Technical parameters CaF2 flat lens (uncoated)

material

Calcium fluoride (CaF2) single crystal

Design wavelength

587.6nm

size

D12.7*CT4.3mm

Diameter error

+0/-0.1mm

radius of curvature

R8.7mm

Center thickness error

±0.1mm

focal distance

F20mm

surface finish quality

40/20

Face type error

1/4L

Settlements error

3′

Focal distance error

±2%

angle of chamfer

0.2mm*45°