US 12,146,986 B2
Multi-channel lidar optical sub-assembly with shared optics
Jiamin Zheng, Ottawa (CA); Barrie P. Keyworth, Ottawa (CA); Josh P. Kemp, Kanata (CA); Michael C. Larson, Oakland, CA (US); and Paul Colbourne, Ottawa (CA)
Assigned to Lumentum Operations LLC, San Jose, CA (US)
Filed by Lumentum Operations LLC, Milpitas, CA (US)
Filed on Nov. 15, 2019, as Appl. No. 16/685,409.
Claims priority of provisional application 62/895,810, filed on Sep. 4, 2019.
Prior Publication US 2021/0063541 A1, Mar. 4, 2021
Int. Cl. G01S 7/481 (2006.01); G01S 7/4911 (2020.01); G01S 7/4914 (2020.01); G01S 7/499 (2006.01); G01S 17/34 (2020.01); G02B 6/12 (2006.01); G02B 27/28 (2006.01); H04J 14/02 (2006.01); H04J 14/06 (2006.01)
CPC G01S 7/4817 (2013.01) [G01S 7/4813 (2013.01); G01S 7/4814 (2013.01); G01S 7/4816 (2013.01); G01S 7/4911 (2013.01); G01S 7/4914 (2013.01); G01S 7/499 (2013.01); G01S 17/34 (2020.01); G02B 6/12007 (2013.01); G02B 27/283 (2013.01); H04J 14/02 (2013.01); H04J 14/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a laser component to emit a source beam, wherein the laser component comprises a frequency-modulated, continuous-wave laser source;
an optical component including:
a polarization beam splitter to split the source beam to generate a first beam and a second beam, the first beam having a polarization that is substantially orthogonal to a polarization of the second beam, and
one or more amplifiers to amplify the first beam and the second beam generated by splitting the source beam;
a multiplexing component to multiplex the first beam and the second beam to form a first multiplexed beam;
an optical system that includes a circulator that is to receive the first multiplexed beam,
wherein the optical system is to demultiplex the first multiplexed beam to obtain the first beam and the second beam;
a scanning component to:
receive, from the optical system, the first beam and the second beam,
scan a field of view with the first beam and the second beam,
receive the first beam reflected from the field of view and the second beam reflected from the field of view, and
provide the first beam reflected from the field of view and the second beam reflected from the field of view to the optical system, wherein the optical system is to multiplex the first beam reflected from the field of view and the second beam reflected from the field of view to form a second multiplexed beam reflected from the field of view;
a demultiplexing component to receive, from the optical system, the second multiplexed beam reflected from the field of view and demultiplex the second multiplexed beam reflected from the field of view to obtain the first beam reflected from the field of view and the second beam reflected from the field of view;
a first receiver to receive, from the demultiplexing component, the first beam reflected from the field of view;
a second receiver to receive, from the demultiplexing component, the second beam reflected from the field of view; and
an optomechanical bench that holds the laser component, the optical component, the multiplexing component, the optical system, the scanning component, the demultiplexing component, the first receiver, and the second receiver in optical and mechanical alignment.