Laser radar, electronic device, and vehicle

Abstract

Embodiments of the present application relate to the technical field of sensors, and disclosed are a laser radar, an electronic device, and a vehicle, for solving the problem of low ranging and resolution accuracy of existing laser radars. The laser radar comprises a housing, a protective cover, and a lens assembly. An accommodating cavity is formed in the housing, and a mounting opening is formed on the housing. The protective cover is connected at the mounting opening in a waterproof manner. The protective cover is provided with a lens accommodating hole, the lens accommodating hole is provided with a first opening and a second opening, the first opening is opposite to the mounting opening and is communicated with the accommodating cavity, and the second opening is communicated with the outside. The lens assembly is connected in the lens accommodating hole in a waterproof manner.

Description

Laser radar, electronic equipment and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 22, 2023, with application number 202311579772.0 and application name “A Laser Radar, Electronic Device and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of sensor technology, and in particular to a laser radar, an electronic device and a vehicle. Background Art

[0003] LiDAR, short for Laser Detection and Ranging System, is a radar system that uses laser beams to detect target characteristics such as position and velocity. LiDAR operates by transmitting a detection signal (a laser beam) toward a target. The received signal (the target echo) reflected from the target is then compared with the transmitted signal. After appropriate processing, relevant target information such as range, position, altitude, speed, attitude, and even shape can be obtained. This allows the detection, tracking, and identification of targets such as aircraft and missiles.

[0004] The waterproof structure of existing lidar will affect the laser emission of the transmitter or the reception of the returned laser by the receiver, resulting in low ranging and resolution accuracy of the lidar.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a laser radar, an electronic device, and a vehicle, which solve the problems of low ranging and resolution accuracy of existing laser radars.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] In a first aspect, an embodiment of the present application provides a laser radar, comprising a housing and a protective cover. A housing is provided in the housing, and a mounting opening is provided on the housing. The protective cover can be installed at the mounting opening and be waterproofly connected to the housing. The laser radar may also include a transmitter, a receiver, and a circuit board, and both the transmitter and the receiver are arranged on the circuit board. Both the transmitter and the receiver include a lens group. The lens group of the transmitter is a transmitting lens group, and the lens group of the receiver is a receiving lens group. A signal processing circuit is provided on the circuit board, and the transmitter and the receiver are arranged on the circuit board and are electrically connected to the signal processing circuit. The circuit board assembly of the above-mentioned circuit board, transmitter, and receiver can be arranged in the housing cavity of the housing.

[0009] The protective cover is provided with a lens receiving hole having a first opening and a second opening. The first opening of the lens receiving hole can be opposite the mounting opening of the housing and communicate with the housing cavity of the housing, while the second opening of the lens receiving hole communicates with the exterior. There may be two lens receiving holes, one for the first lens receiving hole and the other for the second lens receiving hole. The transmitting lens assembly of the transmitter can be mounted in the first lens receiving hole of the protective cover and waterproofly connected to the waterproof cover. The receiving lens assembly of the receiver can also be mounted in the second lens receiving hole of the protective cover and waterproofly connected to the waterproof cover.

[0010] Therefore, the protective cover waterproofs both the transmitting and receiving lens assemblies and is connected to the housing in a waterproof manner, ensuring the waterproof performance of the transmitting and receiving lens assemblies, as well as the circuit board assembly within the housing. The laser beam emitted by the transmitter can be emitted through the second opening of the first lens housing, and the receiver can receive the returning laser beam through the second opening of the second lens housing. Neither the laser beam emitted by the transmitter nor the laser beam received by the receiver is affected by the protective cover, resulting in high ranging and resolution accuracy for the lidar.

[0011] Furthermore, in some embodiments of the present application, the protective cover is made of plastic. In other embodiments of the present application, the protective cover is made of relatively low-cost metal. Both plastic and metal are relatively low in price, reducing the cost of the LiDAR.

[0012] In addition, considering the field of view requirements of the laser radar, in some embodiments of the present application, the wall surface where the lens receiving hole on the protective cover is located is protruded outside the outer shell. When the laser radar of the embodiment of the present application is installed on a vehicle, the outer shell of the laser radar can be accommodated in the body of the vehicle, and the wall surface where the lens receiving hole on the protective cover is located can protrude from the outer shell of the vehicle. Compared with the laser radar in which the entire protective cover protrudes from the outer shell, the laser radar in the embodiment of the present application has a partial area of ​​the protective cover protruding from the body, and the area of ​​the laser radar protruding from the body is reduced, thereby improving the integration of the laser radar and the body.

[0013] For laser radar, waterproof performance is one of the key factors affecting the performance stability and life of the laser radar. There can be multiple ways to waterproof the lens group and the protective cover. As an example, in some embodiments of the present application, the lens group includes a plurality of lenses and a shell, and the plurality of lenses are installed in the shell. The outer wall of the shell is provided with a first flange along the circumference, and a first mounting groove is formed on the first flange. The first mounting groove is located on the surface of the first flange opposite to the protective cover. The protective cover is provided with a first connecting protrusion that cooperates with the first mounting groove, and the first connecting protrusion is waterproofly connected to the first mounting groove, such as by waterproof adhesive bonding, which has a good waterproof effect.

[0014] Furthermore, the protective cover and the housing can be waterproofed in a variety of ways. For example, in some embodiments of the present application, the housing is provided with a second mounting groove. A second connecting protrusion is provided on the protective cover at a position corresponding to the second mounting groove. The second connecting protrusion is waterproofly connected to the second mounting groove, such as by adhesive bonding, to achieve a good waterproof effect.

[0015] Furthermore, in some embodiments of the present application, a portion of the lens assembly is disposed within the mounting opening, and the lens assembly is also waterproofly connected to the housing, providing a further waterproof path to enhance the waterproofing of the lens assembly and components within the housing cavity.

[0016] There are various ways to waterproof the lens assembly and the housing. In some embodiments of the present application, the outer wall of the lens assembly housing is provided with a second flange, which extends along the circumference of the housing. A support boss is provided on the housing opposite the second flange, and the support boss is waterproofly connected to the second flange, such as by adhesive bonding, to achieve a good waterproof effect.

[0017] It should be noted that to facilitate assembly of the circuit board, in some embodiments of the present application, the housing includes a first housing and a second housing, with the first housing and the second housing being waterproofly connected. The mounting opening can be provided in the second housing. After the circuit board is assembled and installed in the first housing, the transmitting lens assembly of the transmitter and the receiving lens assembly of the receiver are aligned with the mounting opening of the second housing. The first housing and the second housing are then connected, making assembly more convenient.

[0018] Based on this, there are various ways to waterproofly connect the first and second housings. For example, the first housing is provided with a third connecting protrusion, and the second housing is provided with a third mounting groove at a position corresponding to the third connecting protrusion. The third mounting groove can be waterproofly connected to the third connecting protrusion, such as by adhesive bonding, to achieve a better waterproof effect on the housings.

[0019] In a second aspect, an embodiment of the present application further provides an electronic device, including a controller and the laser radar described in the above embodiment. The controller is electrically connected to the laser radar. The electronic device can be a robot, a monitoring device, a smart home device (such as an air conditioner, an air purifier), etc. Since the laser radar in the electronic device of the embodiment of the present application has the same structure as the laser radar described in the above embodiment, both can solve the same technical problems and achieve the same technical effects, and will not be described in detail here.

[0020] Thirdly, embodiments of the present application further provide a vehicle comprising a vehicle body and the laser radar described in the above embodiments, the laser radar being mounted on the vehicle body. Since the laser radar in the vehicle of the present embodiment has the same structure as the laser radar described in the above embodiments, and both solve the same technical problems and achieve the same technical effects, they will not be further described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0022] FIG1 is a schematic diagram of the detection ranges of various sensors in an intelligent vehicle according to an embodiment of the present application;

[0023] FIG2 is a perspective schematic diagram of a laser radar according to an embodiment of the present application;

[0024] FIG3 is a schematic structural diagram of a circuit board assembly in a laser radar according to an embodiment of the present application;

[0025] FIG4 is a schematic diagram of an explosion of a laser radar according to an embodiment of the present application;

[0026] FIG5 is a schematic diagram of the structure of a protective cover in a laser radar according to an embodiment of the present application;

[0027] FIG6 is a schematic diagram of the structure of a transmitting lens group in a laser radar according to an embodiment of the present application;

[0028] FIG7 is a cross-sectional schematic diagram of a first laser radar according to an embodiment of the present application;

[0029] FIG8 is a cross-sectional schematic diagram of a second laser radar according to an embodiment of the present application;

[0030] FIG9 is a cross-sectional schematic diagram of a third laser radar according to an embodiment of the present application;

[0031] FIG10 is a schematic cross-sectional view of a fourth laser radar according to an embodiment of the present application;

[0032] FIG11 is a schematic structural diagram of the second housing in the laser radar according to an embodiment of the present application;

[0033] Figure 12 is a schematic structural diagram of the first shell in the laser radar embodiment of the present application.

[0034] Figure 1: 1000-intelligent vehicle; 100-camera device; 200-laser radar; 1-housing; 101-accommodating cavity; 102-mounting port; 1021-first connecting hole; 1022-second connecting hole; 103-second mounting groove; 104-supporting boss; 1041-second groove; 11-first housing; 111-third mounting groove; 12-second housing; 121-third connecting protrusion; 13-screw; 2-emitter; 21-transmitter lens group; 211-lens; 212-housing; 2121-first flange; 2121a-first mounting groove; 2121b-first groove; 2122-second Flange; 2122a-protrusion; 3-receiver; 31-receiving end lens group; 4-circuit board; 5-protective cover; 501-lens accommodating hole; 5011-first opening; 5012-second opening; 501a-first lens accommodating hole; 501b-second lens accommodating hole; 51-first connecting protrusion; 52-second connecting protrusion; 05-lens sleeve; 06-waterproof glass; 300-millimeter wave radar; 400-ultrasonic sensor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0036] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0037] In addition, in this application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0038] In this application, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can refer to a mechanical or physical connection. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. It can also be understood as the physical contact and electrical conduction between components, or the connection between different components in a circuit structure through physical lines such as copper foil on a process control block (PCB) or wires that can transmit electrical signals.

[0039] The present application provides a vehicle, which can be a car, an electric vehicle, a hybrid vehicle, etc., or a smart vehicle. The embodiments of the present application do not impose any particular restrictions on the specific form of the above-mentioned vehicles. For the convenience of explanation, the following examples are all based on the example of the smart vehicle 1000 shown in Figure 1.

[0040] Please refer to Figure 1, which is a three-dimensional diagram of an intelligent vehicle 1000 provided in some embodiments of the present application. As can be seen from the above, in this embodiment, the vehicle is an intelligent vehicle 1000, and a controller and a variety of sensors can be installed on the intelligent vehicle 1000. The controller can be connected to a variety of sensors. The intelligent vehicle 1000 obtains environmental information around the vehicle through a variety of sensors, and analyzes and processes the obtained information to achieve functions such as obstacle perception, target recognition, vehicle positioning, path planning, driver monitoring and reminders. Therefore, the safety, automation level and comfort of vehicle driving are improved. Thus, the intelligent vehicle 1000 can bring people a safe and comfortable driving experience.

[0041] For example, the various sensors installed on the smart vehicle 1000 may include a camera 100, a laser radar 200, a millimeter-wave radar 300, an ultrasonic sensor 400, and the like. Figure 1 illustrates the detection ranges of various sensors. The millimeter-wave radar 300 may include a medium-range millimeter-wave radar, a short-range millimeter-wave radar, and a long-range millimeter-wave radar.

[0042] The laser radar 200 (LR) is an abbreviation for a laser detection and ranging system. The laser radar 200 can be installed outside the door of the smart vehicle 1000 or on the front of the roof, etc., and this application does not impose any restrictions on this. Referring to Figures 2 and 3, the laser radar 200 includes a housing 1, a transmitter 2, a receiver 3, and a circuit board 4. The housing 1 is provided with a housing 101 as shown in Figure 4. The transmitter 2 and the receiver 3 are both arranged (e.g., soldered) on the circuit board 4 to obtain a circuit board assembly. The circuit board assembly is arranged in the housing 101. The transmitter 2 is the laser emitting device in the laser radar 200. The transmitter 2 is used to emit laser light toward a target object. The receiver 3 is the laser receiving device in the laser radar 200, and the receiver 3 is used to receive laser light reflected by the target object. The transmitter 2 and the receiver 3 both include a lens assembly. The lens assembly of the transmitter 2 can be referred to as a transmitter lens assembly (TR), and the lens assembly of the receiver 3 can be referred to as a receiver lens assembly (RL). Circuit board 4 includes a signal processing circuit, which is electrically connected to both transmitter 2 and receiver 3. This circuit is used to control the transmission of transmitter 2, process signals received by receiver 3, and calculate information such as the position, speed, distance, and size of the target object. Furthermore, circuit board 4 can be electrically connected to the aforementioned controller. The controller can receive detection information from lidar 200 from circuit board 4.

[0043] The laser radar 200 requires a waterproof structure to ensure waterproofing of the circuit board assembly within the housing 1, including the transmitter 2, receiver 3, and circuit board 4. Therefore, referring to Figure 4 , the laser radar 200 of this embodiment of the present application also includes a protective cover 5. The housing 1 is provided with a mounting opening 102, into which the protective cover 5 can be mounted, providing a waterproof connection to the housing 1. Furthermore, the protective cover 5 is provided with lens receiving holes 501 for mounting the transmitting lens assembly 21 or the receiving lens assembly 31. As shown in Figures 4 and 5 , the protective cover 5 includes two lens receiving holes 501: a first lens receiving hole 501a and a second lens receiving hole 501b. The first lens receiving hole 501a is used to mount the transmitting lens assembly 21, while the second lens receiving hole 501b is used to mount the receiving lens assembly 31. Furthermore, there are two mounting openings, each having a first opening 5011 and a second opening 5012. Taking the first lens receiving hole 501a as an example, the first opening 5011 of the first lens receiving hole 501a is opposite the mounting opening 102 and communicates with the receiving cavity 101 of the housing 1. The second opening 5012 of the first lens receiving hole 501a is communicated with the outside. The outside here refers to the external environment of the laser radar 200. That is, the second opening 5012 of the first lens receiving hole 501a is unobstructed from the outside. The first opening 5011 of the second lens receiving hole 501b is also opposite the mounting opening 102 and communicates with the receiving cavity 101 of the housing 1. The second opening 5012 of the second lens receiving hole 501b is communicated with the outside. The outside here also refers to the external environment of the laser radar 200. That is, the second opening 5012 of the second lens receiving hole 501b is unobstructed facing outward.

[0044] In addition, the housing 1 shown in FIG4 is further provided with a first communication hole 1021 and a second communication hole 1022 that communicate with the accommodating chamber 101. Both the first communication hole 1021 and the second communication hole 1022 communicate with the mounting opening 102. Furthermore, the first lens accommodating hole 501a of the protective cover 5 can be aligned with the first communication hole 1021 and communicate with the accommodating chamber 101 through the first communication hole 1021. The second lens hole 501b of the protective cover can be aligned with the second communication hole 1022 and communicate with the accommodating chamber 101 through the second communication hole 1022.

[0045] After the circuit board assembly is installed within the housing 1's housing cavity 101, the protective cover 5 is mounted on the housing 1's mounting opening 102. The first connecting hole 1021 and the first lens receiving hole 501a of the protective cover 5 align with the transmitting lens assembly 21, while the second connecting hole 1022 and the second lens receiving hole 501b of the protective cover 5 align with the receiving lens assembly 31. Consequently, the transmitting lens assembly 21 is waterproofly connected within the first lens receiving hole 501a, and the receiving lens assembly 31 is waterproofly connected within the second lens receiving hole 501b of the protective cover 5. Therefore, the laser light generated by the transmitter 2 can be directly emitted through the transmitting lens assembly 21 and the second opening 5012 of the transmitting lens assembly 21 to the external environment for monitoring. Laser light reflected from the external environment is directly incident on the receiver 3 through the second opening 5012 of the receiving lens assembly 31 and the receiving lens assembly 31.

[0046] In the embodiment of the present application, the transmitting lens assembly 21 is housed within the first lens housing hole 501a, and the receiving lens assembly 31 is housed within the second lens housing hole 501b. In other words, the protective cover 5 can directly serve as a waterproof structure, enclosing the transmitting lens assembly 21 and the receiving lens assembly 31. The protective cover 5 provides excellent waterproofing for the transmitting lens assembly 21 and the receiving lens assembly 31, eliminating the need for additional waterproof glass. The laser beam emitted by the transmitter 2 can be directly emitted to the outside, and the laser beam returning from the outside can be directly incident on the receiver 3, both unaffected by the protective cover 5. This results in high ranging and resolution accuracy for the laser radar 200.

[0047] It will be appreciated that, to ensure a wider field of view for both transmitter 2 and receiver 3, the outer end of the transmitting lens assembly 21 in transmitter 2 can be flush with the second opening 5012 of the first lens receiving hole 501a, and the outer end of the receiving lens assembly 31 can be flush with the second opening 5012 of the second lens receiving hole 501b. This ensures both the transmitting and receiving lens assemblies 21 and 31 are waterproof and have a wider field of view.

[0048] Furthermore, in some embodiments of the present application, the wall surfaces of the protective cover 5 where the first lens receiving hole 501a and the second lens receiving hole 501b are located can both be located outside the housing 1. That is, the wall surfaces of the protective cover 5 where the first lens receiving hole 501a and the second lens receiving hole 501b are located are positioned protruding from the exterior of the housing 1, while the wall surfaces of other areas of the protective cover 5 can be embedded within the walls of the housing 1. When the laser radar 200 of the present embodiment is installed in the intelligent vehicle 1000, the housing 1 of the laser radar 200 can be housed within the vehicle body of the intelligent vehicle 1000. The wall surfaces of the protective cover 5 where the first lens receiving hole 501a and the second lens receiving hole 501b are located can protrude from the vehicle body. Compared to the laser radar 200 in which the entire protective cover 5 protrudes from the housing 1, the laser radar 200 in the present embodiment only protrudes from the vehicle body. This reduces the area of ​​the laser radar 200 protruding from the vehicle body, thereby improving the integration of the laser radar 200 with the vehicle body.

[0049] The above describes the installation location of the protective cover 5. Furthermore, the specific waterproof structure of the connection between the protective cover 5 and other components (such as the transmitting lens assembly 21, the receiving lens assembly 31, the housing 1, etc.) is also very important. Waterproof performance will affect the performance stability and lifespan of the laser radar 200.

[0050] The waterproof connection between the transmitting lens assembly 21, the receiving lens assembly 31, and the protective cover 5 can be achieved in a variety of ways. Taking the transmitting lens assembly 21 as an example, in some embodiments of the present application, as shown in FIG6 , the transmitting lens assembly 21 includes a plurality of lenses 211 and a housing 212, wherein the plurality of lenses 211 are mounted within the housing 212. The outer wall of the housing 212 is circumferentially provided with a first flange 2121, and a first mounting groove 2121a is formed in the first flange 2121. The first mounting groove 2121a is located on the surface of the first flange 2121 opposite the protective cover 5. The protective cover 5 is provided with a first connecting protrusion 51 that is capable of mating with the first mounting groove 2121a. The first connecting protrusion 51 can be mounted within the first mounting groove 2121a, and the two are waterproofly connected. For example, by filling the first mounting groove 2121a with waterproof glue and then installing the first connecting protrusion 51 in the first mounting groove 2121a, a waterproof connection between the two is achieved. This simple waterproof structure and good waterproof effect can isolate the circuit board assembly in the housing 1 from external moisture, impurities, etc., thereby improving the performance stability and service life of the laser radar 200. It is understood that the positions of the first connecting protrusion 51 and the first mounting groove 2121a can also be interchanged, and this application does not limit this.

[0051] The first mounting groove 2121a shown in Figure 7 has a U-shaped cross-section. Furthermore, the first mounting groove 2121a is an annular groove that extends circumferentially around the first flange 2121. The first connecting protrusion 51 also has a U-shaped cross-section and is an annular protrusion. The contact area between the first mounting groove 2121a and the first connecting protrusion 51 is large, resulting in a larger waterproof contact area and a better waterproof effect. The arrows in Figure 7 indicate the direction of laser transmission.

[0052] In other embodiments of the present application, as shown in FIG8 , a first groove 2121b is formed at the edge of the first flange 2121. The first groove 2121b may also be an annular groove. Furthermore, the shape of the first connecting protrusion 51 matches the shape of the first groove 2121b. The first connecting protrusion 51 can overlap the first groove 2121b to provide a waterproof connection. For example, the first connecting protrusion 51 can be waterproofly connected to the first groove 2121b of the first flange 2121 using waterproof glue.

[0053] The receiving lens group 31 may also be a structure of a housing 212 and a plurality of lenses 211. Furthermore, the connection method between the receiving lens group 31 and the protective cover 5 may be the same as that between the transmitting lens group 21 and the protective cover 5, and will not be described here one by one.

[0054] Furthermore, the protective cover 5 and the housing 1 can be waterproofly connected in a variety of ways. For example, referring to Figure 7 , the housing 1 is provided with a second mounting groove 103, and the protective cover 5 is provided with a second connecting protrusion 52 at a position corresponding to the second mounting groove 103. The second connecting protrusion 52 is waterproofly connected to the second mounting groove 103, for example, by using waterproof glue, which provides a better waterproof effect.

[0055] The second mounting groove 103 shown in Figure 7 has a U-shaped cross-section. Furthermore, the second mounting groove 103 is an annular groove that extends along the circumference of the housing 1. The second connecting protrusion 52 also has a U-shaped cross-section and is an annular protrusion. This creates a large contact area between the second mounting groove 103 and the second connecting protrusion 52, resulting in a larger waterproof contact area and a better waterproof effect.

[0056] It is understandable that the positions of the second mounting groove 103 and the second connecting protrusion 52 can also be exchanged, that is, as shown in Figure 9, the second mounting groove 103 is located on the protective cover 5, and the second connecting protrusion 52 is set on the shell 1. This application does not impose any restrictions on this.

[0057] Furthermore, in some embodiments of the present application, a portion of the transmitting lens assembly 21 is disposed within the mounting opening 102. Furthermore, the transmitting lens assembly 21 can be waterproofly connected to the housing 1. The addition of a waterproof path between the transmitting lens assembly 21 and the housing 1 in the laser radar 200 can enhance the waterproofing of the circuit board assembly. It is understood that a portion of the transmitting lens assembly 21 can also be disposed within the mounting opening 102, and the receiving lens assembly 31 can be waterproofly connected to the housing 1, similarly enhancing the waterproofing of the circuit board assembly.

[0058] The waterproof connection between the transmitting lens assembly 21 and the housing 1 can be achieved in a variety of ways. For example, as shown in Figures 7, 8, and 9, the outer wall of the housing 212 of the transmitting lens assembly 21 is provided with a second flange 2122, extending circumferentially along the housing 212. A support boss 104 is provided on the housing 1 opposite the second flange 2122. The support boss 104 is waterproofly connected to the second flange 2122, such as by adhesive bonding, which provides a better waterproof effect and a simpler structure.

[0059] Furthermore, in some embodiments, the second flange 2122 may be provided with a protrusion 2122a as shown in Figure 10 . A second groove 1041 is formed on the support boss 104, which may be an annular groove. Furthermore, the second groove 1041 may match the shape of the protrusion 2122a, allowing the protrusion 2122a to be inserted into the second groove 1041 and securely connected using waterproof adhesive. This increases the contact area between the support boss 104 and the second flange 2122, enhancing the waterproof strength of the transmitting lens assembly 21 and the housing 1.

[0060] Similarly, the waterproof connection structure between the receiving end lens group 31 and the housing 1 may also be the same as or similar to the waterproof connection structure between the transmitting end lens group 21 and the housing 1, and will not be described in detail here.

[0061] It should be noted that, to facilitate installation of the circuit board assembly, in some embodiments of the present application, referring to Figures 11 and 12 , the housing 1 includes a first housing 11 and a second housing 12, which enclose the aforementioned accommodating cavity 101. The aforementioned mounting opening 102, first connecting hole 1021, and second connecting hole 1022 can all be defined in the second housing 12. When assembling the circuit board assembly within the first housing 11, align the transmitting lens assembly 21 of the transmitter 2 with the first connecting hole 1021, and align the receiving lens assembly 31 of the receiver 3 with the second connecting hole 1022. The first housing 11 and the second housing 12 are then connected, for example, by the screws 13 shown in Figure 4 .

[0062] Therefore, it is understood that the connection between the first housing 11 and the second housing 12 also requires a waterproof connection to ensure waterproofing of the circuit board assembly. In some embodiments of the present application, as shown in Figures 7, 8, 9, and 10, a third mounting groove 111 is provided on the first housing 11, and a third connecting protrusion 121 is provided on the second housing 12 at a position corresponding to the third mounting groove 111. The third connecting protrusion 121 is waterproofly connected to the third mounting groove 111, such as by waterproof adhesive, which improves the waterproofing effect of the housing 1 and simplifies the waterproof structure.

[0063] Furthermore, the third connecting protrusion 121 shown in Figure 10 has a U-shaped cross-section. Furthermore, the third connecting protrusion 121 is an annular protrusion that extends circumferentially along the second housing 12. The third mounting groove 111 also has a U-shaped cross-section. The third mounting groove 111 is an annular groove that extends circumferentially along the first housing 11. The relative area between the third connecting protrusion 121 and the third mounting groove 111 is large, allowing for a larger contact area with the waterproof adhesive, resulting in a better waterproofing effect.

[0064] It is understandable that the positions of the third mounting groove 111 and the third connecting protrusion 121 can also be interchanged, that is, the third connecting protrusion 121 is provided on the first housing 11 and the third mounting groove 111 is provided on the second housing. This application does not impose any limitation on this.

[0065] Therefore, the waterproof performance of the joints of each component in the laser radar 200 of the embodiment of the present application is good, which ensures the sealing and reliability of the laser radar 200 and extends its service life.

[0066] In addition, the above-mentioned laser radar 200 can be applied not only to vehicles, but also to various electronic devices that require distance and speed measurement, such as robots, monitoring equipment, smart home devices (such as air conditioners and air purifiers). This application does not limit the application scenarios of the laser radar 200.

[0067] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A laser radar, characterized in that: include: A housing, wherein a receiving cavity is provided in the housing and a mounting opening is provided on the housing; A protective cover, the protective cover is waterproofly connected to the mounting port; the protective cover is provided with a lens accommodating hole, the lens accommodating hole has a first opening and a second opening, the first opening is opposite to the mounting port and communicates with the accommodating cavity, and the second opening communicates with the outside; A lens group is waterproofly connected in the lens accommodating hole.

2. The laser radar according to claim 1, characterized in that: The protective cover is made of plastic or metal.

3. The laser radar according to claim 1 or 2, characterized in that: The wall surface where the lens accommodating hole is located protrudes out of the shell.

4. The laser radar according to any one of claims 1 to 3, characterized in that: The lens group comprises a housing and a plurality of lenses installed in the housing; a first flange is provided on the outer wall of the housing along the circumferential direction, and a first installation groove is formed on the surface of the first flange opposite to the protective cover; The protective cover is provided with a first connecting protrusion matched with the first mounting groove, and the first connecting protrusion is waterproofly connected to the first mounting groove.

5. The laser radar according to any one of claims 1 to 4, characterized in that: A second mounting groove is provided on the outer wall of the housing, a second connecting protrusion is provided on the protective cover at a position corresponding to the second mounting groove, and the second connecting protrusion is waterproofly connected to the second mounting groove.

6. The laser radar according to any one of claims 1 to 5, characterized in that: Part of the lens group is arranged in the installation opening and is waterproofly connected to the housing.

7. The laser radar according to claim 6, characterized in that: The lens group includes a shell and a plurality of lenses installed in the shell; a second flange is circumferentially provided on the outer wall of the shell, a supporting boss is provided at a position opposite to the second flange on the outer shell, and the supporting boss is waterproofly connected to the second flange.

8. The laser radar according to any one of claims 1 to 7, characterized in that: The housing comprises a first housing and a second housing, the first housing is provided with a third connection protrusion, a third installation groove is provided at a position corresponding to the third connection protrusion on the second housing, and the third installation groove is waterproofly connected to the third connection protrusion.

9. An electronic device, characterized in that: include: Controller; The laser radar described in any one of claims 1 to 8, wherein the controller is electrically connected to the laser radar.

10. A vehicle, characterized in that: include: Vehicle body; The laser radar described in any one of claims 1 to 8 is installed on the vehicle body.

Images