Ordinary protective glass causes polarization distortion and damages uniform AR/VR imaging effect
Custom Broadband AR Sapphire Protective Cover for AR/VR HMD Eyepiece Optics
Item specifics
- Material
- Single Crystal Sapphire (Al₂O₃)
- Optical Feature
- Low Birefringence
- Hardness
- Mohs 9
- Thickness Range
- 0.2mm–2.5mm
- Surface Finish
- Grade 000 Optical Polish
- Coating
- Custom Broadband AR Coating
- Machining
- CNC Micro Machining, Contour & Chamfer
- Application
- AR/VR HMD Eyepiece Optical Module
- Operating Temp
- -40℃ ~ +85℃
- Supply
- Prototype Sampling & Mass OEM
Review
Description
Wearable AR/VR Optical Components
Ultra-Thin Broadband AR Sapphire Protective Cover for AR VR Eyepiece Optics | Low Birefringence Single Crystal Sapphire Window
Felix Glass manufactures custom ultra-thin low birefringence single crystal sapphire protective covers for consumer and industrial AR/VR HMD eyepiece optics. Our optical-grade sapphire substrate features Mohs 9 extreme surface hardness, effectively preventing scratches during assembly and end-user daily operation. We provide customizable broadband anti-reflection coating to suppress stray light, reduce ghost reflection and boost light transmittance. Available thickness covers 0.1mm~0.5mm, supporting precision CNC micro-shape machining, edge chamfer and tailored optical specifications. Widely adopted in next-generation AR wearable display, industrial AR imaging modules and VR head-mounted eyepiece systems. We offer prototype validation and stable large-volume OEM manufacturing to global wearable optics designers and module manufacturers.
Engineering pain points we resolve
Core Pain Points Facing AR/VR Optical Engineers
Thin optical substrates are vulnerable to scratches during assembly and daily end-user usage
Standard optical coatings trigger high surface reflection, lowering display contrast and visual experience
Few suppliers deliver ultra-thin sapphire panels with consistent optical uniformity and low birefringence control
Direct engineering overview
Advantages of Felix Glass Low Birefringence Sapphire Eyepiece Cover
We select imaging-grade low birefringence single crystal sapphire as base material, eliminating polarization distortion risks which commonly exist in ordinary optical glass. The Mohs Grade 9 hardness offers superior wear resistance to protect internal eyepiece optical elements. Custom broadband AR coating optimizes transmittance within target wavelength band, suppress ghost image and surface reflection for clearer AR/VR visuals. We support ultra-thin wafer processing starting at 0.1mm thickness, satisfying compact HMD lightweight design requirements. All manufacturing processes are finished inside Class 100 dust-free workshop to guarantee consistent optical parameters batch by batch.
Low Birefringence Imaging-Grade Sapphire
Stable polarization performance, prevents distortion for wearable imaging optics.
Custom Broadband AR Anti-Reflection Coating
Improve light transmission, reduce stray light and eliminate ghost reflection.
0.1mm~0.5mm Ultra-Thin CNC Machining
Micro contour cutting, precision edge chamfer for compact AR/VR hardware design.
Engineering specification table
Optical & Mechanical Specifications
| Item | Parameter |
|---|---|
| Base Material | Single crystal optical grade sapphire |
| Birefringence Level | Low birefringence grade for imaging systems |
| Available Thickness | 0.1mm / 0.2mm / 0.3mm / 0.5mm |
| Functional Coating | Custom broadband AR anti-reflection coating |
| Surface Standard | Optical grade, low surface defects |
| Target Application | AR / VR HMD eyepiece, wearable imaging optical module |
Custom processing support
One-Stop Customization Service for AR/VR Sapphire Components
We provide full custom manufacturing service strictly following customer DXF/DWG engineering drawings. Services include ultra-thin sapphire wafer slicing, CNC micro-shape cutting, precision edge chamfering, multi-layer vacuum broadband AR coating, ultrasonic cleaning and full optical parameter testing. Our optical engineering team can carry out coating spectrum customization, structural DFM optimization and reliability simulation according to your wearable device working environment. We accept small batch prototype sampling for pre-project verification and scalable mass OEM production for formal product launch.
- Custom outline micro CNC machining according to technical drawings
- Precision edge chamfer & black light shielding printing (optional)
- Tailored broadband AR vacuum coating for target wavelength band
- Full optical inspection including birefringence, transmittance and surface quality
In-house manufacturing workflow
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Complete Production Process in Class 100 Dust-Free Workshop
Ultra-Thin Sapphire Wafer Slicing
Precision slicing to reach target thickness starting from 0.1mm.
Double-Sided Optical Polishing
Ultra-precision polishing to guarantee surface flatness and low defects.
CNC Micro Contour Machining
Cut irregular outlines, micro holes and chamfer as drawings required.
Broadband Vacuum AR Coating
Deposit customized anti-reflection film inside vacuum coating machine.
Optical Testing & Dust-Free Packing
100% inspection of birefringence, transmittance and appearance before delivery.
Target customers & application scenarios
Main Target Buyers & Project Types
Consumer AR/VR Brand Manufacturers
R&D teams for lightweight head-mounted display and wearable consumer devices.
Industrial AR Optical Module Suppliers
Industrial augmented reality equipment, machine vision and wearable inspection devices.
Optical Design Institutes & R&D Labs
Engineers need low birefringence sapphire samples for imaging system verification.
Why choose Felix Glass
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Core Competitive Advantages
19+ Years Precision Optical Manufacturing
Specialized in custom single crystal sapphire optical components for high-end imaging systems.
Self-Operated Vacuum Coating Workshop
Independent broadband AR coating development without outsourcing, flexible wavelength customization.
Fast Prototype Sampling Service
Short lead time for AR/VR pre-project prototype validation.
Strict Optical Parameter Inspection
Focused birefringence & transmittance testing for imaging-grade sapphire products.
Overseas Wearable Optics Project Experience
Rich experience serving global AR/VR optical module developers and OEM customers.
Related sapphire & wearable optical components | Theme cluster internal links
Internal Links For Sapphire & Wearable Optical Product Cluster
Buyer FAQ
Frequently Asked Questions
Can you fabricate ultra-thin sapphire eyepiece cover based on customer engineering drawings?
Yes, we fully support CNC custom shape, edge treatment and broadband AR coating strictly according to your DXF/DWG technical files.
How long is the prototype sample lead time?
Standard sample production cycle: 8~13 working days after drawing and specification confirmation.
Why low birefringence sapphire is essential for AR/VR eyepiece optics?
Low birefringence sapphire avoids polarization distortion, ensuring consistent, uniform imaging quality for wearable display optical path.
What wavelength range can your broadband AR coating cover?
We customize AR coating spectrum according to customer requirements, covering visible band for consumer and industrial AR/VR imaging systems.
Action stage
Send Your Optical Drawings For Custom Technical Quotation
Share your engineering drawings, target thickness, coating spectrum specifications and expected order quantity. Our professional optical engineering team will design low birefringence sapphire eyepiece cover solution and provide formal quotation for your AR/VR wearable project within 24 hours.
