Calcium Fluoride: Calcium Fluoride (CaF2) exhibits good transmission properties from ~ 140nm Vacuum UV (VUV) to ~ 8.0um in the Infrared. CaF2 is a relatively soft crystalline material and care should be taken as CaF2 is sensitive to mechanical and thermal shock. CaF2 is a cubic procurement customizable large size optical Windowoptical material.
Calcium procurement customizable UV and IR grade optical lens is made from Custom-made CaF2. Fluorides are usually toxic to humans, however CaF2 is considered relatively harmless due to its extreme insolubility. The material is commonly used as a window material for both infrared and ultraviolet wavelengths, since it is transparent in these regions (about 0.15 μm to 9 μm) and exhibits extremely weak birefringence. The birefringence of calcium fluoride exceeds tolerable limits. This problem with birefringence can be mitigated through optimised growth process. It is particularly important as an ultraviolet optical material for integrated circuit lithography.
alcium procurement customizable large size optical filter Specifications:
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: ±0.2mm（General),±0.05(High Precision)
Surface Quality: 80/50（General),40/20(High Precision)
Clear Aperture: ＞90%
AR Coated:Uncoated, AR, HR, PR, etc.