surface after ion exchange, which is the core force to resist external impact and bending. The unit is MPa (Megapascal). The higher the surface compressive stress, the stronger the ability of the glass to resist external damage such as sharp object impact and bending deformation. - Basic Qualified Standard: For general consumer electronics glass (such as entry-level mobile phone cover glass), the surface compressive stress of qualified products must be ≥ 600MPa. This is the minimum threshold to ensure that the glass can withstand daily drop and collision.- Mid-to-High End Standard: For mid-range smart devices and industrial control glass, the standard is 700MPa ≤ CS - Premium Standard: For high-end mobile phones, automotive display glass and high-strength application scenarios, the surface compressive stress is required to be ≥ 900MPa. This ultra-high stress glass has extremely strong anti-drop and anti-impact capabilities, and is the highest grade in the current market. 2. Core Concept: Stress Layer Depth (DOL) Stress layer depth refers to the depth of the compressive stress layer formed on the glass surface by ion exchange, and the unit is μm (micrometer). It directly determines the scratch resistance and long-term strength of the glass. If the stress layer is too shallow, even if the surface stress is high, the glass is easy to be scratched and the strength will drop sharply. - Basic Qualified Standard: For conventional glass thickness (0.5mm-1.1mm), the stress layer depth of qualified products must be ≥ 10μm. This ensures basic scratch resistance.- Mid-to-High End Standard: For products with high scratch resistance requirements, the standard is 15μm ≤ DOL - Premium Standard: For ultra-thin glass (thickness  3. Industry-Unified Qualification Standards Combined with the international optical glass industry standards (such as ISO 12799, ASTM C1036), the complete stress standards for different types of chemically strengthened glass are summarized as follows: Glass Type Surface Compressive Stress (CS) Stress Layer Depth (DOL) Application Scenario Soda-Lime Glass (Entry Grade) 500-700MPa 8-15μm Low-end home appliances, ordinary display panels Aluminosilicate Glass (Mid-Grade) 700-900MPa 12-25μm Mainstream mobile phones, tablets, automotive displays High-Strength Aluminosilicate (Premium Grade) ≥ 900MPa 20-40μm Flagship mobile phones, curved glass, automotive control panels Ultra-Thin Strengthened Glass 600-800MPa 15-30μm Foldable devices, ultra-thin touch screens  4. Testing Principles and Unqualified Judgment The stress of chemically strengthened glass is usually tested by a stress meter (photoelastic stress meter) based on the principle of photoelasticity: 1. Place the glass sample on the stress meter, and use polarized light to irradiate the glass.2. The stress distribution inside the glass will change the polarization state of light, and the instrument will calculate the surface stress and stress layer depth through the obtained interference fringes. Unqualified Judgment Criteria: - If the surface compressive stress is lower than 500MPa, it is a serious unqualified product, and the risk of breakage during use is extremely high.- If the stress layer depth is lower than 8μm, it is unqualified, and the glass is prone to strength degradation after being scratched.- If the stress distribution is uneven (the difference between multiple test points exceeds 100MPa), the product is unqualified, which may cause local breakage. 5. Our Product Advantages and Process Control As a professional optical glass manufacturer, our chemically strengthened glass strictly follows the highest industry standards, and has the following core advantages: - Precise Process Control: The fully automated ion exchange production line strictly controls parameters such as temperature, time and salt bath concentration, ensuring that the stress index of each batch of products is within the target range, with a tolerance of ±50MPa.- Multi-Grade Customization: We can provide stress standards of different grades according to customer needs, from entry-level 550MPa to premium 1000MPa, to meet the application requirements of different products.- Strict Quality Inspection: Each piece of glass is equipped with a stress test report, and the pass rate of 100% sampling inspection ensures product stability.- High Compatibility: Our stress layer depth design is perfectly matched with different glass thicknesses, which can effectively avoid the problem of glass warping or delamination caused by excessive stress. In summary, the stress standard after glass chemical strengthening is not a single value, but a combination of surface compressive stress and stress layer depth. Only when both indicators meet the standard can the glass have reliable mechanical strength and service life.

Question 28

A: Dead front effect is achieved via special ink screen printing on cover glass, hiding icons when off and showing them when backlit.

Accepted Answer

Question: What kind of processes can achieve the "dead front effect" of cover glass?Answer:The "dead front effect" (also known as "hidden when off, visible when on" effect) is a high-value visual function of cover glass, which is widely used in smart home control panels, automotive central controls, smart door locks, consumer electronics and other fields. The core of this effect is to make the icons, text and patterns on the glass completely hidden in the unlit state, and clearly illuminated when the backlight is turned on, achieving a seamless, minimalist and high-end appearance. At present, the most mature, stable and widely used process to achieve the dead front effect is high-precision screen printing with special semi-transparent ink, supplemented by digital inkjet printing and other auxiliary processes for different application scenarios. 1. Core Process: High-Precision Screen Printing with Special Ink Screen printing is the mainstream and most reliable process for mass production of dead front cover glass, with the advantages of high consistency, low cost and strong durability. The core principle and process flow are as follows: (1) Process Principle The dead front effect is realized by the special optical properties of the ink: - Unlit state: The special semi-transparent ink has extremely low light transmittance in natural light, and presents a consistent dark color (usually black, dark gray) with the surrounding ink layer, so the icons and patterns are completely hidden, and the entire glass surface presents a seamless, uniform appearance.- Backlit state: When the backlight is turned on, the light passes through the semi-transparent ink of the icon area, making the icons, text and patterns clearly illuminated, while the non-icon area is covered by opaque ink, ensuring high contrast and clear readability of the display content. (2) Complete Process Flow 1. Glass Substrate Preparation: Select high-transparency chemically strengthened glass, tempered glass or soda-lime glass as the substrate, and complete cutting, edge polishing, cleaning and other pre-treatment processes to ensure the flatness and cleanliness of the glass surface.2. Ink Formula Customization: Configure special semi-transparent ink for dead front effect, with precise control of light transmittance (usually 10%-30%), color difference and adhesion, to ensure the hiding effect in unlit state and the brightness in backlit state.3. High-Precision Screen Making: Make high-precision screen plates according to customer's graphic design, with printing accuracy up to ±0.05mm, ensuring the clarity and consistency of icons and text.4. Screen Printing & Curing: Print the icon pattern on the inner surface of the cover glass through screen printing, and then complete the ink curing through high-temperature baking (usually 150-200℃, 30-60 minutes) to ensure the adhesion and durability of the ink.5. Post-Processing & Inspection: Complete edge cleaning, appearance inspection, light transmittance test and backlit effect inspection to ensure that each product meets the dead front effect requirements. 2. Auxiliary Process: Digital Inkjet Printing Digital inkjet printing is an auxiliary process suitable for small-batch, personalized customization, with the advantages of no plate making, fast proofing and flexible design. - Process Principle: Use industrial-grade UV inkjet printer to directly print special dead front ink on the glass surface, and complete curing through UV light irradiation.- Applicable Scenarios: Small-batch customized products, complex graphic design, rapid proofing, etc.- Disadvantages: Compared with screen printing, the production efficiency is lower, the cost is higher, and the ink adhesion and durability are slightly inferior, so it is not suitable for large-scale mass production. 3. Key Process Control Points to Ensure Dead Front Effect To achieve a perfect dead front effect, strict control of the following key process links is essential: 1. Ink Light Transmittance Control: The light transmittance of the icon ink must be strictly controlled within 10%-30%. Too high transmittance will lead to poor hiding effect in unlit state; too low transmittance will lead to insufficient brightness in backlit state.2. Printing Accuracy Control: The printing position deviation must be controlled within ±0.05mm to ensure the alignment of icons and backlight sources, avoiding the problem of light leakage and blurring.3. Ink Adhesion Control: The ink must pass the 100-grid adhesion test, scratch resistance test and high and low temperature resistance test to ensure that it will not fall off or fade during long-term use.4. Color Difference Control: Ensure the color consistency of the icon ink and the surrounding ink layer in unlit state, avoiding the problem of pattern exposure caused by color difference. 4. Process Comparison and Selection Suggestions Process Type Advantages Disadvantages Applicable Scenarios Screen Printing High production efficiency, low cost, high ink adhesion, good consistency, mass production suitable High plate making cost, not suitable for small batch customization Mass production of automotive central controls, smart home panels, consumer electronics Digital Inkjet Printing No plate making, fast proofing, flexible design, small batch customization suitable Low production efficiency, high cost, slightly poor ink adhesion Small batch customized products, rapid proofing, complex graphic design  5. Our Process Advantages and Customization Capabilities As a professional optical glass manufacturer, we have more than 10 years of dead front effect process experience, and provide customers with one-stop customized solutions: - Mature Screen Printing Process: Adopt imported high-precision screen printing equipment and special dead front ink, with printing accuracy up to ±0.03mm, ensuring perfect dead front effect.- Full Process Customization: Support customized glass size, thickness, shape, graphic design, ink color, light transmittance, etc., to fully meet customer's personalized needs.- Multi-Functional Coating Integration: Provide AG (anti-glare), AR (anti-reflection), AF (anti-fingerprint) and other functional coatings, to achieve the combination of dead front effect and other performance requirements.- Strict Quality Control: Each batch of products undergoes 100% appearance inspection, light transmittance test, adhesion test and backlit effect inspection, to ensure stable product performance.- Rich Industry Experience: Our dead front cover glass has been widely used in automotive, smart home, consumer electronics and other fields, serving many well-known brands at home and abroad, with reliable quality and perfect after-sales service.

Question 29

A: Yes, AG and AR can be combined on cover glass, providing anti-glare, anti-reflection and superior display performance.

Accepted Answer

Question: Can the AG and AR process be realized on a cover glass ?Answer:Absolutely Yes. AG (Anti-Glare) and AR (Anti-Reflection) processes can be perfectly and stably combined on a single piece of cover glass, which is a mature, mass-proven technology widely used in high-end display, automotive, industrial and consumer electronics fields. This dual-coating solution integrates the core advantages of both processes, solving the pain points of single-process glass and achieving a comprehensive upgrade of display performance. 1. Core Functions of AG and AR Processes First, it is necessary to clarify the respective functions of AG and AR processes, which are complementary and non-conflicting: - AG (Anti-Glare) Process: Also known as anti-glare treatment, it forms a uniform micro-rough structure on the glass surface through chemical etching or physical spraying, which converts specular reflection into diffuse reflection, effectively eliminating glare, reducing ambient light reflection, and improving the visibility of the screen in strong light environments.- AR (Anti-Reflection) Process: Also known as anti-reflection coating, it deposits a multi-layer dielectric film (such as SiO₂, TiO₂) on the glass surface through vacuum magnetron sputtering, which uses the principle of optical interference to reduce the reflectivity of the glass surface from 8% (ordinary glass) to less than 1%, greatly improving light transmittance and display contrast. 2. Compatibility and Process Implementation of AG+AR Dual Coating AG and AR processes are completely compatible, and the mature process flow is as follows: 1. Glass Substrate Pre-Treatment: Select high-transparency chemically strengthened glass as the substrate, complete cutting, edge polishing, cleaning and other processes to ensure the flatness and cleanliness of the glass surface.2. AG Etching Process: First, perform chemical etching on one side of the glass to form a uniform AG anti-glare surface, and then complete cleaning and drying to ensure no residual etching solution.3. AR Coating Process: Deposit a multi-layer AR anti-reflection coating on the AG-etched surface (or the opposite smooth surface, according to customer needs) through vacuum magnetron sputtering. The AR coating can perfectly adapt to the micro-rough structure of the AG surface, ensuring the uniformity and performance of the coating.4. Post-Processing & Inspection: Complete AF (Anti-Fingerprint) coating (optional), appearance inspection, light transmittance test, reflectivity test, haze test and other quality inspections to ensure that the product meets the performance standards. 3. Core Advantages of AG+AR Dual Coating Cover Glass Compared with single AG or single AR glass, the dual-coating solution has irreplaceable comprehensive advantages: - Eliminate Glare and Improve Transmittance Simultaneously: AG eliminates the glare caused by ambient light, and AR reduces the reflectivity of the glass surface, achieving a "no reflection, no glare" display effect, which is especially suitable for outdoor display, automotive central control and other strong light environments.- Improve Display Contrast and Clarity: AR coating increases light transmittance by more than 97%, and AG coating eliminates specular reflection, making the screen content clearer, more vivid and higher in contrast, greatly improving the user's visual experience.- Wide Application Scenarios: It is widely used in high-end smart phones, tablet computers, automotive displays, industrial control screens, outdoor advertising machines, medical display equipment and other fields, meeting the dual needs of anti-glare and high transmittance.- Compatible with Other Functional Coatings: AG+AR dual coating can be combined with AF (anti-fingerprint), anti-UV, anti-blue light and other functional coatings to achieve a one-stop solution of multiple functions. 4. Key Performance Indicators of AG+AR Dual Coating Glass The standard performance parameters of mature AG+AR dual coating cover glass are as follows: Performance Index Standard Value Function Description Light Transmittance ≥ 97% AR coating significantly improves light transmittance, making the screen brighter Surface Reflectivity ≤ 1% AR coating reduces specular reflection, eliminating screen reflection Haze 5%-20% (customizable) AG coating controls diffuse reflection, eliminating glare Pencil Hardness ≥ 7H High hardness of AR coating, ensuring scratch resistance Coating Adhesion Pass 100-grid test Stable combination of AG and AR coatings, no falling off  5. Our Process Advantages and Customization Capabilities As a professional optical glass manufacturer, we have mature AG+AR dual coating process technology, with the following core advantages: - Mature Mass Production Process: The fully automated production line ensures the stability and consistency of each batch of products, with a yield rate of over 99%.- Customizable Performance Parameters: Support customized haze (AG), reflectivity (AR), light transmittance and other parameters according to customer application scenarios, to meet personalized needs.- Multi-Functional Coating Integration: Provide AG+AR+AF triple coating, anti-UV, anti-blue light and other integrated solutions, one-stop meeting customer needs.- Strict Quality Control: Each product undergoes 100% appearance inspection, light transmittance test, reflectivity test and durability test, and is equipped with a complete test report.- Rich Industry Experience: Our AG+AR dual coating cover glass has been widely used in automotive, consumer electronics, industrial control and other fields, serving many well-known brands at home and abroad, with reliable quality and perfect after-sales service.

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A specialist in precision optical glass with 19 years of experience, providing comprehensive, satisfying custom solutions.

A specialist in precision optical glass with 19 years of experience, providing comprehensive, satisfying custom solutions.