Mohs 9 Surface
Single crystal sapphire helps resist abrasion from sand, cleaning, handling and outdoor service conditions.
✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes






Felix Glass Co., Limited manufactures custom sapphire optical dome components for engineers who need a hard, clear and chemically stable protective cover for cameras, sensors, ROV equipment, aerospace assemblies and industrial optical systems. A sapphire optical dome is selected when a flat window or standard glass cover does not provide enough scratch resistance, pressure durability, heat stability or optical protection. The dome shape helps protect the optical path while supporting wide-angle viewing or compact sensor enclosure designs. Single crystal sapphire helps resist abrasion from sand, cleaning, handling and outdoor service conditions. Polishing and optional AR coating are matched to the required visible, NIR or selected IR use case. Diameter, radius, wall thickness, edge detail, coating and inspection criteria can be reviewed before production. The standard material is synthetic single-crystal sapphire, also known as Al2O3 corundum. BK7 or K9 optical glass can be discussed as a secondary custom option when the project does not require sapphire hardness. Use conditions should define the final dome size, coating and inspection standard. The same material family can serve different environments when the geometry and coating are specified correctly. For subsea imaging, pressure, corrosion, sealing and optical clarity must be considered together. For airborne or defense-related equipment, drawings often define material, coating and inspection requirements. For inspection cameras and monitoring systems, sapphire helps protect exposed optics from abrasion and cleaning. Diameter, radius, wall thickness, flange or edge form, optical zone and mounting method are checked. Sapphire blank size, machining allowance and coating route are planned according to the application. Diamond tooling and controlled polishing are used to form the dome and improve optical clarity. AR, AF, AG or other coatings are selected by wavelength range, cleaning method and service environment. Finished parts are checked for dimensions, surface quality, coating appearance and shipment protection. The original listing supports small custom orders and larger-volume production. For a practical quotation, send your dome drawing, target quantity, material requirement, coating request, tolerance, surface quality, working environment and any inspection standard. Sample timing and bulk delivery depend on geometry, coating and inspection requirements. For simple projects, Felix Glass can review feasibility quickly; for complex optical assemblies, engineering discussion helps avoid overbuilding the part. The cover faces abrasion, repeated cleaning, salt fog, heat, pressure, outdoor exposure or long-service optical protection requirements. The part needs optical clarity but does not require sapphire hardness or severe environment resistance. The optical system has a defined wavelength band, reflection target, fingerprint exposure or glare concern. Yes. The part can be reviewed by drawing for diameter, spherical radius, wall thickness, edge detail and optical zone. No. Transmission depends on wavelength range, coating design, material thickness and inspection method. Share the optical band for review. Sapphire is often selected for underwater optical covers because it offers hardness, corrosion resistance and stable optical protection when the housing design is correct. Please provide drawing, material, size, radius, thickness, coating, quantity, application environment and inspection requirements. Share the application, drawing, coating target and quantity. Felix Glass can review manufacturability, inspection points and quotation details for your custom sapphire optical dome project.Custom Sapphire Optical Dome for Harsh Environment Imaging
What This Mohs 9 Sapphire Cover Is Designed to Solve
Mohs 9 Surface
Clear Optical Path
Drawing-Based Build
Material and Coating Details for Engineering Review
Key Product Specifications for a Custom Sapphire Dome
Product type Custom sapphire optical dome, hemispherical or project-specific spherical cover Model reference FG-SAPPHIRE-002 Material Synthetic single-crystal sapphire; BK7/K9 optical glass available as a secondary custom option Functional coating AR, AF, AG and project-specific multilayer coating by optical band and use environment Manufacturing support Custom diameter, radius, wall thickness, edge form, polish level and inspection requirements Inspection focus Dimensional check, surface appearance, optical clarity and coating review before shipment Where AR Coated Sapphire Domes Are Commonly Used

ROV and Marine Cameras

Aerospace and EO/IR Sensors

Industrial Vision Equipment
How Felix Glass Reviews a Sapphire Optical Dome RFQ
Drawing Review
Material Planning
Grinding and Polishing
Coating Review
Inspection and Packing
Custom Options from Prototype Sampling to Batch Orders
When to Choose Sapphire Instead of Standard Optical Glass
Choose Sapphire When
Review BK7 or K9 When
Confirm Coating When
Internal Links for Faster Product Comparison
Questions Before Ordering a Mohs 9 Sapphire Optical Dome
Can the dome diameter and radius be customized?
Does AR coating always reach the same transmittance?
Is sapphire suitable for underwater ROV cameras?
What information helps speed up a quotation?
Send Your Sapphire Dome Drawing for Practical Engineering Feedback
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQWe 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.

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
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.
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.