Specification: D10/15/20/25/30/40/50/60/80/100/150 Material: calcium oxide single crystal Transmission range (μm): 0.13~9.0 Transmittance: >90% (0.3~7μm, 3mm)Features: good transmittance 200nm-8um transmittance greater than 93%, less impurities not easy to deliquescence CaF2 crystal has the characteristics of easy processing, no deliquescence, very wide spectral range, from 0.13um-9um have good transmittance, transmittance can reach about 94%, is a very good ultraviolet high transmittance material, infrared high transmittance material · Broad-spectrum transmission: It has high transmittance in the vacuum ultraviolet (VUV) to infrared (8µm) wavelength range. · Weather resistance and stability: Calcium fluoride crystals have high humidity durability and are suitable for use in harsh environments. · Low absorption and high damage threshold: This is crucial for free-space machine applications. · No birefringence: Due to its isotropic crystal nature, no birefringence occurs, making it suitable for applications requiring sensitivity to polarization.