Specifications
EFL (mm): -75
Dia: 50
CT: 4
ET: 14.7
R1: -34.51
R2: Plano
BF: -77.7
V1H1: 0
V2H2: -2.7
Specifications: Effective Focal Length (EFL): +/-1%
Diameter (DIA): +0/-.18
Clear Aperture: 90% of diameter
Center Thickness (CT): +/-.25
Cosmetics: 60/40
Surface Quality: 2 ½ x ½ waves @ 546.1nm
Centering Accuracy: 2 arc minutes TIA
Designed Waveleng