Specifications
EFL (mm): 50
Dia: 25.4
D: 50.2
CT: 4.2
ET: 1
Material: BK7
R1: 50.79
R2: -50.79
BF: 48.6
V1H1: 1.4
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.