Specifications
EFL (mm): 498.5
Dia: 50
CT: 4.5
ET: 3.05
R1: 216.8
R2: Plano
BF: 497
V1H1: 0
V2H2: -2.13
Specifications: Effective Focal Length (EFL): +/-1%
Diameter (DIA): +0/-.18
Clear Aperture: 90% of diameter
Center Thickness (CT): +/-.25
Cosmetics: 80/50
Surface Quality: 3 x 1 waves @ 1.5 microns
Centering Accuracy: 3 arc minutes TIA
Designed Wavelength: 1.5 microns
All dimensions are in millimeters.