US 12,283,987 B2
Optical scanner
Yuichi Toyota, Kariya (JP); Taro Beppu, Kariya (JP); Chihiro Moriguchi, 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. 18/191,332.
Application 18/191,332 is a continuation of application No. PCT/JP2021/034112, filed on Sep. 16, 2021.
Claims priority of application No. 2020-165997 (JP), filed on Sep. 30, 2020.
Prior Publication US 2023/0239047 A1, Jul. 27, 2023
Int. Cl. H04B 10/11 (2013.01); G01S 7/4911 (2020.01)
CPC H04B 10/11 (2013.01) [G01S 7/4911 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical scanner comprising:
a light source;
an optical phased array that is configured to implement scanning by a light beam by individually controlling phases of a plurality of branched lights into which light supplied from the light source is branched, using a scanning phase amount, and radiating light from an antenna array that has a plurality of antenna elements;
a monitoring light receiving unit that is configured to receive light radiated from the optical phased array; and
a signal processing unit that is configured to detect characteristics of the light beam from a detection result of the monitoring light receiving unit and generate a phase adjustment amount for correcting the scanning phase amount such that a detection value of the characteristics coincides with a design value prepared in advance.