Provide a stable human-computer interaction experience for long-term operating equipment.
Case grouping
Categories
- Custom Sapphire
- Custom Precision Optical Components
- Custom Display Glass Panels
- Custom Quartz Glass
- Custom Infrared Optical Components
- Custom 3D Curved Glass
- Custom UTG Ultra-Thin Flexible Glass
- Custom LED-Illuminated Glass
- Customized Semiconductor Glass
- Custom Monocrystalline/Polycrystalline Silicon Lenses
- Custom TGV Glass
Aerospace EO/IR Sapphire Protective Window Upgrade for Night Vision Thermal Surveillance Systems
Aerospace EO/IR Sapphire Protective Window Upgrade for Night Vision Thermal Surveillance Systems
Aerospace EO/IR Sapphire Protective Window Upgrade
When an airborne EO/IR surveillance pod integrator faced recurring thermal shock drift and insufficient multi-band transmittance, the legacy protective window became the single point of failure that limited mission readiness.
The Challenge
A US-based defense optical integrator supplying EO/IR surveillance pods for airborne intelligence platforms encountered two critical failures with their existing protective window assembly. First, rapid altitude and temperature changes caused thermal shock drift that shifted the optical axis during mission-critical imaging windows. Second, the original multi-layer coated glass window delivered insufficient transmittance across the required 0.4–12 µm spectral band, degrading both visible-spectrum target identification and long-wave infrared thermal detection.
Thermal Shock Drift
Rapid temperature swings from ground level to cruising altitude induced optical axis shift exceeding 15 µrad, pushing the system beyond its boresight retention tolerance.
Low Multi-Band Transmittance
LWIR transmittance fell below 82% at 8–12 µm due to coating degradation under repeated thermal cycling, reducing target detection range by approximately 18%.
Surface Erosion at Speed
Rain erosion and sand particle impact at high airspeeds progressively pitted the outer window surface, creating scatter centers that degraded the modulation transfer function over successive sorties.
Our Multi-Band Sapphire Window Solution
The optical upgrade centered on a purpose-engineered mono-crystalline sapphire protective window designed to address all three failure modes simultaneously. Sapphire was selected for its exceptional combination of broad spectral transmission, high thermal conductivity, and mechanical hardness unmatched by conventional optical glasses.
Full-Spectrum Transmittance
C-axis oriented sapphire substrate with dual-side broadband AR coating achieving ≥ 88% average transmittance from 0.4 µm through 12 µm, with peak LWIR transmittance exceeding 92%.
Thermal Stability
Sapphire's thermal conductivity of 35 W/m·K at room temperature enables rapid thermal equilibration across the aperture, keeping optical axis drift under 5 µrad across the full operational temperature envelope.
Hardness & Erosion Resistance
Mohs 9 hardness delivers rain erosion and sand impact resistance far exceeding that of multi-layer coated BK7 or fused silica windows, preserving surface quality and MTF over hundreds of flight hours.
Key Performance Improvements
+10%
Avg. Multi-Band Transmittance Gain
Measured across 0.4–12 µm compared with the legacy coated-glass window assembly.
< 5 µrad
Boresight Drift Under Thermal Shock
Stable optical axis retention across the full -54°C to +71°C operational temperature range.
3×
Extended Service Interval
Window replacement cycles extended from approximately 200 flight hours to over 600 hours before measurable MTF degradation.
92%+
Peak LWIR Transmittance
At 8–12 µm, restoring full thermal detection range for target acquisition and classification at standoff distances.
Technical Implementation
Related Resources
Upgrade Your EO/IR Protective Window
Whether you are addressing thermal drift, transmittance gaps, or surface durability in an existing airborne surveillance platform, our engineering team can assess your window specification and propose a drop-in sapphire upgrade path.
Industrial Automation
Medical Equipment
Supports gloved operation, high stability and long-term validation.
Payment Terminals
High cost-performance ratio, fast import.
Outdoor
Sunlight-visible, waterproof, and resistant to violent damage.
Farm Machinery & Construction Vehicles
Vibration resistant, dustproof, waterproof, all-weather operation.
Intercoms System
Anti-interference, anti-glare.
Maritime & Aerospace
Stable Interaction in Complex Environments。
Optical Glass & Professional Touch Panel Glass Processing
After a full range of optical glass products, we also provide professional deep processing for touch screen panel glass.![[Automotive Tempered Glass Solutions Provider]](https://icdn.tradew.com/file/202410/1576316/jpg/8343425.jpg)
[Automotive Tempered Glass Solutions Provider]
FELIX GLASS As a certified IATF 16949:2016 manufacturer, High-Impact Tempered Glass for New Energy Vehicle Dashboards - HD, Anti-Scratch, UV Protection, we deliver precision-engineered tempered glass solutions for next-gen EV dashboards,central control screens, and in-vehicle systems. Our certification-driven approach ensures compliance with automotive OEM standards.
![[Medical Grade Tempered Glass Cover Solution]](https://icdn.tradew.com/file/202410/1576316/jpg/8343437.jpg)
![[Medical Grade Tempered Glass Cover Solution]](https://icdn.tradew.com/file/202410/1576316/jpg/8209139.jpg)
[Medical Grade Tempered Glass Cover Solution]
As a leading custom tempered glass cover manufacturer, FELIX GLASS provides custom tempered glass covers for LCD screen protection, as well as FDA/CE certified custom tempered glass for portable ultrasound systems, which are ultra-thin, drop-proof, and disinfection-resistant. We specialize in providing precision engineering solutions that meet the stringent requirements of the global medical industry. Our products excel in critical medical environments with the following key advantages
![[Solar Control System Glass Panel]](https://icdn.tradew.com/file/202410/1576316/jpg/8209140.jpg)
[Solar Equipment Screen Glass Solutions]
As a leading global manufacturer of custom tempered glass panels, we focus on providing customized high-performance solutions for key applications such as solar photovoltaic controllers, household solar systems, energy storage devices, portable mobile power supplies and photovoltaic energy storage systems. Our tempered glass panels use cutting-edge technology and meet strict safety standards to protect LCD screens in these harsh environments.
![[Charging Station Customized Glass Solutions]](https://icdn.tradew.com/file/202410/1576316/jpg/8343446.jpg)
![[Charging Station Customized Glass Solutions]](https://icdn.tradew.com/file/202410/1576316/jpg/8209141.jpg)
[Charging Station Customized Glass Solutions]
As an IATF 16949 certified automotive grade tempered glass manufacturer, we focus on providing high-performance solutions for electric vehicle charging station displays, combining advanced engineering technology with strict quality control. Our glass panels are carefully designed to meet the rigorous requirements of outdoor environments, ensuring durability, safety and user-friendly operation experience.
![[Smart Switch Glass Panel Solution]](https://icdn.tradew.com/file/202410/1576316/jpg/8343745.jpg)
![[Smart Switch Glass Panel Solution]](https://icdn.tradew.com/file/202410/1576316/jpg/8209142.jpg)
[Smart Switch Glass Panel Solution]
[Smart Switch Glass Panel Solution]
9H Scratch Resistant Tempered Glass Panel for 86mm Smart Touch Light Switch - Aluminosilicate Glass with 3M VHB Tape
Invisible Protection, Superior Control For smart switch manufacturers and system integrators designing high-end home automation, hotel controls and commercial panels,Our carefully crafted glass panels last 3x longer than standard panels (proven over 500,000 touches).
![[Customized Glass Manufacturing Solutions]](https://icdn.tradew.com/file/202410/1576316/jpg/8343744.jpg)
![[Customized Glass Manufacturing Solutions]](https://icdn.tradew.com/file/202410/1576316/jpg/8209143.jpg)
[Customized Glass Manufacturing Solutions]
We have advanced glass manufacturing facilities: CNC/laser cutting and edge polishing, precision CNC machining, glass laser cutting, fully automatic hot bending machine and flip polishing equipment, precision milling countersunk holes and blind holes, precision edge molding, multi-level step surface processing, complex curved glass molding, to meet the strict design requirements of customized glass panel applications from consumer electronics to medical/industrial fields.
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
