Felix Glass Custom Heat-Resistant Round Optical Sight Window, 0.5–200mm Fused Silica & Sapphire IR Window
- Model
- FG-WIN-03
Item specifics
- Material
- Sapphire (Al₂O₃) 1: High Purity Fused Silica 2: Synthetic Single-Crystal
- Diameter Range
- 0.5mm – 200mm
- Thickness Range
- 0.1mm – 30mm
- SiO₂ Purity (Quartz)
- ≥99.99%
- Sapphire Purity:
- 99.99% Al₂O₃
- Long-Term Working Temp (Quartz
- 1100–1200℃
- Long-Term Working Temp (Sapphire)
- ≤1800℃
- Thermal Expansion Coefficient (Fused Silica
- 5.5 × 10⁻⁷ /°C
- Sapphire Softening Point
- 2040℃
- Processing
- Round cutting, edge chamfering, double-sided polishing, mounting hole drilling
- Optional Coating
- IR anti-reflection coating, broadband AR coating, UV enhanced coating
Review
Description
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
| Property | Fused Silica Window | Sapphire IR Window |
|---|---|---|
| Raw Material | High Purity Fused Silica | Single Crystal Al₂O₃ Sapphire |
| Diameter Range | 0.5–200mm | 0.5–200mm |
| Long-Term Usable Temp | 1100–1200℃ | Up to 1800℃ |
| Main Transmission Band | UV ~ Near IR | Visible ~ Mid/Far IR |
| Surface Hardness | Medium | Ultra-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
Link: Custom Sapphire Windows
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.
