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infrared germanium lenses

Update time:2017-06-02 15:25:30The number of clicks: 2740
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Material
Optical Grade Germanium
Size
1.2-200mm/Custom
Thickness
±0.03mm/Custom
Thickness Tolerance
0.2-50mm/Custom
Surface Finish
40-20
Irregularity
2 fringes

PROPERTIES

Material

Optical Grade Ge

Transmission Range

2 to 20 microns

Density

5.33g/cm3

Refractive Index

4.0026@10um

Melting point

937

Surface Accuracy

40/20

Surface Flatness

1 lambda@633nm

Clear Aperture

90% min

Parallelism

< 3 arc minutes

Coating

None