Laser light direction adjustment device and laser radar

Abstract

The present disclosure relates to a laser light emitting direction adjustment device and a laser radar. A pressing block is arranged on a base and a mounting hole is formed between the pressing block and the base for a laser collimation element to pass through, and a connecting hole connected to the mounting hole is arranged at the same end of the pressing block and the base, and elastic elements are respectively arranged in the two connecting holes, and the elastic elements can move in the corresponding connecting holes, so that the laser collimation element can move in the mounting hole along the vertical direction to adjust the light emitting angle of the laser emitted by the laser collimation element. That is, the elastic element moves along the connecting hole, thereby driving the laser collimation element to move up and down in the mounting hole, so as to achieve multi-angle adjustment of the laser light emitting direction, so as to ensure that the laser radar presents an image directly in front of the field of view, thereby avoiding the problem of easily causing safety accidents due to the image presented by the laser radar not being the image directly in front of the field of view.

Description

Technical Field

[0001] The present disclosure relates to the technical field of laser light emission direction control, and in particular to a laser light emission direction adjustment device and a laser radar. Background Art

[0002] LiDAR usually consists of a transmitter and a receiver. The transmitter generates and emits a laser beam into the surrounding three-dimensional space, which is then reflected by the object in front of the field of view and received by the receiver. Since the speed of light is known, LiDAR can calculate the distance of different objects in space based on the time difference between transmission and reception, and form an image in the form of a point cloud.

[0003] Existing LiDAR cannot achieve multi-angle adjustment of the laser light emission direction, especially it is difficult to ensure that the LiDAR presents the image directly in front of the field of view. In the use scenarios of LiDAR, such as cars or rail transit trains equipped with LiDAR, this defect will result in obstacles in the direction of the car's travel not being effectively sensed, causing serious safety accidents. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a laser light emission direction adjustment device and a laser radar.

[0005] In a first aspect, the present disclosure provides a laser light emission direction adjustment device, comprising a laser collimation element, a base and a pressing block;

[0006] The pressing block is arranged on the base and is enclosed with the base to form a mounting hole through which the laser alignment element can pass;

[0007] The pressing block and one end of the base are both provided with a connecting hole connected to the mounting hole, and an elastic element that can abut against the laser collimation element is respectively provided in the two connecting holes, and the elastic element can move in the corresponding connecting hole, so that the laser collimation element can move in the mounting hole along the vertical direction under the action of the elastic element to adjust the light output angle of the laser emitted by the laser collimation element.

[0008] According to an embodiment of the present disclosure, a first adjustment hole is provided at the other end of the pressing block, a second adjustment hole is provided at a position on the base corresponding to the first adjustment hole, and an adjustment element is provided in the first adjustment hole and the second adjustment hole and can move in the first adjustment hole and the second adjustment hole, so that the laser collimation element can move in the mounting hole along the axial direction of the mounting hole.

[0009] According to an embodiment of the present disclosure, the connection hole provided on the base and the connection hole provided on the pressing block are arranged at intervals along the circumference of the mounting hole.

[0010] According to an embodiment of the present disclosure, the connection hole provided on the base and the connection hole provided on the pressing block are symmetrically arranged relative to a connection surface between the base and the pressing block.

[0011] According to an embodiment of the present disclosure, the connection hole provided on the base and the connection hole provided on the pressing block are both inclined relative to the connection surface.

[0012] According to an embodiment of the present disclosure, the connection holes provided on the base and the connection holes provided on the pressing block have an inclination angle range of 30°-60° relative to the inclined surface.

[0013] According to an embodiment of the present disclosure, the pressing block includes a first pressing block and a second pressing block, and the first pressing block and the second pressing block are arranged at intervals along the length direction of the base;

[0014] The mounting hole is formed between the first pressing block and the base, and between the second pressing block and the base; the first pressing block is provided with the connecting hole, and the second pressing block is provided with the first adjusting hole.

[0015] According to an embodiment of the present disclosure, a first fastening hole is provided on the first pressing block, a second fastening hole is formed on the base at a position corresponding to the first fastening hole, and a fastener is provided in the first fastening hole and the second fastening hole to fix the first pressing block on the base.

[0016] According to an embodiment of the present disclosure, a movable gap is arranged between the laser alignment element and the mounting hole enclosed by the first pressing block and the base.

[0017] In a second aspect, the present disclosure also provides a laser radar, including a laser light emission direction adjustment device.

[0018] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0019] The present disclosure provides a laser light emitting direction adjustment device and a laser radar, the laser light emitting direction adjustment device includes a laser collimating element, a base and a pressing block. The pressing block is arranged on the base and enclosed with the base to form a mounting hole for the laser collimating element to pass through, and a connecting hole connected to the mounting hole is arranged at the same end of the pressing block and the base, and an elastic element that can abut against the laser collimating element is arranged in each of the two connecting holes, and the elastic element can move in the corresponding connecting hole, so that the laser collimating element can move in the mounting hole along the vertical direction to adjust the light emitting angle of the laser emitted by the laser collimating element. That is to say, by moving the elastic element in the pressing block along the connecting hole on the pressing block and the elastic element in the base along the connecting hole on the base, the laser collimating element is driven to move up and down in the mounting hole, so as to achieve multi-angle adjustment of the laser light emitting direction, so as to ensure that the laser radar presents an image directly in front of the field of view, thereby avoiding the problem of easily causing safety accidents due to the image presented by the laser radar not being the image directly in front of the field of view. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 This is a top view of the laser light emission direction adjustment device described in an embodiment of the present disclosure.

[0023] Figure 2 This is a stereoscopic diagram of the laser light emission direction adjustment device described in an embodiment of the present disclosure.

[0024] Among them, 1. laser alignment element; 2. base; 21. second adjustment hole; 22. second fastening hole; 3. pressure block; 31. first adjustment hole; 32. first fastening hole; 33. first pressure block; 34. second pressure block; 4. mounting hole; 5. connecting hole; 6. adjustment element; 7. fastener; 8. elastic element. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0027] Embodiment 1

[0028] Reference Figure 1 to Figure 2 As shown, this embodiment provides a laser light direction adjustment device, which can be used to adjust the laser light direction. Specifically, the laser light direction adjustment device includes a laser collimating element 1, a base 2 and a pressing block 3. The laser collimating element 1 can be a collimating lens.

[0029] The pressing block 3 is arranged on the base 2 and encloses the base 2 to form a mounting hole 4 through which the laser alignment element 1 can pass. The base 2 is used to support the laser alignment element 1, and the pressing block 3 is used to fix the laser alignment element 1. The shapes and materials of the base 2 and the pressing block 3 can be selected according to actual needs.

[0030] Among them, the same end of the pressing block 3 and the base 2 is provided with a connecting hole 5 connected to the mounting hole 4, and an elastic element 8 that can abut against the laser collimation element 1 is respectively provided in the two connecting holes 5, and the elastic element 8 can move in the corresponding connecting hole 5, so that the laser collimation element 1 can move in the mounting hole 4 along the vertical direction under the action of the elastic element 8 to adjust the light output angle of the laser emitted by the laser collimation element 1.

[0031] When implementing it, refer to Figure 1 and Figure 2 As shown, a connecting hole 5 can be formed at the rear ends of the pressing block 3 and the base 2 (i.e., the end close to the laser), and the connecting hole 5 on the base 2 passes through the base 2 to extend to the mounting hole 4, and the connecting hole 5 on the pressing block 3 passes through the pressing block 3 to extend to the mounting hole 4, so that the elastic element 8 in the connecting hole 5 of the base 2 or the elastic element 8 in the connecting hole 5 of the pressing block 3 can abut against the laser collimation element 1, thereby providing the laser collimation element 1 with sufficient thrust force, so that the laser collimation element 1 moves in the vertical direction, thereby realizing multi-angle adjustment of the laser light emitting direction, to ensure that the laser radar presents an image directly in front of the field of view, thereby avoiding the problem of easily causing safety accidents due to the image presented by the laser radar not being the image directly in front of the field of view.

[0032] Exemplarily, when the laser alignment element 1 needs to be moved downward, a downward force is applied to the elastic element 8 in the pressing block 3, so that the elastic element 8 in the pressing block 3 moves downward and abuts against the laser alignment element 1, and pushes the laser alignment element 1 to move downward, and at this time, the elastic element 8 in the pressing block 3 is compressed to a contracted state under the pressure of the laser alignment element 1; when the laser alignment element 1 needs to be moved upward, the elastic element 8 in the pressing block 3 can be released, and at this time, the elastic element 8 in the base 2 can move upward under the action of its own elastic restoring force, and push the laser alignment element 1 to move upward, and at this time, the elastic element 8 in the pressing block 3 can move in the connecting hole 5 of the pressing block 3 in a direction away from the laser alignment element 1.

[0033] For example, in this embodiment, the elastic element 8 disposed in the base 2 may be a spring or a spring sheet. The elastic element 8 disposed in the pressing block 3 may be a jackscrew, a pin or a screw.

[0034] In summary, the laser light emitting direction adjustment device of the present embodiment drives the laser collimation element 1 to move up and down in the mounting hole 4 by moving the elastic element 8 in the pressing block 3 along the connecting hole 5 on the pressing block 3 and the elastic element 8 in the base 2 along the connecting hole 5 on the base 2, thereby realizing multi-angle adjustment of the laser light emitting direction, thereby adjusting the position of the laser collimation element 1 to adjust the image presented by the laser radar to be an image directly in front of the field of view, thereby avoiding the problem of safety accidents easily caused by the image presented by the laser radar not being an image directly in front of the field of view.

[0035] In addition to the elastic element 8 being able to drive the laser collimating element 1 to move in the vertical direction to change the light output angle and realize the adjustable light output angle, in this embodiment, Figure 1 and Figure 2 As shown, a first adjustment hole 31 is provided at the other end of the pressing block 3, and a second adjustment hole 21 is provided at a position corresponding to the first adjustment hole 31 on the base 2. The adjusting element 6 is provided in the first adjustment hole 31 and the second adjustment hole 21 and can move in the first adjustment hole 31 and the second adjustment hole 21, so that the laser collimation element 1 can move in the mounting hole 4 along the axial direction of the mounting hole 4.

[0036] Exemplarily, the first adjustment hole 31 and the second adjustment hole 21 may both be threaded holes, and the adjustment element 6 may be a fastening connection member such as a bolt or a screw.

[0037] That is, a threaded hole can be provided at the rear end of the pressing block 3 (i.e., the end away from the laser), and a threaded hole is correspondingly provided on the base 2. Before adjustment, the fastening connector is provided in the threaded holes of the base 2 and the pressing block 3 and pre-tightened. When adjustment is required, the fastening connector can be rotated in the direction of loosening the fastening connector, and at this time, the laser collimation element 1 can be allowed to move along the axial direction of the mounting hole 4, thereby changing the displacement of the laser collimation element 1 in the horizontal direction.

[0038] For example, when the laser collimator 1 moves downward excessively, the elastic element 8 in the pressing block 3 can be loosened to a certain extent, and the laser collimator 1 will rebound accordingly under the action of the elastic element 8 in the base 2. The adjusting element 6 and the elastic element 8 are reciprocated until the laser collimator 1 points to any direction required by the customer, thereby driving the light emitting direction to be adjusted arbitrarily.

[0039] Therefore, the laser light emission direction adjustment device of the present embodiment can simultaneously change the displacement of the laser collimation element 1 in the horizontal direction and the vertical direction so that the light emission direction of the laser radar having the laser light emission direction adjustment device is located in the center of the horizontal field of view and the vertical field of view, thereby ensuring that the viewing angle presented by the laser radar is directly in front.

[0040] In a specific implementation, the connection holes 5 provided on the base 2 and the connection holes 5 provided on the pressing block 3 are arranged at intervals along the circumference of the mounting hole 4. That is, the connecting line between the connection holes 5 of the base 2 and the connection holes 5 of the pressing block 3 can be either a vertical line or an oblique line. Figure 1 As shown, the connection hole 5 provided on the base 2 and the connection hole 5 provided on the pressing block 3 are symmetrically arranged relative to the connection surface between the base 2 and the pressing block 3, that is, the connecting line of the connection hole 5 of the base 2 and the connection hole 5 of the pressing block 3 is a vertical line.

[0041] Furthermore, the connection holes 5 provided on the base 2 and the connection holes 5 provided on the pressing block 3 are both inclined relative to the connection surface. In specific implementation, the inclination angle of the connection holes 5 provided on the base 2 and the connection holes 5 provided on the pressing block 3 relative to the inclined surface ranges from 30° to 60°. For example, it can be 30°, 45° or 60°. In this embodiment, the inclination angle of the connection holes 5 provided on the base 2 and the connection holes 5 provided on the pressing block 3 relative to the inclined surface is 45°.

[0042] In a specific implementation, the pressing block 3 includes a first pressing block 33 and a second pressing block 34. The first pressing block 33 and the second pressing block 34 can be independently arranged on the base 2, or can be connected to form a whole. Figure 1 As shown, the first pressing block 33 and the second pressing block 34 are arranged along the length direction of the base 2 (i.e. Figure 1The first pressing block 33 and the base 2, and the second pressing block 34 and the base 2 are arranged at intervals. The first pressing block 33 is provided with a connection hole 5, and the second pressing block 34 is provided with a first adjustment hole 31.

[0043] In a specific implementation, a first fastening hole 32 is provided on the first pressing block 33, a second fastening hole 22 is formed on the base 2 at a position corresponding to the first fastening hole 32, and the fastener 7 is provided in the first fastening hole 32 and the second fastening hole 22 to fix the first pressing block 33 on the base 2. The first fastening hole 32 and the second fastening hole 22 can be threaded holes, and the fastener 7 can be a screw or a screw. During the entire adjustment process, the fastener 7 is always tightened in the first fastening hole 32 and the second fastening hole 22.

[0044] In order to avoid the restriction of the movement of the laser alignment element 1 caused by the fastener 7 disposed in the first fastening hole 32 and the second fastening hole 22, a movable gap may be provided between the laser alignment element 1 and the mounting hole 4 enclosed by the first pressing block 33 and the base 2, thereby providing the laser alignment element 1 with a moving space in the vertical or horizontal direction. The specific size of the movable gap is not limited in this embodiment.

[0045] Embodiment 2

[0046] Reference Figure 1 and Figure 2 As shown, this embodiment also provides a laser radar, including the above-mentioned laser light emission direction adjustment device.

[0047] The specific structure and implementation principle of the laser light output direction adjustment device in this embodiment are the same as the structure of the laser light output direction adjustment device provided in Example 1, and can bring the same or similar technical effects. They will not be described one by one here, and please refer to the description of Example 1 for details.

[0048] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser light direction adjustment device, characterized in that: The invention comprises a laser collimating element (1), a base (2) and a pressing block (3); the collimating element (1) is a collimating lens; the pressing block (3) is arranged on the base (2) and encloses a mounting hole (4) for the laser collimating element (1) to pass through the pressing block (3); one end of the pressing block (3) and the base (2) are both provided with a connecting hole (5) connected to the mounting hole (4); an elastic element (8) capable of abutting against the laser collimating element (1) is respectively provided in the two connecting holes (5), and the elastic element (8) can move in the corresponding connecting hole (5), so that the laser collimating element (1) can move in the mounting hole (4) in the vertical direction under the action of the elastic element (8), so as to adjust the light emission angle of the laser emitted by the laser collimating element (1); A first adjustment hole (31) is provided at the other end of the pressing block (3), a second adjustment hole (21) is provided at a position on the base (2) corresponding to the first adjustment hole (31), and an adjustment element (6) is provided in the first adjustment hole (31) and the second adjustment hole (21) and is movable in the first adjustment hole (31) and the second adjustment hole (21), so that the laser collimation element (1) can move in the mounting hole (4) along the axial direction of the mounting hole (4).

2. The laser light emission direction adjustment device according to claim 1, characterized in that: The connection hole (5) provided on the base (2) and the connection hole (5) provided on the pressing block (3) are arranged at intervals along the circumference of the mounting hole (4).

3. The laser light emission direction adjustment device according to claim 2, characterized in that: The connection hole (5) provided on the base (2) and the connection hole (5) provided on the pressing block (3) are symmetrically arranged relative to a connection surface between the base (2) and the pressing block (3).

4. The laser light emission direction adjustment device according to claim 3, characterized in that: The connection hole (5) provided on the base (2) and the connection hole (5) provided on the pressing block (3) are both arranged obliquely relative to the connection surface.

5. The laser light emission direction adjustment device according to claim 4, characterized in that: The connection hole (5) provided on the base (2) and the connection hole (5) provided on the pressing block (3) have an inclination angle range of 30°-60° relative to the inclined surface.

6. The laser light emission direction adjustment device according to any one of claims 1 to 5, characterized in that: The pressing block (3) comprises a first pressing block (33) and a second pressing block (34); the first pressing block (33) and the second pressing block (34) are arranged at intervals along the length direction of the base (2); the first pressing block (33) and the base (2), as well as the second pressing block (34) and the base (2), are enclosed to form the mounting hole (4); the first pressing block (33) is provided with the connecting hole (5), and the second pressing block (34) is provided with the first adjusting hole (31).

7. The laser light emission direction adjustment device according to claim 6, characterized in that: A first fastening hole (32) is provided on the first pressing block (33), a second fastening hole (22) is formed on the base (2) at a position corresponding to the first fastening hole (32), and a fastener (7) is provided in the first fastening hole (32) and the second fastening hole (22) to fix the first pressing block (33) on the base (2).

8. The laser light emission direction adjustment device according to claim 6, characterized in that: A movable gap is provided between the laser collimation element (1) and the mounting hole (4) enclosed between the first pressing block (33) and the base (2).

9. A laser radar, characterized in that: It comprises the laser light emission direction regulating device as claimed in any one of claims 1 to 8.

Images