Mohs 9 Hardness
Supports scratch and wear resistance for exposed optical covers and window lids.
Aerospace Grade Sapphire Optical Covers | Custom Sapphire Window Lids
group nameSapphire Optical Dome
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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 timeWed, 15 Jul 2026 23:13:03 GMT
Paramtents
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
Packging & Delivery
Size50cm x50cm x30cm
Weight0.5kg / piece
Min Order5 piece
Briefing
Custom sapphire optical covers and window lids for aerospace, defense, deep-sea, EO/IR and high-temperature optical systems.
Detailed
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. 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. The original requirement range is retained: -270 degrees C to 1600 degrees C for engineering review. Material selection can support 150 nm to 5.5 micrometer optical design targets. The following specification points preserve the original product information while making it easier for US buyers and engineering teams to scan. Felix Glass can review the cover geometry around mounting method, optical path, pressure direction, coating target and final inspection standard. Flat and shallow cover forms for sensor protection, optical ports and compact assemblies. Straight, slanted and flange-related edge details can be reviewed from the drawing. Hemispherical and spherical options support optical dome and sensor cover designs. 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. Supports optical cover projects exposed to particles, seawater, chemicals, UV aging or thermal cycling. Can be prepared for visible, UV, near-IR and selected mid-IR transmission requirements. Tolerance, surface quality, coating and edge treatment are controlled according to project drawings. Shapes, diameters, thicknesses, coating bands and mounting edges can be reviewed before quotation. The comparison below keeps the original material-selection logic while using cautious wording suitable for engineering purchase review. This product can be considered for sapphire optical components where mechanical protection, optical access and environmental stability need to be balanced. Protective covers and dome-related parts for airborne optical assemblies and sensor windows. Window lids and protective optics for fielded imaging, tracking and observation modules. Sapphire covers for ROV, AUV, subsea camera and observation window projects. Protective optical access for furnaces, kilns and process-monitoring equipment. Felix Glass reviews each custom sapphire cover around the drawing, material blank, machining allowance, optical finish, coating route and final inspection items. Confirm shape, size, tolerance, edge, mounting method and application environment. Prepare blanks, CNC grind profiles and polish optical surfaces according to the project plan. Review UV, IR or broadband AR coating needs by wavelength and angle of incidence. Check dimensions, surface quality, visual condition and packing requirements before shipment. 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. Scratch-dig, chips, edge condition and polish quality can be inspected before packing. Diameter, thickness, profile, flange and special geometry can be measured against drawings. Transmission and coating targets can be checked when required by the project. Yes. Felix Glass can review custom drawings for size, thickness, edge form, coating, tolerance and inspection requirements. 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. IR, UV and broadband anti-reflection coatings can be reviewed according to wavelength band, angle, part size and surface geometry. Please provide drawing, quantity, size, thickness, shape, tolerance, surface quality, coating requirement, wavelength range and use environment. Use these internal resources to compare the current sapphire cover with related product groups and technical guidance. 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.
Aerospace-grade sapphire optical cover
Custom Sapphire Window Lids for Aerospace, Defense and Deep-Sea Optical Systems
Send Sapphire Cover Drawing
Sapphire Optical Components category context
Direct answer
What Is an Aerospace Grade Sapphire Optical Cover?
Wide Temperature Use
UV to Mid-IR Range
Original specification order retained
Key Sapphire Optical Cover Specifications
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
Window Lid Profiles
Custom Edge Work
Dome-Style Covers
Interest
Why Sapphire Is Used for Protective Optical Covers
Environmental Resistance
Optical Performance
Precision Engineering
Custom Configurations
Desire
Sapphire Cover Compared With Quartz and Acrylic Dome Materials
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
Aerospace and UAV Optics
Defense EO/IR Systems
Deep-Sea Equipment
High-Temperature Viewports
Manufacturing support
Custom Sapphire Window Lid Production Workflow
Drawing Review
Sapphire Machining
Coating Selection
Inspection and Packing
Trust signals
Quality Checks for Sapphire Optical Covers
Surface Quality Review
Dimensional Verification
Optical Review
FAQ
Questions About Aerospace Grade Sapphire Window Lids
Can the sapphire optical cover be made from a customer drawing?
Can the part be used as a sapphire optical dome?
Can AR coating be added?
What information is needed for a quotation?
Related links
Related Sapphire Optics and Optical Dome Resources
Action
Request Engineering Review
Request Review for a Custom Sapphire Optical Cover
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