US 12,270,945 B2
Optical ranging device, laser light emitting device, and method for manufacturing the same
Teiyu Kimura, Kariya (JP); Kenichi Yanai, Kariya (JP); Shinji Kashiwada, Kariya (JP); and Yoshihide Tachino, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jun. 10, 2021, as Appl. No. 17/344,417.
Application 17/344,417 is a continuation of application No. PCT/JP2019/047775, filed on Dec. 6, 2019.
Claims priority of application No. 2018-234447 (JP), filed on Dec. 14, 2018; and application No. 2019-204360 (JP), filed on Nov. 12, 2019.
Prior Publication US 2021/0341587 A1, Nov. 4, 2021
Int. Cl. G01S 7/481 (2006.01); G01S 7/484 (2006.01)
CPC G01S 7/4817 (2013.01) [G01S 7/484 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical ranging device that uses laser light, comprising:
a light emitting section provided with a semiconductor laser element including a light emitting region having a configuration in which a length thereof in a first direction is more than that in a second direction intersecting the first direction;
a light receiving section that detects reflected light of the laser light emitted from the light emitting section; and
a measuring section that measures a distance to an object based on a time from emission of the light from the light emitting section to reception of the light by the light receiving section, wherein
the light emitting section includes a plurality of light emitting regions that are separated from each other in the second direction and abut or partially overlap each other in the first direction,
the light receiving section includes a plurality of light receiving elements in a direction corresponding to the first direction, and
a width of a light receiving region in a direction corresponding to the second direction of the light receiving elements is equal to or more than a length corresponding to a gap distance of the light emitting regions in the second direction.