Specifications
EFL (mm): 8
Dia: 4
CT: 2.5
ET: 2
Material: BK7
R1: 4.12
R2: Plano
BF: 6.4
Specifications: Effective Focal Length (EFL): +/- 1%, under 15mm +/- 5%
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: 546.1 nm
All dimensions are in millimeters.