Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 30
Major Dia: 20
ET: 8.9
Glass Type Code: F
R1: 19.11
V1H1: 1.7
CT Lens 1: 10
V2H2: 6.7
R2: -14
FF: 28.3
CT Lens 2: 2.6
A: 31.2
R3: -51.44
BF: 23.3
D: 27.5
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.