US 12,332,536 B2
Optical scanner
Chihiro Moriguchi, Kariya (JP); Yuichi Toyota, Kariya (JP); Taro Beppu, Kariya (JP); and Hikaru Sasaki, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Mar. 28, 2023, as Appl. No. 18/191,355.
Application 18/191,355 is a continuation of application No. PCT/JP2021/034109, filed on Sep. 16, 2021.
Claims priority of application No. 2020-165998 (JP), filed on Sep. 30, 2020.
Prior Publication US 2023/0236472 A1, Jul. 27, 2023
Int. Cl. H04B 10/11 (2013.01); G02B 26/10 (2006.01); G02F 1/29 (2006.01)
CPC G02F 1/292 (2013.01) [G02B 26/106 (2013.01); H04B 10/11 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical scanner comprising:
a light receiving unit that includes an optical phased array that is configured to implement scanning by a light beam by individually controlling phases of a plurality of branched lights using a scanning phase amount;
a reference light irradiating unit that is configured to generate reference light and irradiate the reference light onto the light receiving unit; and
a light-receiving-side correcting unit that is configured to
estimate a phase shift amount that occurs in the plurality of branched lights as a result of distortion of a substrate on which the light receiving unit is mounted from a detection result of the light receiving unit onto which the reference light is incident, and
set a phase adjustment amount to be applied to the plurality of branched lights such that the estimated phase shift amount decreases.