Specifications
EFL (mm): 42
Dia: 22.9
D: 41.2
CT: 6.4
ET: 3.3
Material: B270
R1: 42.66
R2: -42.66
BF: 39.7
V1H1: 2.3
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.