# US 2021/0333364 A1 · Lidar sensing device

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- Number: US 2021/0333364 A1
- Document ID: US20210333364A1
- Status: Published application
- Kind: A1
- Application number: 17/372,486
- Filed: 2021-07-11
- Published: 2021-10-28
- Earliest claimed: 2018-07-02
- Assignees: Hyundai Mobis Co., Ltd.
- Applicants: Hyundai Mobis Co., Ltd.
- Inventors: Won Gyum KIM; Young Shin KIM; Kyung Rin KIM; Sung Eun JO
- Web page: https://patentgrep.com/patent/US20210333364A1

## CPC

- G01S 7/4813: {Housing arrangements}
- G01S 17/931: of land vehicles
- G01S 7/4812: {transmitted and received beams following a coaxial path}
- G01S 7/4814: {of transmitters alone}
- G01S 7/4816: {of receivers alone}
- G01S 7/4817: {relating to scanning}
- G01S 17/08: for measuring distance only (indirect measurement G01S17/46; active triangulation systems G01S17/48)
- G01S 17/42: Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES

## Abstract

A LiDAR sensing device including: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.

## Claims

### Claim 1

A Light Detection and Ranging (LiDAR) sensing device, comprising:
a sensing light source configured to radiate sensing light;
a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source;
a scanner configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target;
a light receiving lens configured to pass the incident light reflected from the scanner;
a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and
an optical detector into which the incident light reflected from the light receiving reflector is incident,
wherein the light transmitting reflector is disposed such that a blockage area having a size corresponding to a size of the light transmitting reflector is formed in the incident light detected by the optical detector.

### Claim 2 (depends on 1)

The LiDAR sensing device of claim 1, wherein a size of the blockage area corresponds to a width of the light transmitting reflector perpendicular to a traveling direction of the incident light reflected from the scanner.

### Claim 3 (depends on 1)

The LiDAR sensing device of claim 1, wherein a size of the blockage area is independent of a shape of the sensing light source.

### Claim 4

A Light Detection and Ranging (LiDAR) sensing device, comprising:
a sensing light source configured to radiate sensing light;
a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source;
a scanner configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target;
a light receiving lens configured to pass the incident light reflected from the scanner;
a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and
an optical detector into which the incident light reflected from the light receiving reflector is incident,
wherein the sensing light source is arranged to form a blockage area corresponding to a size of the sensing light source in the incident light detected by the optical detector.

### Claim 5 (depends on 4)

The LiDAR sensing device of claim 4, wherein the size of the blockage area corresponds to a width of the sensing light source perpendicular to a traveling direction of the incident light reflected from the scanner.

### Claim 6 (depends on 4)

The LiDAR sensing device of claim 4, wherein the light source unit extends in at least one of the light receiving reflector and the light receiving lens so as to be parallel to a traveling direction of the incident light reflected from the scanner.