Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 40
Major Dia: 18
ET: 6.1
Glass Type Code: JJ
R1: 24.15
V1H1: 1.5
CT Lens 1: 5.7
V2H2: -4.1
R2: -20
FF: 38.4
CT Lens 2: 2.8
A: 40.1
R3: -53.51
BF: 35.8
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.