99.99% High-Purity Fused Silica
Premium SiO₂ substrate delivers ultra-low thermal expansion, stable performance under extreme high and cryogenic temperature conditions for aerospace optical missions.
✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes






Felix Glass Co., Limited manufactures high-precision, high-stability custom fused silica domes built for aerospace sensors, satellite optical payloads and extreme environment optical systems. Fabricated from ≥99.99% high-purity fused silica, our aerospace-grade spherical optics deliver reliable optical protection under extreme temperature, cosmic radiation and harsh space operating conditions. We maintain full in-house production capacity, supporting engineering prototype development through mass-volume serial manufacturing. Conventional optical glass cannot survive extreme temperature swings, continuous cosmic radiation and long-duration orbital service required by aerospace equipment. High-purity fused silica dome features ultra-low thermal expansion, wide-spectrum light transmission and superior radiation resistance. The spherical dome structure shields internal optical sensors, stabilizes optical path performance and maintains imaging precision under complex outer space and aerodynamic environments. Premium SiO₂ substrate delivers ultra-low thermal expansion, stable performance under extreme high and cryogenic temperature conditions for aerospace optical missions. Stable transmittance covering UV, visible and infrared wavebands, supporting satellite observation, aerospace sensing and scientific optical detection systems. Hemisphere, hyper-hemisphere, wall thickness, curvature and aerospace specialized coating schemes are customizable strictly per customer engineering drawings. The baseline material is ≥99.99% high purity fused silica (quartz). For applications requiring extreme surface hardness, we provide sapphire dome as an alternative upgrade solution. We support multiple customized optical coatings to satisfy space radiation resistance, high-temperature anti-oxidation and high-transmission requirements. Orbital altitude, temperature range, radiation exposure and target optical waveband determine final dome thickness, curvature and coating configuration. Our fused silica domes maintain long-term stable optical performance for aviation, space launch, satellite payload and ground high-temperature optical testing equipment. Optical protection dome for aircraft and unmanned aerial vehicle sensing systems to guarantee stable signal transmission during flight. Ultra-precision radiation-resistant dome for earth observation satellite optical systems, designed for multi-year stable orbital operation. Dome-shaped high-temperature optical window resisting thermal shock for rocket assemblies and ground aerospace thermal simulation testing stations. Verify dome diameter, curvature, wall thickness, optical zone, tolerance, temperature and radiation service specifications. Select qualified fused silica ingot and calculate machining allowance based on aerospace geometry standards. Controlled CNC forming and curve grinding to achieve near-net shape of spherical aerospace dome. Ultra-precision optical polishing followed by vacuum deposition of AR, anti-radiation or anti-oxidation functional coatings. Full optical, dimension and environmental simulation testing; vibration-proof transit packaging for aerospace supply chain. We support single-unit prototype sampling and large-scale batch manufacturing of custom aerospace fused silica domes. To obtain accurate formal quotation, please submit engineering drawing, target quantity, geometry specification, coating requirements, optical tolerance, extreme operating environment and aerospace inspection acceptance criteria. Prototype lead time and bulk delivery cycle depend on dome geometry complexity, specialized aerospace coating and testing requirements. Conventional fused silica dome designs complete feasibility assessment rapidly; complex space-grade customized domes will schedule dedicated engineering communication to optimize structure and control overall project budget. System requires ultra-low thermal expansion, wide UV-IR transmission, radiation resistance and stable performance under extreme high / cryogenic temperatures. The optical surface faces persistent abrasion, repeated cleaning, high-speed particle erosion, prioritizing Mohs 9 extreme surface hardness. The mission operates in outer space with cosmic radiation, high-temperature oxidation, or requires controlled reflectivity across specific optical wavebands. A fused silica dome is a high-precision hemispherical optical component manufactured from high-purity fused silica, designed to protect optical sensors working under extreme aerospace and high-temperature environments. Fused silica delivers ultra-low thermal expansion coefficient, outstanding radiation resistance, wide-spectrum UV to IR transmittance, and stable performance from cryogenic up to 1200°C. Yes. We customize diameter, wall thickness, spherical radius, hemispherical / hyper-hemispherical profile and special structural features strictly according to customer engineering drawings. We supply wavelength-specific AR anti-reflection coatings, space-grade anti-radiation coating and high-temperature anti-oxidation multilayer vacuum coatings. Yes, we accept MOQ of 1 piece for engineering prototype testing, supporting aerospace pre-qualification and verification projects. Share your aerospace project background, fused silica dome engineering drawing, coating specifications and target order quantity. Felix Glass optical engineering team will evaluate manufacturability, optical performance, environmental test requirements and issue official quotation for custom aerospace fused silica optical dome.Custom Fused Silica Dome | High Stability Optical Protection for Aerospace Sensors
Aerospace Optical System Challenges Solved By Fused Silica Dome
99.99% High-Purity Fused Silica
Broad Spectrum Optical Transmission
Drawing-Driven Fully Custom Geometry
Material & Aerospace-Grade Technical Parameters For Engineering Review
Key Product Specifications For Custom Aerospace Fused Silica Dome
Product type
Custom Fused Silica Dome | High Stability Optical Protection for Aerospace Sensors
Model reference
FG-DOME-FS-AERO01
Material
≥99.99% High-Purity Fused Silica SiO₂
Dome Shape
Hemisphere, Sphere, Hyper-hemisphere, Custom geometry
Diameter Range
10mm – 500mm Customizable
Wall Thickness
0.5mm – 20mm Per drawing requirements
Surface Quality
60/40, 40/20, 20/10 MIL STD standard
Optical Flatness
λ/2, λ/4, λ/10 @633nm
Functional Coating
AR, Anti-Radiation, Anti-Oxidation vacuum coatings
Operating Temperature
-196°C ~ +1200°C
Quality Testing
Interferometer, Spectrometer, Radiation simulation, thermal shock testing
MOQ
1 unit for prototype sampling
Certification
ISO 9001 Certified production facility
Typical Application Scenarios For Aerospace Fused Silica Dome
Aerospace & UAV Airborne Sensors
Satellite Optical Payloads
Rocket & High-Temperature Optical Systems
Felix Glass RFQ & Aerospace Fused Silica Dome Production Workflow
Drawing & Aerospace Requirement Review
High-Purity Fused Silica Blank Preparation
CNC Cutting & Precision Grinding
Ultra-Fine Polishing & Vacuum Coating
Aerospace-Grade Inspection & Secure Packing
From Single Prototype To Mass Aerospace Fused Silica Dome Orders
Select Fused Silica / Sapphire Dome For Your Aerospace Project
Choose Fused Silica Dome When
Upgrade To Sapphire Dome When
Define Coating Requirements When
Internal Links For Optical Product Cluster Comparison
Frequently Asked Questions About Aerospace Custom Fused Silica Dome
What is a fused silica optical dome?
What core advantages does fused silica dome offer?
Can you fully customize dome geometry?
What functional coatings are available for aerospace missions?
Do you support single prototype sampling for aerospace R&D?
Submit Your Aerospace Dome Drawing For Engineering Assessment & Formal Quotation
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 Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
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?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.