Optical Grade CaF2 Single Crystal
Design Wavelength: 1.5um
Design Index: n=1.425
Surface Quality: 80-50 scratch and dig
Paraxial Focal Length: +/-2%
Diameter Tolerance: +0.0, -0.15mm
Centration: 3 arc minutes
Clear Aperture: >80%
Surface Figure: ¦Ë/4@632.8nm
Bevel: 0.25 mm x 45¡ã