Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 25
Major Dia: 4
ET: 4.9
Glass Type Code: F
R1: 16.5
V1H1: 1.5
CT Lens 1: 2.6
V2H2: -4
R2: -10.88
FF: 24.1
CT Lens 2: 2.5
A: 40.2
R3: -39.8
BF: 22.6
D: 36.6
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.