Custom Optical components| Polarizers - CeNing Optics
Professional manufacturer of optical components
CaF2
Calcium fluoride CaF2  is commonly used as a window material for both infrared and ultraviolet wavelengths, since it is transparent in these regions (about 0.15mm to 9mm) and exhibits extremely weak birefringence. Furthermore the material is fairly inert chemically so that these windows are not attacked. Nevertheless, at wavelengths as low as 157nm, which are interesting to semiconductor manufacturers, the birefringence of calcium fluoride exceeds tolerable limits.
Fluorides are toxic to humans, however CaF2 is considered relatively harmless due to its extreme insolubility
We provide artificially-crystallized calcium fluoride components available in IR grade and UV Grade. The cost of UV grade is much expensive than IR grade.
 
Transparence range:
0.13—11.3mm
Index::
1.50@193nm, 1.42@1mm, 1.42 @2.6mm
Knoop hardness:
170kg/mm2
Density:
3.18 g/cm3
Melting Point:
1360℃
Young's Modulus:
75.8 GPa
Dielectric Constant
6.76x106Hz
Thermal Expansion
18.85 x10-6/℃
Thermal Conductivity
9.71 w/m-1°K-1
 
 
General specifications
Surface quality
60-40 S/D
Parallelism
3 arcmin
Flatness
l/2@633nm
Bevel
Protective bevel
 
Typical sizes
Diameter
Thickness
f5.0
1.0
f10.0
1.0
f12.7
2.0
f15.0
2.0
f20.0
2.0
f25.4
3.0
f38.1
3.0
 
CaF2 windows
 
Price on request
Custom design
Volume discount
CeNing Optics Co.,Ltd, Tel: +86 591 8733 8232 Fax: +86 591 8733 4595 E-mail: sales@cn-optics.com
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