Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 30
Major Dia: 12.5
ET: 4.1
Glass Type Code: C
R1: 20.45
V1H1: 0.5
CT Lens 1: 4
V2H2: -2.8
R2: -12.93
FF: 29.5
CT Lens 2: 1.4
A: 30
R3: -75.73
BF: 27.2
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.