Specifications
EFL (mm): 52
Dia: 50.8
D: 53.1
CT: 18
ET: 2.5
R1: 44.1
R2: -44.1
BF: 45.4
V1H1: 6.6
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 1/2 x 1/2 waves @ 546.1nm
Centering Accuracy: 2 arc minutes TIA
Designed Wavelength: 546.1nm
All dimensions are in millimeters.