Lidar device
AssigneeSOS LAB Co., Ltd.
InventorsJi Seong Jeong, Jun Hwan Jang, Dong Kyu Kim, Sung Ui Hwang, Gyeong Hwan Shin, Bum Sik Won
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Abstract
A light detection and ranging (lidar) device includes: a lower base; an upper base; a laser emitting unit for emitting a laser in a form of a point light source; a nodding mirror for transforming the laser in the form of the point light source to a line beam pattern which is perpendicular to the lower base, wherein the nodding mirror reflects the laser emitted from the laser emitting unit; a polygonal mirror for transforming the line beam pattern to a plane beam pattern and receiving a laser reflected from an object; and a sensor unit for receiving the laser reflected from the object via the polygonal mirror.
Claims12
A light detection and ranging (lidar) device comprising:
- a laser emitting unit which emits a laser in the form of a point light source;
- a nodding mirror which reflects the laser received from the laser emitting unit while nodding along a horizontal axis so as to transform the laser in the form of the point light source to a line beam pattern;
- a polygonal mirror which transforms the laser in the form of the line beam pattern to a plane beam pattern by rotating along a vertical axis and receives the laser reflected by an object;
- and
- a sensor unit which receives the laser reflected by the object via the polygonal mirror,
- wherein when viewed from above, a first light path from the laser emitting unit to the nodding mirror, a second optical path from the nodding mirror to the polygonal mirror, and a third light path from the polygonal mirror to the sensor unit are located on one straight line,
- wherein the laser emitting unit, the nodding mirror, and the sensor unit are arranged on a same plane, and
- wherein a distance between the vertical axis and the same plane is smaller than a rotational radius of the polygonal mirror so as to allow the polygonal mirror to receive the laser reflected by the nodding mirror, and greater than half of the rotational radius.
Dependencies are inferred from the claim text.