2.1 High mechanical strength
Sapphire reaches Mohs 9 hardness, outstanding scratch resistance, withstands high water pressure and continuous particle abrasion compared with ordinary optical glass.
Custom Sapphire Optical Dome | Complete Product Range
- group name
- Sapphire Optical Dome
- Min Order
- 1 piece
- brand name
- FELIX GLASS optical glass Manufacturing base
- model
- FG-CAOD-2026
- Nearest port for product export
- Shenzhen, Guangzhou
- Delivery clauses under the trade mode
- FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES
- Acceptable payment methods
- T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Westem Union, Cash, Escrow
- update time
- Thu, 30 Jul 2026 21:44:59 GMT
Paramtents
Material Single Crystal Sapphire, ZnS, ZnSe, BK7/K9 Optical Glass
Shape Hemispherical, Hyper-Hemispherical, Flanged Dome
Coating Option AR Broadband Coating, Anti-Fog Coating, Custom Coatings
Diameter Range Custom OEM 10mm – 350mm
Tolerance Precision Optical Grade, Custom Optical Tolerance
Pressure Resistance Deep Sea High Pressure / Atmospheric Version
Environment Resistance Salt-Fog Resistant, Thermal Shock Resistant
Processing CNC Machining, Edge Chamfering, Polishing
Minimum Order Small Batch Prototype & Mass Production Available
Application Underwater ROV, UAV EOIR, Thermal Imaging, Marine Monitoring
Packging & Delivery
-
Min Order1 piece
Briefing
Custom sapphire & infrared optical domes engineered for underwater, aerospace and thermal surveillance equipment。
Detailed
Felix Glass Co., Limited · Model FG-DOME-001
1. Custom Sapphire Surveillance Optical Dome Overview
Felix Glass manufactures customized single crystal sapphire optical domes, alongside BK7 fused silica, ZnS, ZnSe and germanium infrared domes for deep-sea ROV/AUV, UAV aerospace EO/IR, thermal surveillance, and industrial night vision imaging systems.
We support drawing-based customization including hyper hemispherical, hemispherical, flanged integrated structure, CNC contour machining, edge chamfering, precision polishing and multi-layer broadband AR / BBAR anti-reflection coating services to match multi-spectrum optical requirements.
This product is classified under Optical Dome & Protective Window to match engineer search intent for infrared and underwater optical components.
All data shown are typical reference values. Final material, coating, dimension, optical indicators and tolerances shall be confirmed based on official engineering drawings and project specifications.
Material & optical advantages
2. Core Advantages of Sapphire & Infrared Optical Dome
Our optical dome series solves common engineering challenges including pressure rupture, seawater corrosion, sand abrasion, light attenuation and thermal shock failure under harsh outdoor, marine and airborne operating environments.
2.2 Broad spectrum transmission
Multiple substrate options cover UV, visible light, near infrared, MWIR and LWIR, supporting visible surveillance and long-wave thermal imaging simultaneously.
2.3 Excellent environmental resistance
Strong salt fog corrosion resistance, stable thermal shock performance, suitable for long-term use in deep sea, desert and high-low temperature alternating conditions.
Check more optical components in the Felix Glass product catalog.
Harsh environment adaptability
3. Pressure, Salt Fog & Thermal Shock Resistance
Sapphire optical domes can adapt to extreme working conditions of deep-sea high pressure, offshore salt spray, airborne rapid temperature changes. Different substrates are recommended according to the actual application spectrum and environment.
- Deep sea application: Sapphire material preferred for ultra-high pressure resistance and seawater corrosion resistance.
- Aerospace EO/IR: Sapphire / ZnS domes to meet thermal shock and multi-band transmission requirements.
- Land thermal surveillance: Select ZnS, ZnSe or BK7 according to working infrared wavelength band.
Pressure resistance data is related to wall thickness, diameter and structural design. Formal pressure test report can be provided for project verification.
Drawing-based precision manufacturing
4. Custom CNC Machining & Polishing Standards
Felix Glass accepts customer CAD engineering drawings to process various dome structures, including hemispherical, hyper hemispherical, half sphere, integrated flanged dome, customized wall thickness and installation positioning structure.
Dome contour machining
Custom spherical radius, outer diameter, inner diameter and wall thickness controlled according to optical design requirements.
Edge processing
Precision edge chamfering, flat edge, sealing step processing to facilitate assembly and glue sealing.
Optical coating service
Single-band AR, broadband BBAR anti-reflection coating to reduce surface reflection and improve light transmittance.
Dimensional tolerance control
High-precision grinding and polishing, strict surface quality inspection, tolerance standard negotiable according to project demand.
More manufacturing capability information available on About Us.
Optical performance
5. Multi-Band Light Transmittance Performance
Single crystal sapphire supports broadband transmission from ultraviolet to mid-infrared. ZnS, ZnSe and germanium materials focus on mid-wave and long-wave infrared, widely matched with thermal imaging infrared detector modules.
All finished domes undergo spectrophotometer transmittance and reflectance testing before delivery. Customers can specify target wavelength, transmittance threshold and inspection sampling standards according to system optical design.
Material selection suggestions can be found in the Felix Glass blog.
Surface protection performance
6. Anti-Abrasion & Anti-Corrosion Surface Characteristics
Surveillance optical domes work outdoors for a long time, facing sand impact, seawater erosion, dust friction. Sapphire material effectively avoids frequent scratch damage of optical windows.
High hardness anti-scratchSapphire material effectively prevents surface scratches caused by sand and debris impact.
Salt fog corrosion resistanceStable chemical properties, adapt to long-term offshore and marine working environment.
Coating durabilityHigh-quality vacuum AR coating with stable performance after temperature cycle aging test.
Anti-reflection coating improves optical efficiency; regular cleaning maintenance is still required in severe dust environment.
Anti-reflection optimization
7. Broadband AR & BBAR Anti-Reflection Coating Solution
Light reflection on the dome surface will reduce imaging clarity, cause ghost images and reduce detection distance. Customized single-layer or multi-layer anti-reflection coatings can greatly improve light transmittance.
We provide targeted coating solutions for visible light, near-infrared, mid-wave infrared and long-wave infrared bands. Engineers can select coating schemes according to the working spectrum of imaging equipment.
Return to the Felix Glass home page to view all precision optical components.
Custom specification list
8. Optional Customization Parameters
The following options cover conventional customized requirements. Final manufacturability will be reviewed after receiving customer engineering drawings.
| Specification item | Available options | Project confirmation |
|---|---|---|
| Substrate Material | Single Crystal Sapphire, BK7/H-K9L, ZnS, ZnSe, Germanium | Working spectrum, environment, cost budget |
| Dome Structure | Hemisphere, hyper hemisphere, flanged integrated dome | FOV requirement, installation space, assembly structure |
| Size & Wall Thickness | Custom outer diameter, inner diameter, spherical radius, wall thickness | Pressure resistance limit, optical design constraints |
| Optical Coating | Single band AR, broadband BBAR anti-reflection coating | Target wavelength, transmittance & reflectance target |
| Surface Quality | 40/20, 20/10 MIL optical surface grade | Imaging system sensitivity requirements |
| Edge Treatment | Flat edge, chamfer edge, sealing step processing | Housing assembly and sealing design |
Sampling & mass production cycle
9. Lead Time for Samples & Volume Orders
After drawing review, material and process scheme are confirmed, the production cycle is as follows:
- 1
Prototype samples: 10–14 working days
For optical performance, assembly and environmental test verification.
- 2
Trial small batches: 16–22 working days
Process stability verification before formal mass production.
- 3
Mass production orders: 25–35 working days
Actual delivery time subject to order quantity, raw material status and coating schedule.
Adopt shockproof foam separation and moisture-proof export carton packaging, suitable for sea freight and air freight transportation.
Technical FAQ
10. Optical Dome Technical Frequently Asked Questions
The following contents describe conventional performance. Specific indicators need to be confirmed according to project drawings and testing standards.
Which material should I choose for deep sea ROV dome?
Single crystal sapphire is the preferred solution, with excellent pressure resistance and seawater corrosion resistance. We can provide pressure test verification support according to operating depth.
Can hyper hemispherical sapphire domes be customized?
Yes. We support all kinds of hyper hemispherical dome processing. Feasibility evaluation will be carried out according to diameter, wall thickness and spherical radius provided by CAD drawings.
Can you provide optical transmittance test reports?
Yes. Spectral transmittance test data can be provided for batch goods as required by customers for equipment qualification review.
Is BBAR coating available for infrared ZnS domes?
Support customized broadband anti-reflection coating for MWIR and LWIR to improve infrared signal transmittance of thermal imaging systems.
What is the maximum processing diameter of sapphire dome?
The maximum size depends on blank raw material specifications. Send your drawing to our engineer for one-to-one feasibility evaluation.
Can long-term stable mass supply be guaranteed?
Felix Glass has complete in-house processing capacity to support prototype, trial order and long-term mass OEM supply for surveillance equipment manufacturers.
RFQ preparation checklist
Send project requirements
Send Your Optical Dome Drawing For Custom Quotation
Please provide CAD drawing, required substrate material, dome dimension, target spectrum, coating requirements, surface quality standard, annual demand quantity and test specifications. Our optical engineers will evaluate manufacturability and provide quotation & sample plan quickly.