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.
Claims20
A light detection and ranging (LiDAR) device for measuring a distance by using a laser, the LiDAR device comprising:
- a laser emitter configured to generate a laser;
- a first sensor configured to detect a first light and generate a first result, wherein the first light is a first reflected light of the laser from an object in a scanning area;
- a second sensor, separate from the first sensor, configured to detect a second light and generate a second result different from the first result, wherein the second light is a second reflected light of the laser from the object in the scanning area;
- and
- a rotating polygonal mirror configured to rotate about a rotation axis disposed between the first sensor and the second sensor and between the laser emitter and the second sensor,
- wherein the rotating polygonal minor comprises at least three reflecting surfaces, including a first reflecting surface and a second reflecting surface,
- wherein the first reflecting surface comprises a projection portion and a first receiving portion,
- wherein the second reflecting surface comprises a second receiving portion,
- wherein, at a first time point:
- the first reflecting surface is configured to face the laser emitter and the first sensor without facing the second sensor,
- the projection portion is configured to reflect the laser emitted by the laser emitter to the scanning area,
- the first receiving portion is configured to receive and reflect the first light directly to the first sensor,
- the second reflecting surface is configured to face the second sensor without facing the laser emitter or the first sensor, and
- the second receiving portion is configured to receive and reflect the second light directly to the second sensor,
- wherein an area of the first receiving portion is smaller than an area of the second receiving portion, and
- wherein, at second time points subsequent to the first time point, the first sensor and the second sensor are configured to generate the first result and the second result, respectively.
Dependencies are inferred from the claim text.