Specifications
EFL (mm): 102
Dia: 19
CT: 4
MATERIAL: BK 7
ET: 3.1
BF: 97.8
R1: 33.72
V1H1: -1.5
R2: 90
V2H2: -4.1
D: 97.3
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: 587.1nm
All dimensions are in millimeters.