KR-20260068022-A - LIDAR APPARATUS WITH A SIDE-BY-SIDE TRANSCEIVER MODULE

KR20260068022AKR 20260068022 AKR20260068022 AKR 20260068022AKR-20260068022-A

Abstract

The present invention relates to a LiDAR device having a left-right arranged transmitting and receiving module, comprising: a transmitting unit that emits laser light and converts it into a linear laser beam through at least one lens for output; a scanning mirror unit that reflects and emits the laser beam output through the transmitting unit to scan a preset scanning angle area, and incidents and reflects reflected light caused by a target object; a receiving unit positioned opposite to the transmitting unit with respect to the scanning mirror unit to receive the reflected light reflected through the scanning mirror unit; and a housing unit in which the transmitting unit, the scanning mirror unit, and the receiving unit are housed; thereby, the device size can be reduced compared to a stacked structure, and long-distance object detection performance and durability can be improved.

Inventors

김동욱
임채현
주윤재
전소라
서지연
이우일
이용성
박상규

Assignees

오토엘 주식회사

Dates

Publication Date: 20260513
Application Date: 20260402

Claims (10)

A light transmitting unit that emits laser light and converts it into a linear laser beam through at least one lens for output; A scanning mirror unit that reflects and emits the laser beam output through the light transmitting unit to scan a preset scanning angle area, and incidents and reflects reflected light reflected by a target object; A light receiving unit positioned opposite to the light transmitting unit with respect to the scanning mirror unit and receiving the reflected light reflected through the scanning mirror unit; and It includes a housing portion in which the light transmitting portion, scanning mirror portion, and light receiving portion are installed; The above-mentioned light transmitting unit, scanning mirror unit, and light receiving unit are arranged left and right, and The starting point of the field of view of the laser beam is adjusted by controlling the output of the laser beam at the transmitting unit as if a virtual first aperture exists between the transmitting unit and the scanning mirror unit or at the rear end of the transmitting side of the scanning mirror unit, wherein the virtual first aperture exists outside the optical system constituting the transmitting unit. In order to control the amount and path of the laser beam by adjusting the size of the path through which the laser beam passes, the starting point of the angle of view for the vertical field of view of the laser beam output through the transmitting unit is moved so as to emit it to the scanning mirror unit so as to lower the product height of the LiDAR while maintaining a wide vertical field of view when provided at the rear end of the transmitting unit. When provided at the rear end of the light transmission side of the scanning mirror unit, the starting point of the angle of view regarding the vertical field of view of the laser beam reflected through the scanning mirror unit is moved to emit it toward the target object so as to maintain a wide vertical angle of view. LiDAR device having left-right arranged transmitting and receiving modules.
In claim 1, The above-mentioned light source is, A module housing having a triangular front section, wherein a support member is disposed at an orthogonal point between the laser light and the scanning mirror section on the front section; A light source provided inside the rear end of the above module housing and emitting the laser light; At least one first lens that converts the laser light emitted from the light source into the laser beam of a linear form; and A reflective mirror provided on the inclined surface of the above-mentioned support member, positioned at the front, rear, or between the first lens to reflect the laser beam; A lidar device having a left-right arranged transmitting and receiving module including
In claim 1, The above-mentioned light source is, A module housing provided such that the output direction faces the scanning mirror unit; A light source provided inside the rear end of the above module housing for emitting the laser light; and At least one first lens that converts the laser light emitted from the light source into a linear laser beam; A lidar device having a left-right arranged transmitting and receiving module including
In claim 2 or claim 3, The above scanning mirror unit is, A multifaceted mirror having at least two reflective surfaces LiDAR device having left-right arranged transmitting and receiving modules.
In claim 4, The above light receiving unit is, At least one second lens for concentrating the reflected light reflected through the scanning mirror unit; and A sensor that receives the reflected light concentrated through the second lens; A lidar device having a left-right arranged transmitting and receiving module including
A light transmitting unit that emits laser light and converts it into a linear laser beam through at least one lens for output; A scanning mirror unit that reflects and emits the laser beam output through the light transmitting unit to scan a preset scanning angle area, and incidents and reflects reflected light reflected by a target object; A light receiving unit positioned opposite to the light transmitting unit with respect to the scanning mirror unit and receiving the reflected light reflected through the scanning mirror unit; and It includes a housing portion in which the light transmitting portion, scanning mirror portion, and light receiving portion are installed; The above-mentioned light transmitting unit, scanning mirror unit, and light receiving unit are arranged left and right, and The starting point of the angle of view of the reflected light is adjusted by controlling the incidence of the reflected light at the light receiving unit as if a virtual second aperture exists between the light receiving unit and the light receiving unit, wherein the virtual second aperture exists outside the optical system constituting the light receiving unit. In order to control the amount and path of the reflected light by adjusting the size of the path through which the reflected light passes, the starting point of the angle of view for the vertical field of view of the reflected light reflected and incident on the target object is moved so as to be incident on the scanning mirror unit so as to lower the product height of the LiDAR while maintaining a wide vertical field of view, when provided at the light receiving and measuring end of the scanning mirror unit. When provided at the front end of the light receiving unit, the starting point of the angle of view regarding the vertical field of view of the reflected light reflected through the scanning mirror unit is moved so that a wide vertical field of view can be maintained, thereby causing the light to be incident on the light receiving unit. LiDAR device having left-right arranged transmitting and receiving modules.
In claim 6, The above-mentioned light source is, A module housing having a triangular front section, wherein a support member is disposed at an orthogonal point between the laser light and the scanning mirror section on the front section; A light source provided inside the rear end of the above module housing and emitting the laser light; At least one first lens that converts the laser light emitted from the light source into the laser beam of a linear form; and A reflective mirror provided on the inclined surface of the above-mentioned support member, positioned at the front, rear, or between the first lens to reflect the laser beam; A lidar device having a left-right arranged transmitting and receiving module including
In claim 6, The above-mentioned light source is, A module housing provided such that the output direction faces the scanning mirror unit; A light source provided inside the rear end of the above module housing for emitting the laser light; and At least one first lens that converts the laser light emitted from the light source into a linear laser beam; A lidar device having a left-right arranged transmitting and receiving module including
In claim 7 or claim 8, The above scanning mirror unit is, A multifaceted mirror having at least two reflective surfaces LiDAR device having left-right arranged transmitting and receiving modules.
In claim 9, The above light receiving unit is, At least one second lens for concentrating the reflected light reflected through the scanning mirror unit; and A sensor that receives the reflected light concentrated through the second lens; A lidar device having a left-right arranged transmitting and receiving module including

Description

LiDAR apparatus with a side-by-side transceiver module The present invention relates to a LiDAR device having a left-right arranged transmitting and receiving module, wherein a transmitting part and a receiving part are arranged facing each other on the left and right sides with respect to a scanning mirror part, and a virtual aperture is placed at the front of a target object, and a laser light emitted from a light source is converted into a linear laser beam through at least one lens and reflected through the scanning mirror part, thereby reducing the device size compared to a stacked structure and improving long-distance object detection performance and durability. This invention was filed with the support of the "2024 Global Startup Commercialization Support Program" by Gyeonggi Province and the Gyeonggi Economic & Science Promotion Agency. As is well known, LiDAR (Light Detection and Ranging) is a device that emits laser light from a transmitting module, reflects it off surrounding objects such as people or vehicles, and detects the reflected light with a receiving module to measure accurate distance and location information using time intervals and the speed of light. It is widely known as a sensor that measures the distance to target objects, recognizes objects, and precisely displays the surrounding environment. Because such LiDAR enables highly precise distance measurement, it is being applied to various industries such as autonomous driving, ADAS, unmanned robots, terrain analysis, security systems, and surveillance systems. As it can be used for purposes such as object recognition, terrain navigation, and collision avoidance, the scope of its application industries is continuously expanding. Recently, the automotive industry has shown a trend of mounting LiDAR devices on vehicle roofs to secure a wider vertical field of view and visibility. Consequently, it is necessary to lower the height of the LiDAR product to minimize its impact on the vehicle's exterior and air resistance. Furthermore, as the device must be mountable on various platforms—including robots and drones as well as automobiles—miniaturized and lightweight LiDARs are being developed. However, when using conventional integrated transceiver modules, there is a problem in that the device height (i.e., device size) increases by the sum of the heights of the transceiver module and the transceiver module, and there are significant difficulties regarding height constraints when implementing the LiDAR sensor optical mechanism in accordance with the goal of achieving high performance. Furthermore, when using conventional separate transceiver modules, an optical component that reflects the beam emitted from the transceiver is placed in front of the receiver module. Since the beam incident on the receiver module is obscured by the area of this optical component, the signal-to-noise ratio is reduced, which limits object detection. In particular, since LiDAR used in autonomous driving must predict and respond to potential hazards over long distances, accurate object detection over long range is required. Furthermore, since LiDAR applied to autonomous vehicles must provide accurate data even in various surrounding environments such as road vibrations, it must operate consistently under environmental conditions such as vibration and shock, and to this end, durability must also be guaranteed. To solve the aforementioned problems, there is a need to develop a LiDAR device that can reduce device size and improve long-range object detection performance and durability. FIG. 1 is a drawing illustrating a lidar device having a left-right arranged light-receiving module according to an embodiment of the present invention, and FIGS. 2 to 11 are drawings for explaining the detailed configuration of a lidar device having a left-right arranged light-receiving module according to an embodiment of the present invention. The advantages and features of the embodiments of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components. In describing the embodiments of the present invention, specific descriptions of known functions or configurations will be omitted if it is determined that such detailed descriptions could unnecessarily obscure the essence of the invention. Furthermore, the terms described below are defined in consideration of their functions in the embodiments of the present i