EXTENDED-PUPIL TELECENTRIC LENS Russian patent published in 2023 - IPC G02B9/60 G02B13/22 

FIELD: lenses.

SUBSTANCE: lens can be used as a collimator lens in test equipment for phono-target environment simulation based on micromirror arrays. A telecentric lens with an extended pupil consists of four components sequentially arranged along the optical axis, the first and third of which are made in the form of a biconvex lens, the second is made in the form of a biconcave lens, the fourth negative component comprises the first positive and second negative convex-concave lenses separated by an air gap.

EFFECT: increase in the diameter of the entrance pupil by increasing the relative aperture while providing high image quality within the entire field of view.

1 cl, 4 dwg, 2 tbl