Mohs 9 Hardness
Supports scratch and wear resistance for exposed optical covers and window lids.
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Aerospace Grade Sapphire Optical Covers | Custom Sapphire Window Lids
| Share | |
|---|---|
| Categories | Sapphire Optical Dome |
| Brand | FELIX GLASS optical glass Manufacturing base |
| Model | FG- SOC-BLK-001 |
| Material | High-Purity Single-Crystal Sapphire (Aerospace Grade) |
| Spectral Range | 150nm ~ 5.5μm (UV-Vis-Mid IR) |
| Mohs Hardness | 9.0 |
| Operating Temperature | -270℃ ~ 1600℃ |
| Pressure Resistance | Customized for Deep-Sea / High-Altitude Use |
| Surface Quality | 20/10, 10/5 Military & Aerospace Grade |
| Dimensional Tolerance | ±0.01mm ~ ±0.03mm |
| Available Coating | IR / UV / Broadband Anti-Reflection Coating |
| Shape & Structure | Hemispherical / Full Spherical / Customized Edge |
| Mounting Type | Straight Edge / Slanted Edge / Flange Mount |
| Application Scenario | Aerospace, Defense, Deep-Sea, High-Speed Optics |
| FOB port | SHENGZHEN SHANGHAI GUANGZHOU |
| Terms of Payment | L/C, D/A, D/P, Western Union |
| Download |  |
Detail Information
Aerospace-grade sapphire optical cover
Custom Sapphire Window Lids for Aerospace, Defense and Deep-Sea Optical Systems
Hong Kong Felix Glass Co., Limited manufactures drawing-based sapphire optical covers, window lids and dome-style protective optics from high-purity single-crystal sapphire. This product keeps the original engineering focus: a hard, thermally stable and optically useful protective barrier for satellites, aircraft, UAVs, underwater vehicles, EO/IR systems and high-temperature industrial observation assemblies.
Send Sapphire Cover Drawing
Sapphire Optical Components category context
Direct answer
What Is an Aerospace Grade Sapphire Optical Cover?
An aerospace grade sapphire optical cover is a precision sapphire component used to protect sensors, cameras, optical assemblies or inspection ports while still allowing controlled optical transmission. Sapphire is selected when the cover may face abrasion, thermal cycling, pressure load, seawater exposure or harsh handling conditions that ordinary glass or polymer covers may not tolerate as well.
Wide Temperature Use
The original requirement range is retained: -270 degrees C to 1600 degrees C for engineering review.
UV to Mid-IR Range
Material selection can support 150 nm to 5.5 micrometer optical design targets.
Original specification order retained
Key Sapphire Optical Cover Specifications
The following specification points preserve the original product information while making it easier for US buyers and engineering teams to scan.
| Material | High-purity single-crystal sapphire, aerospace-grade project review available. |
|---|---|
| Spectral Range | 150 nm to 5.5 micrometer, covering UV, visible and mid-IR design discussions. |
| Mohs Hardness | 9.0, suitable for exposed optical protection and wear-resistant cover designs. |
| Operating Temperature | -270 degrees C to 1600 degrees C, depending on design, assembly and service conditions. |
| Pressure Resistance | Customized for deep-sea, high-altitude and high-load optical use cases. |
| Surface Quality | 20/10 or 10/5 scratch-dig targets can be reviewed for military and aerospace-grade projects. |
| Dimensional Tolerance | Common project range: +/-0.01 mm to +/-0.03 mm, subject to size and geometry. |
| Available Coating | IR, UV and broadband anti-reflection coating options for selected wavelength bands. |
| Shape and Structure | Hemispherical, full spherical, window lid, edge-custom and drawing-based structures. |
| Mounting Type | Straight edge, slanted edge and flange-mount design support. |
| Application Scenario | Aerospace, defense, deep-sea, high-speed optics and demanding optical assemblies. |
Product forms
Sapphire Window Lids, Dome Covers and Custom Edge Structures
Felix Glass can review the cover geometry around mounting method, optical path, pressure direction, coating target and final inspection standard.
Window Lid Profiles
Flat and shallow cover forms for sensor protection, optical ports and compact assemblies.
Custom Edge Work
Straight, slanted and flange-related edge details can be reviewed from the drawing.
Dome-Style Covers
Hemispherical and spherical options support optical dome and sensor cover designs.
Interest
Why Sapphire Is Used for Protective Optical Covers
Sapphire combines high hardness, useful optical transmission, chemical resistance and thermal stability. For custom sapphire optics, the design should be matched to actual wavelength, load, seal, housing and inspection requirements rather than treated as a one-size-fits-all part.
Environmental Resistance
Supports optical cover projects exposed to particles, seawater, chemicals, UV aging or thermal cycling.
Optical Performance
Can be prepared for visible, UV, near-IR and selected mid-IR transmission requirements.
Precision Engineering
Tolerance, surface quality, coating and edge treatment are controlled according to project drawings.
Custom Configurations
Shapes, diameters, thicknesses, coating bands and mounting edges can be reviewed before quotation.
Desire
Sapphire Cover Compared With Quartz and Acrylic Dome Materials
The comparison below keeps the original material-selection logic while using cautious wording suitable for engineering purchase review.
| Property | Sapphire Cover | Quartz Glass Dome | Plastic or Acrylic Cover |
|---|---|---|---|
| Mohs Hardness | 9.0, strong scratch resistance | About 7.0, moderate scratch resistance | About 3.0 to 4.0, easier to scratch |
| Temperature Range | -270 degrees C to 1600 degrees C for design review | Often used for high-temperature optical parts | Typically limited for elevated-temperature use |
| Pressure Design | Can be engineered for high-pressure projects | Useful for selected pressure windows | Usually better for lower-load covers |
| Spectral Use | UV, visible and selected mid-IR design range | UV, visible and near-IR applications | Mainly visible-light applications |
| Service Environment | Good fit for abrasion, chemical and harsh outdoor exposure | Good chemical and thermal stability in many uses | Can age or mark faster in demanding service |
Applications
Application Areas for Custom Sapphire Optical Components
This product can be considered for sapphire optical components where mechanical protection, optical access and environmental stability need to be balanced.
Aerospace and UAV Optics
Protective covers and dome-related parts for airborne optical assemblies and sensor windows.
Defense EO/IR Systems
Window lids and protective optics for fielded imaging, tracking and observation modules.
Deep-Sea Equipment
Sapphire covers for ROV, AUV, subsea camera and observation window projects.
High-Temperature Viewports
Protective optical access for furnaces, kilns and process-monitoring equipment.
Manufacturing support
Custom Sapphire Window Lid Production Workflow
Felix Glass reviews each custom sapphire cover around the drawing, material blank, machining allowance, optical finish, coating route and final inspection items.
Drawing Review
Confirm shape, size, tolerance, edge, mounting method and application environment.
Sapphire Machining
Prepare blanks, CNC grind profiles and polish optical surfaces according to the project plan.
Coating Selection
Review UV, IR or broadband AR coating needs by wavelength and angle of incidence.
Inspection and Packing
Check dimensions, surface quality, visual condition and packing requirements before shipment.
Trust signals
Quality Checks for Sapphire Optical Covers
Inspection planning can include surface review, dimensional checks, coating review and optical performance testing. Final criteria should be confirmed through the buyer's drawing, use environment and acceptance standard.
Surface Quality Review
Scratch-dig, chips, edge condition and polish quality can be inspected before packing.
Dimensional Verification
Diameter, thickness, profile, flange and special geometry can be measured against drawings.
Optical Review
Transmission and coating targets can be checked when required by the project.
FAQ
Questions About Aerospace Grade Sapphire Window Lids
Can the sapphire optical cover be made from a customer drawing?
Yes. Felix Glass can review custom drawings for size, thickness, edge form, coating, tolerance and inspection requirements.
Can the part be used as a sapphire optical dome?
Depending on geometry, the same sapphire material and machining route may support dome, lid and protective window structures. The final classification depends on drawing geometry and mounting requirements.
Can AR coating be added?
IR, UV and broadband anti-reflection coatings can be reviewed according to wavelength band, angle, part size and surface geometry.
What information is needed for a quotation?
Please provide drawing, quantity, size, thickness, shape, tolerance, surface quality, coating requirement, wavelength range and use environment.
Related links
Related Sapphire Optics and Optical Dome Resources
Use these internal resources to compare the current sapphire cover with related product groups and technical guidance.
Action
Request Engineering Review
Request Review for a Custom Sapphire Optical Cover
Share your drawing, wavelength range, coating target and operating environment. Felix Glass can review feasibility for aerospace-related, deep-sea, defense, high-temperature and industrial optical cover projects.
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Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
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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.
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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...
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- *Title
- *Content
