Hard Protective Barrier
Mohs 9 hardness helps resist scratches and wear from dust, cleaning and process exposure that can degrade an ordinary optical cover.
Home / Products / Infrared Optical Components / ZnSe Lenses
Home / All / Sapphire Optical Components / Sapphire Optical Windows / Sapphire Optical Window for High Temperature Industrial Sensor
Looking for Custom Optical Components?
✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes
Sapphire Optical Window for High Temperature Industrial Sensor
| Share | |
|---|---|
| Categories | Sapphire Optical Windows |
| Brand | FELIX GLASS optical glass Manufacturing base |
| Model | FG-WIN-03 |
| 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 |
| FOB port | SHENGZHEN SHANGHAI GUANGZHOU |
| Terms of Payment | L/C, D/A, D/P, Western Union |
| Download |  |
Detail Information
A single-crystal sapphire optical window protects sensor optics from heat, abrasion, pressure and corrosive process exposure while maintaining a clear optical path. Felix Glass manufactures custom round, square, rectangular and drawing-defined windows for pyrometers, flame sensors, thermal monitoring, furnace observation and high-temperature process instrumentation. Sapphire remains mechanically stable across demanding temperature cycles. Final operating limits should be reviewed with the window thickness, mount and coating design. A broad UV-to-infrared transmission range supports visible inspection, flame sensing, pyrometry and selected IR monitoring applications. For material selection guidance, review sapphire optical glass and related custom optical components. Material, mount clearance and thermal-cycle requirements are reviewed together before the drawing is released for production. Diameter, thickness, holes, steps, chamfers and edge profiles are machined to suit the sensor housing and sealing method. Sapphire is selected where the optical interface must tolerate abrasion, pressure or chemically demanding process conditions. Share wavelength, operating temperature, pressure, atmosphere, mounting method and target quantity. Engineers confirm feasible dimensions, tolerances, polish requirements and coating band. Sample parts are machined, polished and inspected against the approved specification. Approved process controls support small batches and ongoing OEM supply. Provide the drawing or diameter, thickness, clear aperture, tolerance, wavelength, coating, operating temperature, pressure, sealing method and annual quantity. Yes. CNC machining can support holes, steps, chamfers and drawing-defined profiles, subject to geometry and tolerance review. The safe rating depends on the sapphire part, coating, mount, seal, pressure differential and heating or cooling rate. These conditions should be reviewed as one assembly. Yes. Share the operating band, incidence angle and environmental conditions so the coating can be evaluated for the optical and thermal requirement. Send the sensor-window drawing and operating conditions. Felix Glass will review material, geometry, polishing, coating and inspection requirements for a manufacturable proposal.
Sapphire window engineering for harsh sensing environments
Sapphire Optical Window for High-Temperature Industrial Sensors
Mohs 9 surface hardness
High-temperature material stability
Drawing-based OEM machining
Interest
Why Sapphire Is Used in High-Temperature Sensor Windows
Thermal Stability
Useful Optical Transmission
Interest
Custom Specification Options
Material Optical-grade single-crystal sapphire (Al2O3) Geometry Round, square, rectangular, stepped, drilled or drawing-defined Optical Finish Double-side polish with surface quality and flatness defined by the application Edge Work Fine ground, polished, chamfered, beveled or stepped edges Coating Application-specific AR or IR coating reviewed by wavelength, angle and temperature Inspection Dimension, visual quality, surface finish and optical checks per agreed drawing
Desire
Built Around the Sensor Assembly, Not a Generic Stock Window
High-Temperature Validation
Precision CNC Machining
Harsh-Environment Protection
Desire
OEM Manufacturing Workflow
Application Review
Drawing and Coating Review
Prototype and Inspection
Repeatable Production
Action
Engineering FAQ
What information is needed to quote a sapphire sensor window?
Can the window include holes, steps or a special edge?
How should the temperature rating be specified?
Can AR coating be customized for a sensor wavelength?
Action
Contact Engineering
Request a Grade-A Engineering Review
Need Custom Optical Glass Solution?
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQ
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.
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...
- Name
- *Title
- *Content
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...
- Name
- *Title
- *Content
