Specifications
EFL (mm): 22
Dia: 20
D: 22.1
CT: 6.9
ET: 2
Material: BK7
R1: 21.58
R2: -21.58
BF: 19.6
V1H1: 2.4
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.