Specifications
EFL (mm): 3.5
Dia: 3
D: 3.2
CT: 1.8
ET: 1.1
Material: B270
R1: 3.33
R2: -3.33
BF: 2.8
V1H1: 0.7
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: 546.1nm
All dimensions are in millimeters.