Technical parameters Zinc selenide (ZnSe) crescent lens (not coated)

material

Zinc selenide (ZnSe) single crystal

Design wavelength

587.6nm

size

D25*CT3.1mm

Diameter error

+0/-0.1mm

radius of curvature

R89  R-240mm

Center thickness error

±0.1mm

focal distance

F100mm

surface finish quality

40/20

Face type error

1/4L

Settlements error

3′

Focal distance error

±2%

angle of chamfer

0.2mm*45°