Specifications
EFL (mm): 27
Dia: 25.4
D: 27.1
CT: 10
ET: 2.3
R1: 23.1
R2: -23.1
BF: 23.3
V1H1: 3.7
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.