Specifications
EFL (mm): 66.1
Dia: 14
CT: 3
MATERIAL: BK 7
ET: 2.3
BF: 64
R1: 30.33
V1H1: -0.3
R2: 260
V2H2: -2.2
D: 63.9
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: 587.1nm
All dimensions are in millimeters.