Specifications
EFL (mm): 18.6
Dia: 2.8
D: 17.6
CT: 29.5
ET: 29.4
Material: N-S-BAL35
R1: 11.68
R2: -11.68
BF: 17.5
V1H1: 1.1
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.