overview convex lens from China for beam expanders

overview convex lens from China for beam expanders

material:
optical grade caf2 single crystal
design wavelength:
1.5um
diameter tolerance:
l+0.0, -0.15mm
paraxial focal length:
+-2%
centration:
3arcminutes
surface quality:
80-50scratchanddig
clear aperture:
>80%
bevel:
coating:
uncoated
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