Cemented DoubletsClick part # for details or to add to shopping cart.
Specifications
EFL (mm): 19.8
Major Dia: 7
ET: 4.2
Glass Type Code: PP
R1: 14.8
V1H1: 1.7
CT Lens 1: 3
V2H2: -1.8
R2: -7.41
FF: 18.1
CT Lens 2: 2
A: 18.6
R3: -17.41
BF: 18
D: 18.4
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.