Sapphire Windows

Sapphire (Al₂O₃) exhibits remarkable comprehensive advantages as an optical window: Its Mohs hardness reaches grade 9, approaching diamond’s rating, endowing it with exceptional abrasion resistance and impact toughness for long-term stable operation in harsh environments; its high transmittance across the ultraviolet to infrared spectrum suits multispectral system integration; outstanding heat resistance enables endurance beyond 1000°C with an extremely low coefficient of thermal expansion, maintaining structural integrity and optical stability under extreme temperature differentials; its chemically inert nature offers strong acid/alkali corrosion resistance and oxidation resistance, making it suitable for corrosive environments; combining high mechanical strength with precision machinability, it supports thin-wall designs and nanometer-level surface polishing, while accommodating customized coatings such as anti-reflective or reflective layers. Widely applied in fields including laser transmission, aerospace payloads, biomedical devices, and high-pressure sensors.

Material: Sapphire
Dimensional Tolerance: +0.0/-0.15 mm
Thickness Tolerance: ±0.1 mm
Parallelism: <3 arcminutes
Surface Finish (Scratch/Dig): 60/40 – 20/10
Figure Accuracy: λ/2 – λ/10
Beveled Edge: 0.25 mm × 45°
Clear Aperture: 90%
Coating: Customized as per requirement