Double concave and plano concave lenses have a negative focal length.
Material |
Float Glass, BK7, FS (IR/UV), Sapphire, CaF2, MgF2 |
Diameter |
6 – 76mm |
Dimensional Tolerance |
±0.1mm |
Focal Length |
(-5) – (-5000)mm |
Clear Aperture |
90% |
EFL Tolerance |
±1% |
Surface Quality |
40/20 |
Coatings |
Ravg <= 0.5% (@600-1050nm) |
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