Custom Hemispherical Optical Dome | Sapphire BK7 Fused Silica Dome

✅ Get Your Custom Engineering Review & Quote Within 1–2 Business Days Our custom AR coated sapphire / BK7 hemispherical optical domes are high-precision optical covers engineered for subsea ROV underwater cameras, pressure housings, industrial sensors and laser systems. Deliver stable optical performance in harsh marine environments, featuring high light transmittance, low image distortion, seawater corrosion resistance and superior surface hardness.

Material options: Sapphire / BK7 / Fused Silica / K9 Custom coatings: AR / IR / UV Anti-Reflective, Anti-fog coating optional Lead time: Sample and bulk lead times are confirmed after drawing and specification review.

This is custom non-stock optical dome. Quotation requires your engineering drawing and specifications.

✅ Key Features

• Dual Material Selection: Mohs 9 single-crystal sapphire for deep-sea high-pressure & scratch-resistant service; BK7 glass for cost-sensitive optical projects
• AR Coating Performance: Multi-layer anti-reflective coating delivers high light transmittance, reduces surface reflection and imaging glare
• Full Customization: Custom OD 5–200mm, wall thickness, spherical curvature and sealing edge finishing to match your housing assembly
• Harsh Environment Ready: Low optical distortion, excellent scratch resistance and long-term stability for subsea / underwater working conditions
• Precision Edge Machining: Chamfer & flat edge options for reliable gasket sealing in pressure-resistant underwater housings

✅ Common Applications

• Underwater ROV, subsea inspection & deep-sea camera housings
• Laser systems & optical instruments
• Industrial sensors & automation equipment
• Surveillance & security optical systems
• Medical devices and scientific research

All hemispherical domes go through full quality inspection: dimensional tolerance verification, surface scratch inspection and optical transmission testing before delivery. We support paid prototype sampling and mass OEM manufacturing, with flexible schedules for small batch and large volume projects.

Send your engineering drawing, working pressure, dimension & coating requirements to get a customized quotation. Our optical engineering team can assist you with material selection and dome structure feasibility evaluation for your underwater or industrial vision project.

✅ AR coating for high light transmittance 

✅ Sapphire / BK7 optional for pressure & cost requirements

 ✅ Custom diameter, curvature and sealing edge processing 

✅ Technical review & custom quotation after specification review

✅ 100% full optical & dimensional inspection before shipment

Please submit your drawing & specs to start your RFQ now.