Specifications
EFL (mm): 182.4
Dia: 25.4
CT: 4
MATERIAL: S-NSL5
ET: 3
BF: 174
R1: 40.91
V1H1: -4.2
R2: 63.92
V2H2: -6.3
D: 172.7
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: 587.1nm
All dimensions are in millimeters.