Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 40
Major Dia: 18
ET: 6.1
Glass Type Code: C
R1: 27.25
V1H1: 0.7
CT Lens 1: 5.9
V2H2: -4.3
R2: -17.36
FF: 39.3
CT Lens 2: 2.1
A: 40.8
R3: -101.11
BF: 35.7
D: 36.1
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.