US 11,940,571 B2
Performing speckle reduction using polarization
Neal N. Oza, Palo Alto, CA (US); Omer P. Kocaoglu, Fremont, CA (US); Behsan Behzadi, Sunnyvale, CA (US); Oguzhan Avci, San Francisco, CA (US); Keith Gagne, Santa Clara, CA (US); and Mina Rezk, Haymarket, VA (US)
Assigned to Aeva, Inc., Mountain View, CA (US)
Filed by Aeva, Inc., Mountain View, CA (US)
Filed on Dec. 12, 2019, as Appl. No. 16/712,744.
Prior Publication US 2021/0181320 A1, Jun. 17, 2021
Int. Cl. G01S 7/499 (2006.01); G01S 7/481 (2006.01); G01S 17/08 (2006.01); G01S 17/58 (2006.01)
CPC G01S 7/499 (2013.01) [G01S 7/481 (2013.01); G01S 17/08 (2013.01); G01S 17/58 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of operating a light detection and ranging (LIDAR) system comprising:
generating a beam of co-propagating, cross-polarized light, the light being reflected from a target;
transforming, between a plurality of orthogonal pairs of polarizations, a polarization state of the light reflected from the target using a variable polarization rotator, at a rate faster than a rate of data collection at a plurality of detectors configured to detect the light reflected from the target; and
determining at least one of a material characteristic or an orientation of the target using the co-propagating, cross-polarized light.