Material: flint glasses, UV-fused silica, Infrared fused silica, CaF2, Ge, ZnSe, Si, etc.

Focal length:+/-5mm-- +/-1000mm1%(test by TIROPTICS OPTOMATIC2000 made in German)

Length: 2mm-300mm +/-0.1mm

Width:  2mm-150mm+/-0.1mm

Tc tolerance:+/-0.2mm

Centration: 3'

Surface accuracy: lambda/2

Surface quality: 40/20

Clear aperture: 90%

Coating: custom design