Specifications
EFL (mm): 40.1
Dia: 38.1
D: 38.1
CT: 13.6
ET: 2.2
R1: 34.7
R2: -34.7
BF: 35.2
V1H1: 4.9
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.