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OEM longpass fused silica filter AR & ITO Coating, High Durability Laser Protection Filter

OEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection Filter
OEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection FilterOEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection FilterOEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection FilterOEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection FilterOEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection FilterOEM longpass fused silica filter AR & ITO Coating,  High Durability Laser Protection Filter
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CategoriesLongpass Shortpass Filters
BrandFELIX GLASS optical glass Manufacturing base
ModelFG-LP-FS-AR-ITO
Substrate MateriaHigh purity JGS1 bubble-free fused silica quartz glass
Functional CoatingDual-layer broadband AR anti-reflection + transparent conductive ITO coating, target band transmitta
Customizable ParameterCustom square/round outline, thickness, arbitrary longpass cut-off wavelength
Core PerformanceAnti-static, scratch-resistant, acid-alkali resistant, stable under long-term laser irradiation
FOB portSHENGZHEN SHANGHAI GUANGZHOU
Terms of PaymentL/C, D/A, D/P, Western Union
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Detail Information

OEM Longpass Fused Silica Quartz Filter With AR & ITO Composite Coating For Laser Protection

 
Felix Glass OEM longpass optical filter adopts high-purity JGS1 fused silica quartz as substrate, processed with double-sided composite vacuum coating: broadband AR anti-reflection film + conductive ITO transparent film, integrating long-wave cut-off filtering, high light transmittance, static elimination and laser protection functions.
 
Longpass optical design blocks short-wave light below customized cut-off wavelength and stably transmits long-wave target band, the composite AR+ITO coating ensures the transmittance of target spectrum reaches above 90%. ITO conductive layer eliminates static accumulation on the filter surface to avoid dust adsorption and laser beam distortion; AR coating reduces surface reflection loss and suppresses stray light interference. Fused silica substrate features ultra-low thermal expansion and high scratch resistance, achieving ultra-high durability for long-time continuous laser equipment operation.
 

Core Optical Specifications

 
- Raw Material: Bubble-free high purity JGS1 fused silica quartz glass

- Filter Type: Longpass wavelength cut-off filter, customizable cut-off point

- Composite Coating: Broadband AR anti-reflection coating + transparent conductive ITO coating

- Target Band Transmittance: ≥90%

- Blocking Depth: OD2~OD6 customizable for short-wave rejection

- Working Spectrum: 185nm–2100nm deep UV to near infrared

- Surface Quality: Standard 60-40 scratch-dig, upgradeable to high precision 40-20

- Durability: Acid & alkali resistant, anti-scratch, anti-static, stable under long-term laser irradiation

- Custom Parameter: Custom square/round size, thickness, cut-off wavelength
 

Core Product Advantages

 
1. AR+ITO dual functional composite coating, realize anti-reflection high transmittance and static elimination conductive performance at the same time

2. Longpass filtering function, customizable cut-off wavelength to filter stray short-wave light and protect laser internal optical elements

3. ≥90% transmittance in working band, reduce laser energy loss and improve equipment output efficiency

4. Fused silica quartz substrate with ultra-high temperature resistance and stable performance, far more durable than ordinary K9 glass filters

5. OEM full customization support: shape, size, cut-off wavelength, coating parameters all adjustable according to customer laser system drawings

6. Anti-static ITO layer prevents dust adhesion, reduce equipment maintenance frequency and extend service life
 

Typical Application Scenarios

 
- Industrial fiber laser, UV laser marking & cutting machine protection windows

- Laboratory UV-Vis-NIR spectral analysis optical instruments

- Semiconductor wafer detection optical filter modules

- Machine vision long-wave imaging detection equipment

- Medical laser diagnosis & beauty laser safety protection assemblies

- Optical testing equipment anti-stray-light filtering windows

 

OEM Manufacturing Capability

 
We provide full one-stop fused silica filter processing including quartz blank double-sided polishing, vacuum AR+ITO composite coating deposition, wavelength spectral testing, laser durability aging test, edge chamfer treatment.
Prototype sample customization, small-batch trial order and mass OEM supply are supported. Every longpass quartz filter is fully tested for transmittance, blocking depth and coating adhesion before delivery.
 

Standard FAQ

 
1. What are the functions of AR coating and ITO coating respectively?
AR coating reduces surface reflection to raise light transmittance; ITO conductive coating eliminates static electricity to prevent dust adsorption and laser beam distortion.

2. What is longpass filter used for in laser equipment?
It blocks short-wave stray light below the cut-off wavelength, only transmits the required long-wave laser band, protects internal optical lenses and sensors from stray light damage.

3. Can I customize cut-off wavelength and filter size for laser protection?
Yes, we support custom square/round dimensions, thickness, and arbitrary longpass cut-off wavelength matched to UV, visible or near-infrared laser equipment.

4. Why choose fused silica instead of BK7 glass for laser filter?
Fused silica transmits deep UV light, high temperature resistant, low thermal expansion, no deformation under long-time laser irradiation, better durability than BK7 glass.

5. Do you provide OEM customized coating parameters for ITO AR longpass filters?
We support OEM custom coating sheet resistance, AR band range and light blocking depth, provide complete spectral test report for each batch

Related Products: 

Plano Convex Spherical Lens, 

AR Coated Optical Window, 

Laser Line Filter,

 Custom Optical Prism

Optical Domes


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Custom Precision Optical & Glass Components Manufacturer – Felix Glass Co., Limited.

We supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.

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Learn more from our FAQ
What is the minimum order quantity for custom precision optical glass components?

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.

Can I get free glass samples for testing before bulk order?

Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?

A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?

All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.

Do you offer one-stop custom optical glass processing services?

Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.

CONTACT US NOW FOR A QUOTE
We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.

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