Mohs 9 Single Crystal Sapphire
Ultra-hard aerospace-grade substrate provides excellent scratch resistance, impact resistance and long-term durability under harsh airborne and orbital conditions.
aerospace sapphire cover | Custom Sapphire Window Lids
group nameCustom Sapphire Optical Components
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Min Order5 piece
brand nameFELIX GLASS optical glass Manufacturing base
modelFG- SOC-BLK-001
payment methodL/C, D/A, D/P, Western Union
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update timeFri, 28 Aug 2026 07:37:02 GMT
Paramtents
Material Synthetic Single-Crystal Sapphire (BK7/K9 optical glass available as secondary custom option)
Spectral Range 150nm ~ 5.5μm (UV-Vis-Mid IR)
Mohs Hardness 9.0
Operating Temperature -200℃ ~ 1600℃
Surface Quality 20/10, 10/5 Aerospace Grade
Dimensional Tolerance ±0.01mm
Available Coating UV/Visible/IR AR coating
Custom Options Shape, size, mounting holes, edge treatment
Packging & Delivery
Size50cm x50cm x30cm
Weight0.5kg / piece
Min Order5 piece
Briefing
Aerospace grade sapphire covers. Hard, heat-resistant and wide UV-IR transmittance for defense & aviation use.
Detailed
Aerospace single crystal sapphire protective optical lids & covers
Aerospace Grade Sapphire Optical Covers | Custom Sapphire Window Lids
Felix Glass Co., Limited manufactures aerospace grade sapphire optical covers and custom sapphire window lids fabricated from premium single-crystal sapphire. These high-performance protective optics shield sensitive optical sensors, cameras and precision instruments under extreme aerospace operating environments while preserving high light transmittance and consistent dimensional stability. Featuring Mohs 9 extreme hardness, superior thermal shock resistance and broad-spectrum transmission, our sapphire covers guarantee stable operation of critical optical systems under high temperature, pressure and cosmic radiation conditions.
Direct answer
Aerospace Optical System Risks Solved By Sapphire Optical Covers
Standard optical glass lacks sufficient hardness, thermal stability and radiation tolerance required for space, high-altitude aircraft and defense optical equipment. Aerospace grade sapphire window lids deliver outstanding scratch and impact resistance, wide UV to mid-infrared transmission and low thermal expansion. The rigid sapphire barrier protects internal optical assemblies against particle erosion, rapid temperature fluctuation and long-duration space radiation without degrading imaging or sensing performance.
Broad Spectrum Optical Transmission
Stable transmittance covering 150nm to 5.5μm, supporting multi-band UV, visible and mid-infrared aerospace optical detection systems.
Drawing-Based Full Customization
Shape, dimension, thickness, mounting holes, edge finishing and aerospace AR coating specifications can be finalized per customer engineering drawings before production.
Attention to specification
Material & Aerospace-Grade Technical Parameters For Engineering Review
The core raw material is high-purity aerospace single-crystal sapphire. For projects with strict cost control without extreme abrasion requirements, fused silica optical windows can be selected as an alternative solution. We support wavelength-specific AR anti-reflection coatings and customized mechanical features including mounting holes, chamfered edges and sealing profiles.
- Base Material: Aerospace grade high-purity single crystal sapphire.
- Available Configurations: Flat sapphire covers, curved/domed protective lids, custom outlines with mounting features.
- Functional Coatings: UV / Visible / Mid-IR band targeted AR anti-reflection coatings for aerospace optical systems.
- Service Mode: OEM & ODM aerospace customization, prototype sampling and mass serial production available.
Interest stage
Key Product Specifications For Aerospace Sapphire Optical Covers
| Product type | Aerospace Grade Sapphire Optical Covers | Custom Sapphire Window Lids |
|---|---|
| Model reference | FG-SAPPHIRE-COVER-AERO01 |
| Material | Aerospace Grade High-Purity Single-Crystal Sapphire |
| Spectral Transmission Range | 150nm ~ 5.5μm (UV – Visible – Mid IR) |
| Mohs Hardness | 9.0 |
| Operating Temperature | -200℃ ~ 1600℃ |
| Surface Quality | Aerospace Grade 20/10, 10/5 MIL STD |
| Dimensional Tolerance | ±0.01mm |
| Coating Options | Wavelength-specific AR anti-reflection coating |
| Customizable Items | Shape, size, thickness, mounting holes, edge treatment |
| Quality Standard | Aerospace-grade optical performance & environmental stability inspection |
Application match
Main Application Fields Of Aerospace Sapphire Optical Window Lids
Orbital altitude, flight speed, spectrum band and environmental loads determine final outline geometry, thickness and coating scheme. Our aerospace sapphire optical covers deliver consistent protection for space-borne payloads, airborne platforms and ground defense optical detection equipment.
Satellite & Space-Borne Optical Sensors
Protective sapphire window lids for on-orbit observation payloads resisting long-term cosmic radiation and temperature cycling.
Aircraft & UAV EO/IR Imaging Systems
Hard sapphire covers shield airborne cameras and targeting optics under high-altitude flight conditions and particle erosion.
Defense & Harsh Environment Optical Instruments
Reliable optical protection for military optical equipment and industrial optical instruments operating under extreme temperature and abrasion conditions.
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Felix Glass RFQ & Production Workflow For Aerospace Sapphire Optical Covers
Aerospace Drawing Review
Check outline dimension, thickness, mounting hole layout, optical zone, tolerance and environmental working requirements.
Sapphire Blank Cutting
Select qualified single-crystal sapphire ingot and calculate machining allowance according to customer aerospace drawings.
CNC Precision Machining & Grinding
CNC contour cutting, hole machining and surface grinding to form custom flat or curved sapphire cover geometry.
Optical Polishing & Vacuum Coating
Ultra-precision surface polishing followed by vacuum deposition of wavelength-matched AR anti-reflection coatings.
Aerospace-Grade Inspection & Packing
Full dimension, surface and optical testing; shockproof anti-scratch packaging for aerospace supply chain transit.
Original capability retained
From Aerospace Prototype Sampling To Mass Sapphire Cover Orders
We support small-batch prototype sampling and large-volume serial manufacturing of custom aerospace sapphire optical covers and window lids. To receive accurate formal quotation, please submit engineering drawing, order quantity, outline specification, coating requirements, dimensional tolerance, operating environment and aerospace acceptance testing standards.
Prototype lead time and bulk delivery cycle depend on part shape complexity, customized hole features and aerospace coating testing requirements. Simple flat sapphire cover models complete feasibility evaluation rapidly; complex multi-feature aerospace components will arrange dedicated engineering communication to optimize design and control overall project cost.
Decision support
Select Sapphire vs Fused Silica Window For Your Aerospace Project
Choose Sapphire Optical Covers When
Optical surfaces face continuous abrasion, particle impact, repeated cleaning; priority is extreme surface hardness and long service lifetime in harsh aerospace environments.
Choose Fused Silica Windows When
Application focuses on wide UV transmission, ultra-low thermal expansion and high-temperature resistance without demanding scratch-resistant performance.
Confirm AR Coating Requirements When
The optical system operates on fixed wavelength bands and requires minimized surface reflection to improve imaging and detection signal-to-noise ratio.
Related aerospace sapphire optical components
Internal Links For Sapphire Optical Product Cluster Comparison
Buyer FAQ
Frequently Asked Questions About Aerospace Grade Sapphire Optical Covers
What are aerospace grade sapphire optical covers used for?
Aerospace sapphire optical covers protect optical sensors, cameras and precision instruments on satellites, aircraft and defense systems, delivering scratch resistance, thermal stability and high transmittance under extreme harsh environments.
Can you produce custom shapes and sizes for aerospace projects?
Yes. We fully customize outline shape, dimension, thickness, mounting holes and edge finishing strictly according to your technical drawings and aerospace specifications.
Can AR anti-reflection coating be supplied for sapphire covers?
We provide wavelength-targeted AR coatings for UV, visible and infrared wavebands to maximize light transmittance matching your specific optical system design.
What inspection standards apply to aerospace sapphire covers?
All sapphire optical covers are manufactured and inspected following aerospace-grade requirements covering optical performance, dimensional accuracy and environmental stability testing.
Do you support aerospace prototype and small batch orders?
Yes. We offer prototype sampling, small-batch trial production and mass manufacturing to satisfy different verification and formal production phases of aerospace projects.
Action stage
Submit Your Sapphire Cover Drawing For Aerospace Engineering Evaluation & Quotation
Share your aerospace project background, sapphire optical cover engineering drawing, coating specifications and target order quantity. Felix Glass aerospace optical engineering team will evaluate manufacturability, optical performance and inspection requirements and issue official quotation for custom aerospace grade sapphire window lids.
You need a product
- Nearest port for product export
- Shenzhen, Guangzhou
- Delivery clauses under the trade mode
- FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES
- Acceptable payment methods
- T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Westem Union, Cash, Escrow