Dimensions in mm
Material:Optical glass type,fine annealed or UV grade fused silica, Si, Ge
Clear apertuer: 85% of diameter
Focal length tolerance:+/-2%
Diameter tolerance:+0.0/-0.1mm
Center thickness tolerance:+/-0.1mm
Centering Tolerence: 3 arcmin
Surface Accuracy: ?/4 @546.1nm
Surfacae Quality:60-40
Coating: Optional
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