The material of sapphire high and low temperature resistant glass is sapphire crystal, which has good transmittance from near ultraviolet to 5 μ m infrared region, and has very high hardness, making it not easy to be scratched. Sapphire is a chemically stable substance without the light absorption caused by hydroxyl groups (OH) (1.4 μ, 2.2 μ, 2.7 μ), which can be used for near-infrared analysis and optical instruments for on-site use.

technical parameter

Material: Sapphire

Design wavelength: 587.6nm

Focal length tolerance: ± 1%

Shape tolerance: 0.0/-0.1mm

Thickness tolerance: ± 0.1mm

Surface shape: λ/4 @ 632.8nm

Completed: 40-20

Eccentricity:<3 ′ Effective aperture:>90%

Diagonal angle:<0.2 × 45 °

Coating: UVAR: 290-370nm

Sapphire high and low temperature resistant glass has excellent optical properties, mechanical properties, and chemical stability, as well as high strength, hardness, and corrosion resistance. It can work under harsh conditions close to 2000 ℃, so it is widely used in infrared military equipment and high-strength laser lenses. Materials and photomask materials, with their unique lattice structure, excellent mechanical properties, and good thermal performance, make sapphire glass commonly used as a material for optoelectronic components.