US 12,352,892 B2
Optical distance measuring device
Noriyuki Ozaki, Kariya (JP); Mitsuhiro Kiyono, Kariya (JP); Teiyu Kimura, Kariya (JP); and Shinji Kashiwada, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Feb. 5, 2021, as Appl. No. 17/169,238.
Application 17/169,238 is a continuation of application No. PCT/JP2019/030434, filed on Aug. 2, 2019.
Claims priority of application No. 2018-150303 (JP), filed on Aug. 9, 2018.
Prior Publication US 2021/0181308 A1, Jun. 17, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/481 (2006.01); G01C 3/06 (2006.01); G01J 1/44 (2006.01); G01S 7/48 (2006.01); G01S 7/486 (2020.01); G01S 7/4861 (2020.01); G01S 7/4863 (2020.01); G01S 7/4865 (2020.01); G01S 17/08 (2006.01); G01S 17/89 (2020.01)
CPC G01S 7/481 (2013.01) [G01C 3/06 (2013.01); G01J 1/44 (2013.01); G01S 7/4808 (2013.01); G01S 7/4817 (2013.01); G01S 7/486 (2013.01); G01S 7/4861 (2013.01); G01S 7/4863 (2013.01); G01S 7/4865 (2013.01); G01S 7/4868 (2013.01); G01S 17/08 (2013.01); G01S 17/89 (2013.01); G01J 2001/4466 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical distance measuring device comprising:
a light source unit configured to irradiate a measurement region with irradiation light;
a light receiving unit comprising a light receiving surface including a plurality of light receiving elements configured to receive reflected light from a range including the measurement region corresponding to irradiation with the irradiation light and outputs a signal corresponding to a light receiving state of the reflected light for each of the plurality of light receiving elements;
a scanning unit positioned between the measurement region and the light receiving unit, the scanning unit configured to receive the reflected light from the range including the measurement region and reflect the reflected light to predetermined positions on the light receiving surface; and
a measurement unit configured to measure a distance to an object in the measurement region by using the signal outputted from the light receiving unit, wherein
the light receiving unit has a function of selecting a light receiving element of the plurality of light receiving elements that outputs the signal so that a light receiving position at which the reflected light is received is variable, and the light receiving unit changes the light receiving position to a plurality of positions with respect to a position of the reflected light,
the light receiving unit changes the light receiving position to a plurality of positions by moving the light receiving position toward a predetermined first direction, and
every time a light receiving process for irradiation with the irradiation light in a single azimuth is completed, the light receiving unit moves the light receiving position in a direction opposite to the first direction.