US 12,416,802 B2
Scanner laser optics for LIDAR
Nenad Nestorovic, Seattle, WA (US); and Jack Schmidt, San Marcos, CA (US)
Assigned to STMicroelectronics International N.V., Geneva (CH)
Filed by STMicroelectronics International N.V., Geneva (CH)
Filed on Apr. 1, 2022, as Appl. No. 17/711,780.
Prior Publication US 2023/0314791 A1, Oct. 5, 2023
Int. Cl. G02B 26/08 (2006.01); G01S 7/481 (2006.01); G02B 26/10 (2006.01); G02B 27/09 (2006.01)
CPC G02B 26/0841 (2013.01) [G01S 7/4815 (2013.01); G01S 7/4817 (2013.01); G02B 26/10 (2013.01); G02B 27/0955 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical module, comprising:
a first lens doublet receiving a combined laser beam, the first lens doublet comprising: a first plano-concave lens having an upstream surface with a concave cross section and a downstream surface with a planar cross section, and a first plano-convex lens downstream of the first plano-concave lens having an upstream surface with a planar cross section and a downstream surface with a convex cross section;
a second lens doublet downstream of the first lens doublet and comprising: a first concave lens, and a second lens downstream of the first concave lens having an upstream surface with a convex cross section and a downstream surface with a paraboloid cross section;
a concave-convex lens downstream of the second lens doublet and having an upstream surface with a concave cross section and a downstream surface with a convex cross section;
a third lens doublet downstream of the concave-convex lens and comprising: a second concave lens, and a convex lens downstream of the second concave lens; and
a second plano-concave lens having an upstream surface with a planar cross section and a downstream surface with a concave cross section;
wherein the first lens doublet, second lens doublet, concave-convex lens, third lens doublet, and second plano-concave lens cooperate to shape the combined laser beam to have high-divergence along a first axis but low-divergence along a second axis.