Laser module and single-point laser radar

Abstract

The utility model discloses a laser module and a single-point laser radar, a penetrating optical cavity is arranged on an optical lens base, a lens and a laser are coaxially assembled in the optical cavity, the optical lens base, the laser and the lens are assembled into an optical mechanism, then a circuit board is connected with the optical lens base, the laser and the circuit board are welded, and the single-point laser radar is obtained. The laser is firstly integrated into the optical mechanism and then is welded with the circuit board, so that the influence of the connection of the circuit board and the optical lens seat on the position of the laser can be avoided, and the tolerance between the superposed circuit board and the optical lens seat between the laser and the optical lens seat in the prior art can be improved; therefore, the coaxiality between the laser and the lens is prevented from being influenced, and the accuracy of the radar is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of radar equipment, and in particular to a laser module and a single-point laser radar. Background Art

[0002] Single Point LiDAR is an application device of laser ranging technology, which is mainly used to obtain the target distance information at a single point. Compared with multi-line or 3D single-point LiDAR, single-point LiDAR can only measure the distance of one point at a time and does not have the ability of two-dimensional or multi-dimensional scanning imaging. Its basic working principle is to transmit laser pulses, then receive the laser signal reflected from the target object, and calculate the distance of the target by measuring the time difference between transmission and reception. Single-point LiDAR has certain application value in some scenes that do not require large-area coverage or rapid scanning due to its simple structure and relatively low cost, such as simple obstacle avoidance systems, fixed-point ranging and other occasions. In practical applications, single-point LiDAR is often used for basic distance measurement in the fields of drones, robot navigation, terrain mapping, etc., or used in combination with other sensors to provide accurate distance data input for the system.

[0003] In current single-point LiDARs, the laser is usually SMT mounted or manually soldered to a circuit board, which is then connected to the optical mount of the optical mechanism. This way, the tolerance between the circuit board and the optical mount will overlap between the laser and the optical mount, affecting the coaxiality between the laser and the lens on the optical mount, and thus affecting the radar ranging accuracy. Utility Model Content

[0004] The purpose of this application is to provide a laser module and a single-point laser radar, which can avoid the influence of the connection between the circuit board and the optical lens mount on the position of the laser, and improve the tolerance between the circuit board and the optical lens mount superimposed between the laser and the optical lens mount in the prior art to ensure that the coaxiality between the laser and the lens is not affected, thereby ensuring the accuracy of the radar.

[0005] The embodiments of the present application can be implemented as follows:

[0006] In a first aspect, the present application provides a laser module, comprising:

[0007] An optical mechanism comprises an optical lens seat, a laser and a lens, wherein the optical lens seat has a penetrating optical cavity, and the lens and the laser are coaxially assembled in the optical cavity;

[0008] The circuit board is connected to the optical lens base and welded to the laser.

[0009] In the above-mentioned embodiment, a penetrating optical cavity is provided on the optical lens base, and the lens and the laser are coaxially assembled in the optical cavity, so that the optical lens base, the laser and the lens are assembled into an optical structure, and then the circuit board is connected to the optical lens base, and the laser and the circuit board are welded. In this way, by first integrating the laser into the optical structure and then welding it to the circuit board, the influence of the connection between the circuit board and the optical lens base on the position of the laser can be avoided, thereby improving the tolerance between the laser and the optical lens base and the superimposed circuit board and the optical lens base in the prior art, so as to ensure that the coaxiality between the laser and the lens is not affected, thereby ensuring the accuracy of the radar.

[0010] In an optional embodiment, the optical cavity includes a first mounting cavity, an optical channel, and a second mounting cavity that are coaxial and sequentially connected, the inner diameter of the first mounting cavity is larger than the inner diameter of the optical channel near one end of the first mounting cavity, and the inner diameter of the second mounting cavity is larger than the inner diameter of the optical channel near one end of the second mounting cavity;

[0011] The laser is coaxially mounted in the first mounting cavity;

[0012] The lens is coaxially mounted in the second mounting cavity.

[0013] In the above embodiment, independent first mounting cavity and second mounting cavity are respectively formed in the optical cavity for coaxial assembly of the laser and the lens, which is convenient for installation of the laser and the lens. The optical channel can be used for light emitted by the laser to pass through the lens to realize the laser emission function.

[0014] In an optional embodiment, the inner wall of the first mounting cavity and the outer wall of the laser are assembled by cylindrical surface matching.

[0015] In the above embodiment, the laser and the first mounting cavity are assembled through a cylindrical surface, thereby ensuring the coaxiality of the laser and the first mounting cavity, so that the installation position of the laser is accurate and reliable, thereby ensuring the coaxiality of the laser and the lens.

[0016] In an optional embodiment, the inner wall of the first mounting cavity includes a first cylindrical surface and a convex portion located on the first cylindrical surface, the outer wall of the laser includes a second cylindrical surface and a concave portion located on the second cylindrical surface, the first cylindrical surface and the second cylindrical surface match, and the convex portion and the concave portion match.

[0017] In the above embodiment, the coaxial assembly of the laser in the first mounting cavity is achieved through the cooperation of the first cylindrical surface and the second cylindrical surface. At the same time, the cooperation of the convex part and the concave part can achieve a fool-proof effect, ensuring that the circumferential position of the laser is accurately installed, which is beneficial to the welding of the laser and the circuit board.

[0018] In an optional embodiment, the inner wall of the second installation cavity includes a first arc surface and a second arc surface with the same radius, and a line between the center of the first arc surface and the center of the second arc surface intersects the central axis of the second installation cavity;

[0019] The outer side wall of the lens comprises a third arc surface and a fourth arc surface with the same radius, and a line between the center of the third arc surface and the center of the fourth arc surface intersects at the central axis of the lens;

[0020] The first arc surface cooperates with the third arc surface, and the second arc surface cooperates with the fourth arc surface.

[0021] In the above embodiment, since the line between the center of the first arc surface and the center of the second arc surface intersects at the central axis of the second mounting cavity, and the line between the center of the third arc surface and the center of the fourth arc surface intersects at the central axis of the lens, the first arc surface and the third arc surface cooperate with each other, and the second arc surface and the fourth arc surface cooperate to achieve the centered installation of the lens, ensuring that the lens is coaxially assembled in the second mounting cavity, so that the installation position of the lens is accurate and reliable, thereby ensuring the coaxiality of the laser and the lens.

[0022] In an optional embodiment, the inner wall of the second installation cavity further includes a first plane and a second plane that are opposite to each other;

[0023] The outer side wall of the lens further comprises a third plane and a fourth plane which are opposite to each other;

[0024] The first plane matches the third plane, and the second plane matches the fourth plane.

[0025] In the above embodiment, the installation direction of the lens can be easily determined by the cooperation of the first plane and the third plane and the cooperation of the second plane and the fourth plane, thereby ensuring the accuracy of the transparent installation position, and reducing the outer diameter of the second installation cavity and the lens, thereby improving the compactness of the structure.

[0026] In an optional embodiment, the laser includes a laser body and a mounting portion which are coaxially connected and have successively increasing diameters, the mounting portion is coaxially assembled in the first mounting cavity, and the laser body extends into the optical channel.

[0027] In the above embodiment, the mounting portion of the laser is coaxially assembled in the first mounting cavity, and the laser body and the mounting portion of the laser are coaxially connected, so the coaxiality of the laser body and the lens can be achieved. Since the laser body extends into the optical channel, the laser body can be located in a closed space, avoiding the risk of stray light leakage.

[0028] In an optional embodiment, the inner diameter of the light channel gradually increases from an end of the light channel close to the first installation cavity to an end of the light channel close to the second installation cavity.

[0029] In the above implementation, the inner diameter of the optical channel gradually increases to form a funnel-shaped structure, thereby reducing the volume and weight of the optical lens holder.

[0030] In an optional embodiment, the laser has pins, and the pins pass through the circuit board and are soldered.

[0031] In the above implementation, the pins of the laser can first pass through the circuit board, then connect the circuit board to the optical lens holder, and then weld the pins to the circuit board, thereby further ensuring that the installation of the circuit board will not affect the coaxiality of the laser and the lens.

[0032] In a second aspect, the present application provides a single-point laser radar, which includes the laser module described in any of the above-mentioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of a laser module according to an embodiment of the present application;

[0035] Figure 2 for Figure 1 Exploded view of;

[0036] Figure 3 This is a partial schematic diagram of the laser module of an embodiment of the present application;

[0037] Figure 4 for Figure 3 CC section view;

[0038] Figure 5 A schematic diagram of a laser according to an embodiment of the present application;

[0039] Figure 6 This is one of the partial schematic diagrams of the optical lens holder according to the embodiment of the present application;

[0040] Figure 7 This is the second partial schematic diagram of the optical lens holder according to the embodiment of the present application;

[0041] Figure 8This is the third partial schematic diagram of the optical lens holder according to the embodiment of the present application;

[0042] Fig. 9 This is one of the schematic diagrams of the lens of the embodiment of the present application;

[0043] Fig.10 This is the second schematic diagram of the lens according to the embodiment of the present application.

[0044] Icons: 10-optical mechanism; 12-optical lens holder; 121-optical cavity; 123-first mounting cavity; 1230-first cylindrical surface; 1232-convex portion; 125-optical channel; 126-second mounting cavity; 1261-first arc surface; 1263-first plane; 1265-second arc surface; 1267-second plane; 14-laser; 141-mounting portion; 1410-second cylindrical surface; 1412-concave portion; 143-laser body; 145-pin; 16-lens; 161-third arc surface; 163-third plane; 165-fourth arc surface; 167-fourth plane; 30-circuit board; 32-perforation. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The following is combined with Figures 1 to 10 , some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] Combination Figures 1 to 4 The embodiment of the present application discloses a laser module that can be applied to a single-point laser radar. The laser module includes an optical mechanism 10 and a circuit board 30. The optical mechanism 10 includes an optical lens base 12, a laser 14 and a lens 16. The optical lens base 12 has a through optical cavity 121. The lens 16 and the laser 14 are coaxially assembled in the optical cavity 121; the circuit board 30 is connected to the optical lens base 12 and welded to the laser 14.

[0053] In this way, by setting a through optical cavity 121 on the optical lens holder 12, the lens 16 and the laser 14 are coaxially assembled in the optical cavity 121, so that the optical lens holder 12, the laser 14 and the lens 16 are assembled into an optical mechanism 10, and then the circuit board 30 is connected to the optical lens holder 12, and the laser 14 and the circuit board 30 are welded. In this way, by integrating the laser 14 into the optical mechanism 10 first and then welding it with the circuit board 30, the influence of the connection between the circuit board 30 and the optical lens holder 12 on the position of the laser 14 can be avoided, so that the tolerance between the superimposed circuit board 30 and the optical lens holder 12 between the laser 14 and the optical lens holder 12 in the prior art can be improved to ensure that the coaxiality between the laser 14 and the lens 16 is not affected, thereby ensuring the accuracy of the radar. In addition, the requirements for the installation accuracy and adjustment range of the receiver for receiving the laser reflected from the external object are also lower.

[0054] Specifically, continue to refer to Figure 3 and Figure 4 The optical cavity 121 includes a first mounting cavity 123, an optical channel 125, and a second mounting cavity 126 which are coaxial and connected in sequence. The inner diameter of the first mounting cavity 123 is larger than the inner diameter of the optical channel 125 near the first mounting cavity 123, and the inner diameter of the second mounting cavity 126 is larger than the inner diameter of the optical channel 125 near the second mounting cavity 126. The laser 14 is coaxially mounted in the first mounting cavity 123; and the lens 16 is coaxially mounted in the second mounting cavity 126. In this way, independent first mounting cavities 123 and second mounting cavities 126 are formed in the optical cavity 121 for coaxial assembly of the laser 14 and the lens 16, which facilitates the installation of the laser 14 and the lens 16. The optical channel 125 can be used for the light emitted by the laser 14 to pass through and pass through the lens 16 to realize the laser emission function.

[0055] Among them, combined Figure 5 The laser 14 includes a coaxially connected laser body 143 and a mounting portion 141 with successively increasing diameters. The mounting portion 141 is coaxially mounted in the first mounting cavity 123, and the laser body 143 extends into the optical channel 125. In this way, the mounting portion 141 of the laser 14 is coaxially mounted in the first mounting cavity 123, and the laser body 143 and the mounting portion 141 of the laser 14 are coaxially connected, so that the coaxiality of the laser body 143 and the lens 16 can be achieved. Since the laser body 143 extends into the optical channel 125, the laser body 143 can be located in a closed space, avoiding the risk of stray light leakage.

[0056] Combination Figure 2 , Figure 4 and Figure 5The laser 14 has a pin 145, and the pin 145 extends from a side of the mounting portion 141 away from the laser body 143, and the pin 145 passes through the through hole 32 on the circuit board 30 and is welded. In this way, the pin 145 of the laser 14 can first pass through the through hole 32 of the circuit board 30, and then the circuit board 30 is connected to the optical lens holder 12, and then the pin 145 and the circuit board 30 are welded, so as to further ensure that the installation of the circuit board 30 will not affect the coaxiality of the laser 14 and the lens 16.

[0057] Optional, combined Figure 4 The inner diameter of the optical channel 125 gradually increases from the end of the optical channel 125 close to the first mounting cavity 123 to the end close to the second mounting cavity 126. In this way, the optical channel 125 forms a funnel-shaped structure, which reduces the volume and weight of the optical lens holder 12.

[0058] The circuit board 30 can be fixedly connected to the optical lens holder 12 by means of adhesive connection, self-tapping screw connection or screw connection, and the specific connection method is not limited, as long as the circuit board 30 and the optical lens holder 12 can be connected and fixed.

[0059] In order to achieve precise installation of the laser 14, the inner wall of the first mounting cavity 123 and the outer wall of the laser 14 can be assembled through cylindrical surface matching, thereby ensuring the coaxiality of the laser 14 and the first mounting cavity 123, so that the installation position of the laser 14 is accurate and reliable, thereby ensuring the coaxiality of the laser 14 and the lens 16.

[0060] Specifically, combined Figures 4 to 6 The inner wall of the first mounting cavity 123 includes a first cylindrical surface 1230 and a convex portion 1232 located on the first cylindrical surface 1230, and the outer wall of the mounting portion 141 of the laser 14 includes a second cylindrical surface 1410 and a concave portion 1412 located on the second cylindrical surface 1410. The first cylindrical surface 1230 and the second cylindrical surface 1410 cooperate to achieve coaxial assembly of the laser 14 in the first mounting cavity 123. The cooperation of the convex portion 1232 and the concave portion 1412 can achieve a foolproof effect and ensure that the circumferential position of the laser 14 is accurately installed, so that the pin 145 of the laser 14 can accurately pass through the opening on the circuit board 30, and then the pin 145 of the laser 14 and the circuit board 30 are welded to ensure accurate and reliable welding.

[0061] Optionally, the number of the protrusions 1232 and the recesses 1412 can be three as shown in the figure, but in other embodiments not shown in the figure, the number of the protrusions 1232 and the recesses 1412 can also be one, two or more than four, and this embodiment does not make any specific limitation on this.

[0062] The mounting portion 141 of the laser 14 and the first mounting cavity 123 may be a clearance fit with a small gap or an interference fit, so as to ensure the mounting accuracy of the laser 14 coaxially assembled in the first mounting cavity 123 .

[0063] In order to achieve precise installation of the lens 16, the inner wall of the second mounting cavity 126 and the outer wall of the lens 16 can be assembled through arc surface cooperation, thereby ensuring the coaxiality of the lens 16 and the second mounting cavity 126, so that the installation position of the lens 16 is accurate and reliable, thereby ensuring the coaxiality of the laser 14 and the lens 16.

[0064] Specifically, combined Figures 7 to 10 The inner wall of the second mounting cavity 126 includes a first arc surface 1261 and a second arc surface 1265 with the same radius, and the line between the center of the first arc surface 1261 and the center of the second arc surface 1265 intersects at the central axis of the second mounting cavity 126, that is, the first arc surface 1261 and the second arc surface 1265 are respectively parts of the same cylindrical surface coaxial with the second mounting cavity 126.

[0065] The outer wall of the lens 16 includes a third arc surface 161 and a fourth arc surface 165 with the same radius. The line between the center of the third arc surface 161 and the center of the fourth arc surface 165 intersects at the central axis of the lens 16, that is, the third arc surface 161 and the fourth arc surface 165 are respectively parts of the same cylindrical surface coaxial with the lens 16.

[0066] When assembling the lens 16, the first arc surface 1261 and the third arc surface 161 are matched, and the second arc surface 1265 and the fourth arc surface 165 are matched, so that the lens 16 can be installed in a centered manner, ensuring that the lens 16 is coaxially assembled in the second mounting cavity 126, so that the installation position of the lens 16 is accurate and reliable, thereby ensuring the coaxiality of the laser 14 and the lens 16.

[0067] In more detail, the first arc surface 1261 and the second arc surface 1265 are respectively the inner side surface of the first limiting portion and the inner side surface of the second limiting portion protruding on the inner wall of the second mounting cavity 126. In other words, there are radially protruding first and second limiting portions on the inner wall of the second mounting cavity 126, and the surfaces opposite to each other of the first limiting portion and the second limiting portion are respectively the first arc surface 1261 and the second arc surface 1265.

[0068] In addition, the inner wall of the second installation cavity 126 further includes a first plane 1263 and a second plane 1267 that are opposite to each other; the outer wall of the lens 16 further includes a third plane 163 and a fourth plane 167 that are opposite to each other; the first plane 1263 and the third plane 163 cooperate, and the second plane 1267 and the fourth plane 167 cooperate. In this way, the installation direction of the lens 16 can be easily determined, the accuracy of the transparent installation position can be ensured, and the outer diameter of the second installation cavity 126 and the lens 16 can be reduced, thereby improving the compactness of the structure.

[0069] Optionally, the number of the first arc surfaces 1261 and the second arc surfaces 1265 can be two as shown in the figure, and the two first arc surfaces 1261 are both located between one side of the first plane 1263 and one side of the second plane 1267, and the two second arc surfaces 1265 are both located between the other side of the first plane 1263 and the other side of the second plane 1267, so that the two first arc surfaces 1261 simultaneously cooperate with the third arc surface 161, and the two second arc surfaces 1265 simultaneously cooperate with the fourth arc surface 165.

[0070] The lens 16 and the second mounting cavity 126 may be clearance fit with a small gap or interference fit, so as to ensure the installation accuracy of the laser 14 coaxially assembled in the first mounting cavity 123 .

[0071] Of course, in some embodiments, the outer side wall of the mounting portion 141 of the laser 14 may also include a plurality of concentric arc surfaces distributed at intervals, and the inner wall of the corresponding first mounting cavity 123 may also be a corresponding arc surface, so that it is also feasible to achieve coaxial assembly of the laser 14 and the first mounting cavity 123 through the arc surface cooperation. In addition, the lens 16 and the second mounting cavity 126 may be circular in structure, that is, it is also feasible to achieve coaxial assembly by using cylindrical surfaces to cooperate between the outer side wall of the lens 16 and the inner wall of the second mounting cavity 126.

[0072] In addition, an embodiment of the present application also discloses a single-point laser radar, which includes the laser module of the above embodiment and therefore also has the corresponding structure and beneficial effects, which will not be repeated here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A laser module, characterized in that: include: An optical mechanism (10) comprises an optical lens base (12), a laser (14) and a lens (16); the optical lens base (12) has a penetrating optical cavity (121); the lens (16) and the laser (14) are coaxially mounted in the optical cavity (121); A circuit board (30) is connected to the optical lens base (12) and is welded to the laser (14).

2. The laser module according to claim 1, characterized in that: The optical cavity (121) comprises a first mounting cavity (123), an optical channel (125), and a second mounting cavity (126) which are coaxial and sequentially connected, the inner diameter of the first mounting cavity (123) being larger than the inner diameter of the optical channel (125) at one end close to the first mounting cavity (123), and the inner diameter of the second mounting cavity (126) being larger than the inner diameter of the optical channel (125) at one end close to the second mounting cavity (126); The laser (14) is coaxially mounted in the first mounting cavity (123); The lens (16) is coaxially mounted in the second mounting cavity (126).

3. The laser module according to claim 2, characterized in that: The inner wall of the first installation cavity (123) and the outer wall of the laser (14) are assembled by matching cylindrical surfaces.

4. The laser module according to claim 3, characterized in that: The inner wall of the first mounting cavity (123) includes a first cylindrical surface (1230) and a convex portion (1232) located on the first cylindrical surface (1230); the outer wall of the laser (14) includes a second cylindrical surface (1410) and a concave portion (1412) located on the second cylindrical surface (1410); the first cylindrical surface (1230) and the second cylindrical surface (1410) cooperate, and the convex portion (1232) and the concave portion (1412) cooperate.

5. The laser module according to claim 2, characterized in that: The inner wall of the second installation cavity (126) comprises a first arc surface (1261) and a second arc surface (1265) having the same radius, and a line between the center of the first arc surface (1261) and the center of the second arc surface (1265) intersects at the central axis of the second installation cavity (126); The outer side wall of the lens (16) comprises a third arc surface (161) and a fourth arc surface (165) having the same radius, and a line connecting the center of the third arc surface (161) and the center of the fourth arc surface (165) intersects at the central axis of the lens (16); The first arc surface (1261) cooperates with the third arc surface (161), and the second arc surface (1265) cooperates with the fourth arc surface (165).

6. The laser module according to claim 5, characterized in that: The inner wall of the second installation cavity (126) further includes a first plane (1263) and a second plane (1267) that are opposite to each other; The outer side wall of the lens (16) further comprises a third plane (163) and a fourth plane (167) which are opposite to each other; The first plane (1263) cooperates with the third plane (163), and the second plane (1267) cooperates with the fourth plane (167).

7. The laser module according to claim 2, characterized in that: The laser (14) comprises a coaxially connected laser body (143) and a mounting portion (141) with successively increasing diameters; the mounting portion (141) is coaxially mounted in the first mounting cavity (123); and the laser body (143) extends into the optical channel (125).

8. The laser module according to claim 2, characterized in that: From an end of the light channel (125) close to the first installation cavity (123) to an end close to the second installation cavity (126), the inner diameter of the light channel (125) gradually increases.

9. The laser module according to claim 1, characterized in that: The laser (14) has a pin (145), and the pin (145) passes through the circuit board (30) and is soldered.

10. A single-point laser radar, characterized in that: A laser module comprising any one of claims 1 to 9.

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