Specifications
EFL (mm): 50.8
Dia: 60
D: 52.7
CT: 23.7
ET: 2.8
Material: BK7
R1: 48.28
R2: -48.28
BF: 42.3
V1H1: 8.5
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.