Custom BK7 Underwater Optical Glass Dome
Felix Glass specializes in manufacturing fully customized BK7 underwater optical glass domes for underwater diving cameras, industrial ROV remotely operated vehicle systems, deep-sea exploration imaging equipment, and long-term marine surveillance monitoring devices.
Our underwater dome adopts reinforced pressure-resistant hemispherical structural design, combining high-transmittance optical polishing and precision sealing edge processing, delivering clear low-distortion underwater imaging and stable long-term waterproof sealing performance in both shallow coastal water and high-pressure deep-sea harsh marine environments. We provide full one-stop OEM customization covering dome dimension, spherical curvature, multi-layer functional coating and mounting sealing interface to match all kinds of underwater camera housing structures.
Typical Technical Specifications
All optical and structural parameters can be fully customized per customer engineering drawings and deep-sea pressure rating requirements.
Item / Typical Custom Standard
Base Substrate Material: Standard BK7 optical glass; fused silica / quartz optional for high-performance deep sea
Custom Diameter Range: 10–300mm customizable outer size
Wall Thickness & Curvature: Fully tailored for target deep-sea pressure resistance
Functional Coating: AR anti-reflective, anti-fog, anti-scratch hard coating optional
Optical Surface Quality: Custom polished grade to reduce underwater imaging distortion
Edge Finish: Precision chamfered edge for tight waterproof assembly sealing
Pressure Structure: Reinforced thick-wall design for specified deep sea pressure levels
Core Product Advantages
• Ultra-high light transmittance BK7 substrate ensures crystal clear underwater imaging
• Reinforced hemispherical pressure-resistant structure adapts to deep-sea high-pressure working conditions
• Precision machined sealing edge, perfect fit with camera housing to eliminate water leakage risk
• Ultra-precision optical polishing minimizes light refraction distortion under water
• Optional multi-layer anti-fog & anti-scratch coating resists seawater corrosion and surface fogging
• Full OEM structural, size and coating customization for unique marine optical equipment
• 100% full dimensional & optical performance inspection before shipment
• Flexible low MOQ support for single-piece prototype R&D testing
Custom Processing Options
1. Material Customization: Standard BK7 optical glass for general marine use; fused silica or quartz for high-temperature, high-pressure deep-sea working environments.
2. Structural Customization: Custom outer diameter, wall thickness and spherical curvature with reinforced pressure-resistant wall design based on deep-sea pressure demands.
3. Coating Customization: Single/double side AR anti-reflective coating, anti-fog coating and scratch-resistant hard coating to eliminate stray light, fogging and surface abrasion.
4. Edge Finishing Customization: Precision chamfer polishing to achieve stable, long-term waterproof sealing with camera housing components.
5. Engineering Custom Service: Complete optical design support from prototype development to mass volume production according to customer technical drawings and specifications.
Typical Application Scenarios
This waterproof BK7 optical dome serves as core protective optical window for all marine underwater optical equipment, covering full high-value industrial scenarios:
• Consumer diving underwater cameras & portable underwater imaging systems
• Industrial ROV remotely operated vehicle optical detection & navigation systems
• Deep-sea scientific exploration photography and underwater mapping equipment
• Offshore marine long-term surveillance & real-time monitoring camera devices
• Underwater pipeline flaw inspection, underwater hull detection optical instruments
Engineering Challenges & Targeted Solutions
Challenge 1: Low optical clarity and severe image distortion under seawater
Solution: Adopt high-purity high-transmittance BK7 optical glass substrate with ultra-precision spherical polishing, effectively reduce light refraction distortion and maintain stable clear underwater imaging.
Challenge 2: Water leakage risk under deep-sea high pressure
Solution: Reinforced thick-wall pressure-resistant dome structure matched with precision chamfered sealing edge, realizes tight seamless assembly with camera housing for long-term waterproof performance.
Challenge 3: Internal lens fogging and surface degradation under humid marine environment
Solution: Optional anti-fog coating and hard anti-scratch protective coating, prevents internal fogging and seawater surface corrosion to extend dome service life.
OEM Manufacturing Capability
Felix Glass provides one-stop OEM & ODM customized processing service for deep-sea underwater optical domes. Engineering support is available from prototype development to volume production according to customer drawings or technical specifications.
Our full in-house production workflow includes BK7 glass blank cutting, ultra-precision CNC spherical polishing, multi-layer functional vacuum coating, precision sealing edge finishing and strict optical transmittance & dimensional performance testing.
We support single-piece prototype sampling, small trial batches and large-scale mass OEM production. The whole production system complies with ISO9001 quality control standard, all raw optical glass materials are RoHS compliant, with complete batch production traceability.
Complete production technological flow: Glass Blank Cutting → Reinforced Spherical CNC Polishing → Multi-Layer AR/Anti-Fog Vacuum Coating → Optical Transmittance & Pressure Compatibility Test → Sealing Edge Precision Finishing → Dust-Free Anti-Oxidation Vacuum Pack
Quality Assurance & Manufacturing Standards
Our whole production line follows ISO9001 certified standardized quality management system, all optical raw substrates meet RoHS environmental compliance requirements. Every finished underwater dome undergoes strict multi-index testing before shipment: dimensional tolerance inspection, full optical appearance defect screening, optical transmittance performance verification, and waterproof sealing compatibility test with camera housing assemblies.
Why Choose Felix Glass
• 29+ years professional optical glass dome manufacturing industrial experience
• Independent dedicated underwater optical engineering R&D team to solve deep-sea optical pain points
• Stable long-term OEM & ODM customized production capacity for global marine equipment clients
• High-precision five-axis CNC optical polishing equipment for consistent spherical surface quality
• Complete supply chain coverage from prototype trial testing to large mass production
• Direct factory supply with full-process quality control and reliable on-time delivery guarantee
Production & Delivery Lead Time
Single prototype sample lead time: 7–15 working days
Mass OEM production lead time is determined by custom technical specifications and total order quantity.
All finished underwater optical domes will pass full multi-index optical & structural inspection before delivery.
FAQ
1. What material is standard for deep-sea underwater optical dome?
BK7 optical glass is our standard substrate; fused silica or quartz can be selected as alternative material for high-temperature, ultra-deep high-pressure marine working conditions.
2. Can we customize coating to prevent lens fogging under water?
Yes, we provide optional anti-fog coating matched with AR anti-reflective coating, which effectively eliminates internal fogging caused by seawater temperature difference.
3. Is prototype testing available with low minimum order quantity?
We support MOQ as low as 1 piece for prototype performance testing, no large batch order restriction for early-stage equipment R&D verification.
4. Does every underwater dome get full inspection before shipment?
Yes, each finished dome will complete dimensional tolerance check, surface defect screening, transmittance testing and waterproof compatibility testing under our ISO9001 quality inspection system.
Please send us your technical drawings, required dome dimension, target deep-sea pressure rating, coating demand and equipment application details. Our professional underwater optical engineering team will provide tailored marine optical technical solution and competitive quotation within 24 hours.
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