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Felix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR Window

Felix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR Window
Felix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR WindowFelix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR WindowFelix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR WindowFelix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR WindowFelix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR Window
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CategoriesSapphire Optical Windows
BrandFELIX GLASS optical glass Manufacturing base
ModelFG-WIN-03
MaterialSapphire (Al₂O₃) 1: High Purity Fused Silica 2: Synthetic Single-Crystal
Diameter Range0.5mm – 200mm
Thickness Range0.1mm – 30mm
SiO₂ Purity (Quartz)≥99.99%
Sapphire Purity:99.99% Al₂O₃
Long-Term Working Temp (Quartz1100–1200℃
Long-Term Working Temp (Sapphire)≤1800℃
Thermal Expansion Coefficient (Fused Silica5.5 × 10⁻⁷ /°C
Sapphire Softening Point2040℃
ProcessingRound cutting, edge chamfering, double-sided polishing, mounting hole drilling
Optional CoatingIR anti-reflection coating, broadband AR coating, UV enhanced coating
FOB portSHENGZHEN SHANGHAI GUANGZHOU
Terms of PaymentL/C, D/A, D/P, Western Union
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Detail Information

Felix Glass Custom Heat-Resistant Round Optical Observation Window (0.5–200mm Fused Silica & Sapphire IR Window)

 
Felix Glass manufactures tailor-made round heat-resistant optical sight windows with diameter from 0.5mm to 200mm, supplied in two core optical materials: high-purity fused silica and single-crystal sapphire, designed for high-temperature observation, infrared detection and precision industrial optical systems.




Technical Specification Table
PropertyFused Silica WindowSapphire IR Window
Raw MaterialHigh Purity Fused SilicaSingle Crystal Al₂O₃ Sapphire
Diameter Range0.5–200mm0.5–200mm
Long-Term Usable Temp1100–1200℃Up to 1800℃
Main Transmission BandUV ~ Near IRVisible ~ Mid/Far IR
Surface HardnessMediumUltra-high scratch resistance
 
Two Core Material Options
 
Option A: Fused Silica Observation Window
 
Made of ≥99.99% purity fused silica quartz, stable long-term working temperature at 1100–1200°C. Outstanding transmittance covering deep UV, visible light and near-infrared bands, excellent anti-thermal shock performance to resist 1000°C temperature difference without cracking. Low cost for mass industrial furnace sight glass, lab reaction vessel observation ports.
 
Option B: Synthetic Sapphire IR Window
 
Single crystal alumina sapphire with ultra-high hardness and maximum softening point up to 2040°C, ideal for ultra-high temperature, high-pressure and corrosive working environments. It maintains stable light penetration in mid & far infrared wavebands, widely used for thermal imaging, aerospace infrared detection and semiconductor high-temperature process monitoring.
 
Custom Processing Capacity of Felix Glass
 
- Size customization: Round windows with diameter 0.5mm to 200mm, thickness adjustable 0.1–30mm
- Precision machining: Edge chamfering, double-sided optical polishing, mounting hole drilling, step edge design
- Optical coating: IR anti-reflection film, broadband AR coating, UV transmission coating as customer spectrum demands
- Tolerance control: Dimensional tolerance ±0.01mm, surface flatness meets MIL-STD optical standard
 
Core Product Advantages
 
1. Dual material selection: Quartz for general high-temp use, sapphire for extreme high-temperature & infrared scenarios
2. Wide size coverage: Micro 0.5mm small window to large 200mm observation glass for diverse equipment
3. Superior heat & corrosion resistance: Both materials resist acid, alkali and high-temperature oxidation
4. Stable infrared optical performance: Low absorption loss for thermal imaging and IR monitoring equipment
5. Full one-stop OEM customization: Felix Glass supports drawing-based custom production, small samples & bulk orders
 
Main Application Fields
 
Industrial high-temperature furnace observation ports, thermal imaging infrared detection windows, semiconductor diffusion equipment sight glass, aerospace optical monitoring components, laboratory high-pressure reaction vessel windows, infrared curing & laser testing equipment protective optical covers.
 
All round optical sight windows from Felix Glass pass spectral transmittance testing, high-temperature aging inspection and surface defect scanning before delivery to guarantee stable long-term operation.


 

RFQ – Get Quote in 24 Hours


Send us your drawings or specifications:

Material requirements

Application type

Wavelength conditions

Environmental requirements


Our engineering team will provide:


✔ Technical feasibility analysis

✔ Manufacturing recommendation

✔ Detailed quotation within 24 hours


Related Links

Link: Sapphire Domes

Link: Aerospace Grade Sapphire Optical Material Selection Guide



 
Exclusive FAQ
Q1: What diameter range of round optical observation windows can Felix Glass produce?
A: Felix Glass provides custom round sight windows with diameter covering 0.5mm up to 200mm, adjustable thickness from 0.1mm to 30mm.
 
Q2: What two materials does Felix Glass offer for heat-resistant optical windows?
A: We supply high-purity fused silica quartz for general high-temperature use and single-crystal sapphire for infrared & ultra-high temperature working conditions.
 
Q3: What is the maximum long-term working temperature of Felix Glass sapphire IR window?
A: Our sapphire window can stably work under 1800°C continuously, far higher than 1100–1200°C of fused silica windows.
 
Q4: Can Felix Glass add infrared anti-reflection coating on sapphire observation windows?
A: Yes, Felix Glass supports IR anti-reflection, broadband AR and UV enhanced coating for both quartz and sapphire round windows.
 
Q5: Does Felix Glass drill mounting holes on large 200mm round optical sight glass?
A: We offer full precision processing including edge chamfering, double-sided polishing and custom hole drilling for all size windows.
 
Q6: What equipment are Felix Glass sapphire infrared observation windows mainly used for?
A: Widely applied in thermal imaging detectors, aerospace infrared monitoring and ultra-high temperature semiconductor furnaces.
 
Q7: Can Felix Glass supply tiny 0.5mm micro round optical windows for miniature instruments?
A: Yes, we produce micro-size round windows starting at 0.5mm diameter for small precision optical testing devices.
 
Q8: Is Felix Glass fused silica sight window resistant to rapid cold and hot temperature alternation?
A: The fused silica version withstands 1000°C temperature difference thermal shock without cracking for industrial furnace observation.
 
Q9: Does Felix Glass accept small sample orders of custom sapphire IR optical windows?
A: Felix Glass supports both small trial sample batches and long-term mass wholesale orders for global industrial buyers.
 
Q10: What inspection standards do Felix Glass round optical windows follow before shipment?
A: Every batch passes spectral transmittance test, high-temperature aging verification and surface defect scanning to meet industrial optical standards.

 


CONTACT US NOW FOR A QUOTE
Send an inquiry now—we will respond promptly within 1–24 hours and provide our best formal quote within 1–2 days! Let’s start a mutually beneficial partnership today...
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Learn more from our FAQ
What is your MOQ for custom optical glass and display glass parts?

Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.

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?

What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.

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

All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.

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

Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.

CONTACT US NOW FOR A QUOTE
Send an inquiry now—we will respond promptly within 1–24 hours and provide our best formal quote within 1–2 days! Let’s start a mutually beneficial partnership today...
*Email
Name
*Title
*Content

 

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


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