H-K9L optical glass is a high-performance optical material featuring exceptional broadband transmittance, with high light transmission rates across the 350 nm–2000 nm spectrum. Boasting superior hardness, strong resistance to diverse physical and chemical stresses, and minimal bubbles and impurities, it serves as an ideal substrate for fabricating a wide range of precision optical components.

Material | Optical Glass, H-K9L, N-BK7 |
Dimension Tolerance | +/-0.01mm, or +/-0.1mm |
Thickness&Height | As customer's drawings |
Flatness | PV: 1/10 Lambda |
Centration | < 30 arc seconds |
Surface Quality | 10/5,20/10,40/20 |
Clear Aperture | >90% |
Bevel | Protective bevel |
Coating | According to customer's request |
Optical domes are high-precision spherical optical components featuring concentric inner and outer surfaces and uniform thickness, engineered to meet strict fluid mechanics requirements for high-speed moving carriers and extreme environment operations. With exceptional light transmittance across UV, VIS, and IR spectral bands, these robust components minimize optical aberration while protecting internal optoelectronic systems from harsh external conditions such as deep-sea pressure, aerospace radiation, and military field debris.
Widely deployed across core industries, high-precision optical domes serve as critical components for deep-sea submersibles and underwater monitoring equipment, ensure stable performance for meteorological observation systems, and act as key fairings for missile guidance and airborne optoelectronic platforms in the military sector. Their versatile design adapts to diverse application scenarios, from scientific research exploration to industrial detection and defense technology.
As a professional optical component manufacturer, AOS Optics offers custom optical dome solutions tailored to specific spectral bands and environmental demands. Our optical domes are fabricated from premium substrates including H-K9L optical glass, fused silica, germanium, and zinc selenide, with optional anti-reflection (AR) coatings to enhance transmittance and durability. Contact us for bespoke optical dome designs that align with your project specifications.


Phone: +86 189 4674 7897
E-mail: info@aosoptics.com
Whatsapp:8618946747897
Add: Yiju Road High-Tech Zone, Changchun City, Jilin Province, China