Aerospace Grade Sapphire Optical Covers | Custom Sapphire Window Lids

Aerospace grade sapphire optical covers are high-performance protective optical components made of premium single-crystal sapphire. These covers are designed to protect sensitive optical sensors, cameras and instruments in extreme aerospace environments, while maintaining high light transmittance and dimensional stability. With ultra-high hardness, excellent thermal shock resistance and wide spectral transmission, they ensure reliable operation of critical optical systems under high temperature, high pressure and radiation conditions.

Core Advantages

• Mohs 9 ultra-hard material, scratch-resistant and impact-resistant
• Wide spectral transmission from UV to mid-infrared for multi-band optical systems
• Excellent high-temperature resistance and thermal shock stability
• High radiation resistance, suitable for space and high-altitude applications
• Low thermal expansion coefficient, ensuring stable optical performance in temperature changes
• Custom shapes, sizes and mounting interfaces for aerospace equipment
• Strict quality control to meet aerospace-grade reliability requirements
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Available Types & Configurations

• Flat sapphire optical covers with various shapes (round, square, rectangular)
• Curved or domed sapphire protective lids
• Sapphire covers with customized mounting holes or edges
• Sapphire covers with anti-reflection coating for specific working bands
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Key Technical Specifications

Item	Parameter
Material	High-Purity Single-Crystal Sapphire (Aerospace Grade)
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

Main Applications

• Satellite and space-borne optical sensor protection
• Aircraft and UAV camera and optical system covers
• Aerospace EO/IR imaging and targeting systems
• High-altitude and high-speed aircraft optical windows
• Defense and military optical equipment protection
• Harsh-environment industrial optical instruments
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Custom Service

• Custom size, shape, thickness and mounting features according to aerospace drawings
• Precision machining, polishing and edge finishing for high reliability
• Targeted anti-reflection coating for specific working wavelengths
• Strict testing and inspection to meet aerospace quality standards
• Small batch prototypes and production orders supported
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Call to Action

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Related Links

Link: Sapphire Domes

Link: Aerospace Grade Sapphire Optical Material Selection Guide

Link: Custom Sapphire Windows

 Link: Sapphire Optical Components

 Link: Sapphire Thermal & Mechanical Properties – Hardness, Strength & Heat Resistance Data

Link: Sapphire Optics Knowledge Center

Related Products: Custom Sapphire Windows, Sapphire Domes, Sapphire Optical Cubes Related Articles: [Knowledge Center] Aerospace Grade Sapphire Optical Material Selection Guide

Exclusive FAQ

Q1: What are aerospace grade sapphire optical covers used for? A: They are used to protect optical sensors, cameras and instruments in satellites, aircraft and defense systems, providing scratch resistance, thermal stability and high light transmittance in harsh environments.

Q2: Can you make custom shapes or sizes for aerospace projects? A: Yes. We fully customize the shape, size, thickness, mounting holes and edge treatment according to your technical drawings and specifications.

Q3: Do you provide AR coating for aerospace sapphire covers? A: Yes. We offer anti-reflection coatings for UV, visible and infrared bands to maximize light transmittance for your specific optical system.

Q4: What testing standards do your aerospace sapphire covers meet? A: Our sapphire covers are produced and inspected to meet aerospace-grade quality standards, including optical performance, dimensional accuracy and environmental stability tests.

Q5: Can you support small-batch or prototype orders for aerospace projects? A: Yes. We support prototype sampling, small-batch trial production and full-scale production to meet different aerospace project stages.