Specifications
EFL (mm): -189.2
Dia: 9.9
CT: 4.7
ET: 4.9
Material: BK 7
R1: -5.28
R2: -7.26
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