US 11,953,604 B2
LIDAR device and method for calculating distance to object
Teiyuu Kimura, Kariya (JP); Noriyuki Ozaki, Kariya (JP); and Akifumi Ueno, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Apr. 20, 2023, as Appl. No. 18/303,688.
Application 18/303,688 is a division of application No. 16/778,781, filed on Jan. 31, 2020, granted, now 11,668,832.
Prior Publication US 2023/0273322 A1, Aug. 31, 2023
Int. Cl. G01S 17/93 (2020.01); G01C 3/08 (2006.01); G01S 7/481 (2006.01); G02B 26/10 (2006.01)
CPC G01S 17/93 (2013.01) [G01C 3/08 (2013.01); G01S 7/481 (2013.01); G02B 26/105 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A LIDAR device for measuring a distance to an object in a scanning zone, the device comprising:
a light source configured to emit a light beam;
a light receiver configured to receive a return beam reflected by the object in the scanning zone;
a rotatable mirror configured to reflect the light beam emitted from the light source toward the scanning zone;
a motor configured to rotate the mirror back and forth between a first position and a second position;
an angle sensor configured to detect a rotation angle of the mirror and to output a detection signal indicative of the rotation angle of the mirror at a plurality of predetermined angle intervals during each rotation cycle between the first position and the second position of the mirror; and
a controller coupled to the light source and the angle sensor, the controller being configured to output a control signal to the light source to emit a light beam when the detection signal from the angle sensor matches any one of a plurality of predetermined target rotation angles of the mirror.