Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 31
Major Dia: 17.5
ET: 6.5
Glass Type Code: O
R1: 21.24
V1H1: 0.9
CT Lens 1: 6.8
V2H2: -4.7
R2: -14.59
FF: 30.1
CT Lens 2: 2.1
A: 32
R3: -70.27
BF: 26.3
D: 27
The classic structure of a doublet combines a positively powered crown element with a negatively powered flint element. They deliver high performance when the application involves small fields of view, typically up to 6 degrees. Their image quality surpasses that of singlets.