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Products >> calcium fluoride

Calcium fluoride is essential optical crystal with excellent hardness and strong resistance for thermal fluctuation. Calcium fluoride is widely used in scientific research and RND department, the application for calcium fluoride is astronomical observation and other optical device.

 

Material

GH-194

GH-247

GH-UV

GH-IR

Dimension

D350*80mm

D520 *60mm

Transmission

per 10mm thickness

>99.9

>99.9

 

 

Stree briefringence       PV@ 633nm[nm/cm]

1-20

1-40

Refractive index homogeneity PV@633nm [ppm]

1-15

3-18

Transmission range, microns

0.13-10

Transmittance at 0.193-7.87um

>95%

Refection loss

5.4%

absorption

7.8X10-4

Crystal structure

Cubic

Cleavage planes, direction

<111>

Metaling point

1420 degree

Thermal expansion [10-6/k]

18.5@273k

Thermal conductivity [w/(mxk)]

9.17 @293k

Specific heat capacity [j/(kgXk)]

854

 


 

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