Specifications
EFL (mm): 50
Dia: 50
D: 52.1
CT: 15
ET: 2.9
Material: BK7
R1: 49.66
R2: -49.66
BF: 45.3
V1H1: 5.2
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.