Pressure-Oriented Geometry
Diameter, thickness, edge profile, and clear aperture can be reviewed for projects from approximately 100 m to 6000 m working depth, subject to assembly design and qualification testing.
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Waterproof Sapphire Viewport for Underwater Detection Equipment
| Share | |
|---|---|
| Categories | Sapphire Optical Lenses |
| Brand | FELIX GLASS optical glass Manufacturing base |
| Model | FG-SAPP-VP-UNDERWATER-001 |
| Pressure Resistance Depth | Custom 100m ~ 6000m Underwater Working Depth |
| Surface Treatment | Double-Sided Optical Polishing, Optional AR Coating |
| Sealing Structure | Precision Ground Flange for O-Ring Waterproof Assembly |
| Corrosion Resistance | Salt Spray & Seawater Corrosion Proof |
| Available Sizes | Custom Diameter 10mm–500mm, Custom Curvature |
| Optical Feature | High UV-Vis-NIR Transmittance, No Distortion |
| Custom Service | OEM ODM Size, Curvature & Coating Customization |
| FOB port | SHENGZHEN SHANGHAI GUANGZHOU |
| Terms of Payment | L/C, D/A, D/P, Western Union, T/T |
| Download |    |
Detail Information
Underwater optical access
Product Introduction
This waterproof sapphire viewport is made from single-crystal C-plane sapphire for underwater cameras, ROV detection systems, marine monitoring instruments, and other sealed optical assemblies. The material combines a Mohs 9 surface with optical transmission across UV, visible, and near-infrared bands, helping the exposed window resist sediment abrasion while maintaining a clear optical path.
Felix Glass Co., Limited supports drawing-based dimensions, edge geometry, sealing interfaces, and optional anti-reflection coatings. The viewport can be developed around working depth, clear aperture, housing design, and the wavelengths used by the camera or detector.
Mohs 9 sapphire
Sealed subsea assemblies
UV-Vis-NIR optical path
Interest · Direct answer
Why Sapphire Supports Subsea Optical Access
A sapphire viewport is considered when an exposed optical surface must work in a high-pressure, abrasive, or corrosive environment. Compared with ordinary glass, sapphire provides a harder contact surface and stable material behavior in seawater. Final pressure capability, however, depends on the complete assembly: viewport diameter, thickness, unsupported span, edge finish, housing material, seal design, installation preload, and verification method must be reviewed together.
Engineering note: A requested depth is a system requirement, not a stand-alone material rating. Share the housing drawing and validation standard so the viewport can be evaluated as part of the sealed assembly.
Interest · Evaluation points
Core Technical Advantages
Marine Corrosion Resistance
Single-crystal sapphire is suitable for contact with seawater and salt-fog environments when the surrounding housing and sealing materials are also selected for marine service.
Optical Transmission
Double-sided optical polishing supports camera, illumination, sensing, and monitoring paths. Optional AR coating can be reviewed around the operating wavelength and incidence angle.
Scratch Resistance
The Mohs 9 surface helps reduce damage from suspended particles, handling, and abrasive contact that could degrade image quality over time.
Interest · Drawing inputs
Customizable Specifications
| Item | Available Project Input |
|---|---|
| Shape | Round, oval, rectangular, or curved-surface viewport |
| Size | Typical custom diameter or side length from 5 mm to 400 mm; project range may extend to 500 mm after review |
| Thickness | Typical custom thickness from 2 mm to 60 mm, based on geometry and assembly requirements |
| Edge and mounting | Chamfer, precision-ground flange interface, sealing groove, or mounting holes where feasible |
| Surface | Double-sided optical polish with specified clear aperture and cosmetic requirement |
| Coating | Optional wavelength-specific or broadband AR coating after application review |
Desire · Assembly reliability
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Sealing and Integration Guidance
Define the Load Case
Provide working depth, proof pressure, pressure cycles, temperature range, and the required safety or qualification basis.
Review the Support
Identify clear aperture, unsupported span, seating surface, retaining method, and housing material.
Specify the Seal
Share O-ring type, groove dimensions, compression target, surface finish, and installation method.
Plan Verification
Agree dimensional, optical, leak, and pressure checks before manufacturing begins.
Desire · Application fit
Wide Application Scenarios
- ROV and underwater robot camera windows
- Subsea pipeline inspection and detection equipment
- Marine environmental monitoring and survey instruments
- Deep-sea sampling systems and observation housings
- Underwater lighting, imaging, and optical sensor ports
Application suitability should be confirmed against the optical band, pressure profile, housing design, seawater exposure, cleaning method, and maintenance interval.
Desire · Faster feasibility review
Selection Checklist for OEM Projects
Working and proof depth or pressure
Outside diameter and clear aperture
Thickness and allowable edge geometry
Operating wavelength and incidence angle
Surface quality and transmitted wavefront needs
Housing, O-ring, and retaining method
Temperature and seawater exposure profile
Prototype and production quantities
Desire · Supplier capability
Felix Glass Custom Service
Felix Glass Co., Limited supports prototype trials and batch OEM/ODM production. Engineering review can cover dimensions, curvature, edge treatment, clear aperture, sealing interface, and optional coating. Inspection planning can include agreed dimensional, surface, optical, and pressure-related checks based on the project specification.
Drawing Review
Clarify critical dimensions, datums, tolerances, and acceptance points.
Custom Processing
Coordinate shaping, polishing, edge work, and optional coating.
Prototype to Batch
Use sample feedback to refine repeat-order requirements.
Desire · Documented acceptance
Quality Review and Inspection
Dimensional Checks
Outside diameter, thickness, clear aperture, edge features, and mounting details can be measured to the approved drawing.
Surface and Optical Checks
Polish condition, visible defects, flatness or wavefront-related requirements, and coating region can be evaluated as specified.
Assembly-Related Validation
Leak or pressure testing can be discussed when the fixture, pressure profile, duration, medium, and acceptance criteria are defined.
Desire · Buyer questions
Frequently Asked Questions
Can the viewport be designed for 6000 m operation?
Projects up to approximately 6000 m may be reviewed, but suitability depends on diameter, thickness, support geometry, sealing, material condition, safety basis, and system-level qualification.
Can Felix Glass machine an O-ring interface?
Precision edge and flange features can be reviewed from the housing and seal drawing. Feasibility depends on dimensions, tolerances, and edge-strength considerations.
Is AR coating recommended for underwater imaging?
It may help manage reflection, but the wavelength band, angle, immersion environment, cleaning method, and durability requirements should be defined first.
What should be sent for quotation?
Provide the drawing or target dimensions, working depth, housing concept, optical band, surface requirements, quantity, and required inspection or pressure-test conditions.
Action · Start with your system requirements
Inquiry CTA
Send the working depth, viewport drawing, housing and seal details, optical wavelength, quantity, and validation requirements. The engineering team can review manufacturability and identify the information needed for a quotation.
Need Custom Optical Glass Solution?
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.
CONTACT US NOW FOR A QUOTE
We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!
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Learn more from our FAQ
- What is the minimum order quantity for custom precision optical glass components?
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.
- 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?
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.
- Are your optical glass products ISO, CE and RoHS certified?
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.
- Do you offer one-stop custom optical glass processing services?
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.
CONTACT US NOW FOR A QUOTE
We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.
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