Positioning apparatus and electronic device

Abstract

The present application provides a positioning apparatus and an electronic device. The positioning apparatus comprises: a transmitter, a receiver, a first collimating lens, a second collimating lens, and a scanning mechanism. The scanning mechanism comprises: a first mirror and / or second mirror group, and a driving component, the driving component being used to drive the mirror group, and the collimating lens rotating about a first axis of rotation. The transmitter and the receiver are disposed at two opposite sides of the mirror group. The mirror group comprises: a first mirror and / or a second mirror, the first mirror and the second mirror being used to fold an optical path. The first collimating lens is used to convert a light beam emitted by the transmitter into collimated light. The second mirror is used to reflect, to the receiver, reflected light of an object to be measured in an environment to be measured. Thus, the positions of the transmitter and the receiver are decoupled, and measurement accuracy is improved. The mirror and the collimating lens can be combined to implement folding and multiplexing of the optical path, to implement miniaturization of a positioning apparatus such as a radar.

Description

Positioning devices and electronic equipment

[0001] This application claims priority to Chinese patent applications filed on November 27, 2024, with application number 202411720403.3, entitled "An Interactive Device and System", and on December 6, 2024, with application number 202411793768.9, entitled "Positioning Device and Electronic Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of optics, and more particularly to a positioning device and electronic device. Background Technology

[0003] Radar, as a positioning device, is a long-range sensing technology that uses radio waves to measure the distance to a target. For example, it uses a transmitter to emit a pulsed light beam, which is reflected or scattered by the target object and received by a receiver. By measuring the time delay from emission to reception of the light beam, as well as the direction of the beam, information about the target can be determined, such as parameters like target distance, azimuth, altitude, speed, attitude, and even shape.

[0004] Existing radar devices use a rotating scanning mechanism to reflect detection light generated at different times, causing the detection light to deflect at different angles in the horizontal direction before being emitted into the target space, thus enabling the radar device to scan in the horizontal direction. Different optical and scanning architectures have different advantages and disadvantages. To meet the miniaturization requirements of radar, new demands are placed on optical imaging and scanning architectures. Therefore, ensuring high-precision measurement accuracy of radar devices while maintaining miniaturization is a key technological development direction. Summary of the Invention

[0005] This application provides a positioning device and electronic device, solving the problem of balancing miniaturization and high precision in positioning devices. Taking a radar device as an example, to achieve the above objectives, this application adopts the following technical solution:

[0006] A first aspect of this application provides a radar device, comprising: a transmitter, a receiver, a first collimating lens, a second collimating lens, and a scanning mechanism; the scanning mechanism includes: a mirror assembly, and a driving component connected to the mirror assembly, the driving component being used to drive the mirror assembly, the first collimating lens, and the second collimating lens to rotate about a first rotation axis; the transmitter and the receiver are disposed on opposite sides of the mirror assembly; the mirror assembly includes: a first reflecting mirror and / or a second reflecting mirror; the first reflecting mirror being used to reflect a light beam emitted by the transmitter to a test environment, the first collimating lens being used to convert the light beam emitted by the transmitter into collimated light; the second reflecting mirror being used to reflect the reflected light from a test object in the test environment to the receiver, and the second collimating lens being used to converge the reflected light from the test object in the test environment to the receiver. Therefore, the transmitter and receiver are respectively located on opposite sides of the mirror assembly, and their positions are decoupled, making the positions of the first collimating lens and the second collimating lens more flexible. In this way, the positions of the first collimating lens and the second collimating lens in the optical path can be adjusted. In conjunction with the first reflector and / or the second reflector, the optical path can be folded and multiplexed, which is beneficial to reducing the size of the radar device and realizing the miniaturization of the radar device.

[0007] In addition, the separation of the laser transmitter and receiver in the radar device separates the light transmission and reception paths, avoiding interference between the emitted laser beam and the light reflected from the object under test, thus improving measurement accuracy.

[0008] In one optional implementation, the first collimating lens and the first reflecting mirror are separate, with the first collimating lens positioned on the light-emitting side of the first reflecting mirror. This allows the first reflecting mirror to fold the transmitter's optical path, facilitating device miniaturization. The focal length of the first collimating lens can be the sum of the optical path between the first reflecting mirror and the transmitter, and the optical path between the first reflecting mirror and the first collimating lens, enabling the first collimating lens to reuse the optical path between the first reflecting mirror and the transmitter, further achieving device miniaturization.

[0009] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component. Optionally, the first collimating lens and the first reflecting mirror are integrally formed; alternatively, the component for disposing of the first collimating lens and the first reflecting mirror can also be an integrally formed part. The first collimating lens includes: a first curved surface disposed on the light-emitting side of the first reflecting mirror, the curvature direction of the first curved surface being opposite to that of the first reflecting mirror. Thus, the first curved surface is equivalent to a part of the first collimating lens. Disposing the first collimating lens and the first reflecting mirror in the same component can reduce the number of optical elements, and the reflection and refraction of the light path can be achieved through a single optical element, which is beneficial for the miniaturization of the radar device. Furthermore, the first curved surface being disposed on the light-emitting side of the first reflecting mirror can realize the multiplexing of the light path between the first reflecting mirror and the transmitter, which can further realize the miniaturization of the device. Optionally, this component can be a prism.

[0010] In one optional implementation, the sum of the optical path length between the first collimating lens and the first reflecting mirror and the optical path length between the first reflecting mirror and the transmitter is equal to the focal length of the first collimating lens. Thus, the transmitter is positioned at the focal point of the first collimating lens, and the first reflecting mirror can fold the optical path between the first collimating lens and the transmitter, which is beneficial for miniaturization of the device. Furthermore, the first collimating lens and the first reflecting mirror can reuse the optical path between the transmitter and the first reflecting mirror, further achieving miniaturization of the device.

[0011] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component. The first collimating lens includes a second curved surface disposed on the light-incident side of the reflecting mirror, with the curvature direction of the second curved surface facing the first reflecting mirror. Thus, the second curved surface is equivalent to a part of the first collimating lens. By incorporating the first collimating lens and the first reflecting mirror into a single component, the number of optical elements can be reduced, allowing for the reflection and refraction of light through a single optical element, which is beneficial for the miniaturization of radar devices. This component can be, for example, a prism; optionally, the first collimating lens and the first reflecting mirror are integrally formed. Alternatively, the component can also be integrally formed.

[0012] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component. Optionally, the first collimating lens and the first reflecting mirror are integrally formed; alternatively, the component for disposing of the first collimating lens and the first reflecting mirror can also be integrally formed. The first collimating lens includes: a first curved surface and a second curved surface. The first curved surface is disposed on the light-emitting side of the first reflecting mirror, and the curvature direction of the first curved surface is away from the first reflecting mirror. The second curved surface is disposed on the light-incoming side of the first reflecting mirror, and the curvature direction of the second curved surface is towards the first reflecting mirror. Thus, both the second curved surface and the first curved surface can be used to collimate the light emitted from the transmitter through the cooperation of the second curved surface and the first curved surface. This component can be, for example, a prism, which can improve the collimation performance of the prism for the optical path. Moreover, compared with only one curved surface, collimation of the optical path can be achieved within a shorter optical path, and the prism volume can be reduced to further achieve miniaturization of the radar device.

[0013] In one alternative implementation, the first collimating lens is disposed on the light-emitting side of the transmitter and is connected to the transmitter. Therefore, encapsulating the first collimating lens on the light-emitting side of the transmitter facilitates the miniaturization of the radar device.

[0014] In one alternative implementation, the first collimating lens includes: an integrated COB lens and a superlens. Therefore, the COB lens and superlens are relatively small in size, achieving good collimation results with a smaller footprint.

[0015] In one optional implementation, the second collimating lens and the second reflecting mirror are independent, with the second collimating lens positioned on the light-incoming side of the second reflecting mirror. This allows the second reflecting mirror to fold the transmitter's optical path, facilitating device miniaturization. The focal length of the second collimating lens can be the sum of the optical path between the second reflecting mirror and the receiver, and the optical path between the second reflecting mirror and the second collimating lens, enabling the second collimating lens to reuse the optical path between the second reflecting mirror and the receiver, further achieving device miniaturization.

[0016] In one optional implementation, the second collimating lens and the second reflecting mirror are disposed in the same component; optionally, the second collimating lens and the second reflecting mirror are integrally formed. The second collimating lens includes a third curved surface disposed on the light-incident side of the second reflecting mirror, the curvature direction of the third curved surface being opposite to that of the second reflecting mirror. Thus, the third curved surface is equivalent to a part of the second collimating lens. Distributing the second collimating lens and the second reflecting mirror in the same component, such as forming a prism, can reduce the number of optical elements, allowing reflection and refraction of the light path to be achieved with a single optical element, which is beneficial for the miniaturization of the radar device. Furthermore, the third curved surface being disposed on the light-incident side of the second reflecting mirror allows for the multiplexing of the optical path between the second reflecting mirror and the receiver, further enabling the miniaturization of the device.

[0017] In one optional implementation, the sum of the optical path length between the second collimating lens and the second reflecting mirror and the optical path length between the second reflecting mirror and the receiver is equal to the focal length of the second collimating lens. Thus, the receiver is positioned at the focal point of the second collimating lens, and the two reflecting mirrors can fold the optical paths of the second collimating lens and the receiver, which is beneficial for miniaturization of the device. Furthermore, the second collimating lens and the second reflecting mirror can reuse the optical path between the receiver and the second reflecting mirror, further contributing to the miniaturization of the device.

[0018] In one optional implementation, the second collimating lens and the second reflecting mirror are disposed in the same component; alternatively, the second collimating lens and the second reflecting mirror are integrally formed. The second collimating lens includes a fourth curved surface disposed between the second reflecting mirror and the receiver, with the curvature direction of the fourth curved surface facing the second reflecting mirror. Thus, the fourth curved surface is equivalent to a part of the second collimating lens. By disposing of the second collimating lens and the second reflecting mirror in the same component, such as forming a prism, the number of optical elements can be reduced. Reflection and refraction of light can be achieved with a single optical element, which is beneficial for the miniaturization of radar devices.

[0019] In one optional implementation, the second collimating lens and the second reflecting mirror are integrally formed into a prism. The second collimating lens includes a third curved surface and a fourth curved surface. The third curved surface is disposed on the light-receiving side of the second reflecting mirror, and its curvature direction is away from the second reflecting mirror. The fourth curved surface is disposed between the second reflecting mirror and the receiver, and its curvature direction is towards the second reflecting mirror. Thus, both the third and fourth curved surfaces can be used to converge the received light. By combining the second and first curved surfaces, the prism's light-converging performance can be improved. Furthermore, compared to using only one curved surface, light convergence can be achieved within a shorter optical path, reducing the prism's volume and further miniaturizing the radar device.

[0020] In one alternative implementation, the second collimating lens is disposed on the light-incoming side of the receiver and is connected to the receiver. This encapsulates the first collimating lens on the light-incoming side of the receiver, which is beneficial for miniaturizing the radar device.

[0021] In one alternative implementation, the second collimating lens includes: an integrated COB lens and a superlens. Therefore, the COB lens and superlens are relatively small in size, achieving a good focusing effect with a small footprint.

[0022] In one optional implementation, the first collimating lens is independent of the first reflecting mirror, and the second collimating lens is independent of the second reflecting mirror. The first collimating lens is disposed on the light-emitting side of the first reflecting mirror, and the second collimating lens is disposed on the light-incoming side of the second reflecting mirror. Thus, the first and second collimating lenses employ the same structure, simplifying the manufacturing process.

[0023] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component, and the second collimating lens and the second reflecting mirror are disposed in the same component. The first collimating lens includes a first curved surface disposed on the light-emitting side of the first reflecting mirror, the curvature direction of the first curved surface being opposite to that of the first reflecting mirror. The second collimating lens includes a third curved surface disposed on the light-incoming side of the second reflecting mirror, the curvature direction of the third curved surface being opposite to that of the second reflecting mirror. Thus, the first collimating lens and the first reflecting mirror form a first prism, and the second collimating lens and the second reflecting mirror form a second prism, occupying less space.

[0024] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component, and the second collimating lens and the second reflecting mirror are disposed in the same component. The first collimating lens includes a first curved surface and a second curved surface. The first curved surface is disposed on the light-emitting side of the first reflecting mirror, and the second curved surface is disposed on the light-incoming side of the first reflecting mirror. The curvature direction of the first curved surface is away from the first reflecting mirror, and the curvature direction of the second curved surface is towards the first reflecting mirror. The second collimating lens includes a third curved surface and a fourth curved surface. The third curved surface is disposed on the light-incoming side of the second reflecting mirror, and the curvature direction of the third curved surface is away from the second reflecting mirror. The fourth curved surface is disposed between the second reflecting mirror and the receiver, and the curvature direction of the fourth curved surface is towards the second reflecting mirror. Thus, the first collimating lens and the first reflecting mirror form a first prism, and the second collimating lens and the second reflecting mirror form a second prism. The first prism and the second prism adopt a hyperboloid structure, which occupies less space.

[0025] In one optional implementation, the first collimating lens and the first reflecting mirror are disposed in the same component. The first collimating lens includes a first curved surface and a second curved surface. The first curved surface is disposed on the light-emitting side of the first reflecting mirror, and its curvature direction is away from the first reflecting mirror. The second curved surface is disposed on the light-incoming side of the first reflecting mirror, and its curvature direction is towards the first reflecting mirror. The second collimating lens is independent of the second reflecting mirror and is disposed on the light-incoming side of the second reflecting mirror. Thus, the first and second collimating lenses employ different structures, allowing for greater manufacturing flexibility.

[0026] In one alternative implementation, the mirror assembly forms an angle α with the rotation axis. This angle between the mirror assembly and the rotation axis facilitates the folding of the light beam, which is beneficial for miniaturization of the device.

[0027] In one alternative implementation, the angle α between the mirror assembly and the rotation axis satisfies: 35° ≤ a ≤ 50°. This angle allows for a larger angle between the incident and emitted beams, resulting in better beam folding and further miniaturization of the device.

[0028] In one alternative implementation, the driving component includes any one of a motor, a dual-axis voice coil motor, or a microelectromechanical motor. Therefore, the mirror assembly can be driven by a variety of motors, allowing selection of the motor with the smallest footprint, which is beneficial for miniaturization of the device.

[0029] In one alternative implementation, the transmitter, the mirror assembly, and the receiver are arranged sequentially along a first direction, which is parallel to the first rotation axis. This saves space within the radar device in the direction perpendicular to the first direction, facilitating miniaturization of the equipment.

[0030] In one optional implementation, the mirror assembly includes a first reflector, and the receiver is connected to the driving component, which further drives the receiver to rotate about the first rotation axis. Therefore, directly connecting the receiver to the driving component reduces the space occupied in the first direction, which is beneficial for device miniaturization.

[0031] In one optional implementation, the mirror assembly includes a second reflector, and the transmitter is connected to the driving component, which further drives the transmitter to rotate about the first rotation axis. Therefore, directly connecting the transmitter to the driving component reduces the space occupied in the first direction, which is beneficial for device miniaturization.

[0032] In one alternative implementation, the radar device further includes a control unit; the control unit is signal-connected to the transmitter, and the control unit is used to drive the transmitter to emit a beam.

[0033] In one optional implementation, the control unit and the receiver are signal-connected; the control unit is used to acquire first information based on the beam emitted by the transmitter and the beam received by the receiver, and the first information is used to determine the position of the object being measured. Therefore, this radar device can be used in smart devices to detect the position of the object being measured.

[0034] A second aspect of this application provides an electronic device comprising: the radar device described above. Therefore, by employing the aforementioned radar device, the electronic device can achieve a miniaturized design.

[0035] In one alternative implementation, the electronic device includes a display screen and a bezel surrounding the display screen, with the radar device disposed on the bezel. Therefore, by disposing the radar device on the bezel, it can better acquire initial information.

[0036] In one alternative implementation, the radar device is positioned in the middle of the frame. Therefore, by positioning the radar device in the middle of the frame, the blind zone is smaller, allowing for better acquisition of initial information.

[0037] In one alternative implementation, the radar device has a scanning angle of 360°. This results in a wider scanning range, a smaller blind zone, and better acquisition of initial information.

[0038] In one optional implementation, the electronic device includes a processing unit for acquiring first information and determining the position of the object under test based on the first information. Thus, the electronic device can determine the position of the object under test based on the first information collected by the radar device, and through the positioning coordination between the radar device and the object under test (such as a stylus, touch glove, electronic pointer, or a user's bare finger), enable the user to perform touch and / or writing operations on devices such as a display screen, thereby improving the user experience.

[0039] In one optional implementation, the processing unit filters position information within a specified range from the first information to determine the position of the object under test. This specified range can be a range input by the user or a valid range obtained from the first information. Within this specified range, the processing unit can obtain the position information of the object under test in front of the display screen to determine its position.

[0040] Understandably, the radar devices described in the above aspects can also be replaced with other types of positioning devices that conform to the above structural design principles. Attached Figure Description

[0041] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0042] Figure 2 is a schematic diagram of a radar device;

[0043] Figure 3 is a schematic diagram of a radar device provided in an embodiment of this application;

[0044] Figure 4 is a schematic diagram of another radar device provided in an embodiment of this application;

[0045] Figure 5 is a schematic diagram of another radar device provided in an embodiment of this application;

[0046] Figure 6 is a schematic diagram of another radar device provided in an embodiment of this application;

[0047] Figure 7 is a schematic diagram of another radar device provided in an embodiment of this application;

[0048] Figure 8 is a schematic diagram of another radar device provided in an embodiment of this application;

[0049] Figure 9 is a schematic diagram of another radar device provided in an embodiment of this application;

[0050] Figure 10 is a schematic diagram of another radar device provided in an embodiment of this application;

[0051] Figure 11 is a schematic diagram of another radar device provided in an embodiment of this application;

[0052] Figure 12 is a structural block diagram of a radar device provided in an embodiment of this application;

[0053] Figure 13 is a structural block diagram of an electronic device provided in an embodiment of this application;

[0054] Figure 14 is a structural block diagram of another electronic device provided in an embodiment of this application. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0056] In the following description, 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 technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0057] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0058] In the following description of the positioning device provided in the embodiments of this application, a radar device is used as an example.

[0059] This application provides a radar device (Light Detection and Ranging, or LiDAR for short). A radar device is a sensor technology that acquires target position and shape information by emitting a light beam and measuring its reflection time and intensity. Radar devices feature high resolution, high precision, and long-range sensing capabilities, and are widely used in various fields, such as autonomous driving, environmental perception and 3D modeling, and end-consumer applications. This radar device can be a LiDAR, and the light beam emitted by the radar device can be a laser beam.

[0060] In some embodiments, within the field of autonomous driving, radar devices enable autonomous vehicles to acquire real-time three-dimensional spatial information about their surroundings, including roads, obstacles, and pedestrians. Radar devices can provide high-precision target detection and distance measurement, helping autonomous vehicles make accurate decisions and perform obstacle avoidance maneuvers. Simultaneously, radar devices can also enable lane keeping, high-precision positioning, and map building, improving the performance and safety of autonomous driving systems.

[0061] In other embodiments, the radar device features high resolution and high precision, making it ideal for environmental perception and 3D modeling. In urban planning and construction, radar devices can quickly acquire precise geographic information about areas such as terrain, buildings, and roads, supporting urban planning and infrastructure development. Furthermore, radar devices can be applied in fields such as geological exploration, mining, and forest management, helping to obtain information on the terrain, vegetation, and resource distribution of target areas.

[0062] In other embodiments, in end-consumer usage scenarios such as robotic vacuum cleaners, caregivers, companion robots, and touchscreen displays, radar devices can leverage their high precision advantages.

[0063] In other embodiments, the radar device can also be used in fields such as intelligent transportation, urban management, and marine exploration.

[0064] For example, the radar device can be used in an electronic device as shown in Figure 1, which can be a smart screen TV.

[0065] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. As shown in Figure 1, the electronic device 1 includes: a radar device 10, a display screen 20, and a bezel 30 surrounding the display screen.

[0066] Referring to Figure 1, the radar device 10 is disposed on the frame 30. The frame 30 includes an upper frame 301, a lower frame 302, a left frame 303, and a right frame 304. In some embodiments, the radar device 10 is disposed on the upper frame 301. In other embodiments, the radar device 10 may be disposed on other frames.

[0067] This application does not limit the position of the radar device 10 on the upper frame 301. In some embodiments, the radar device 10 is disposed at the end of the upper frame 301. The scanning area of ​​the radar device can be fan-shaped, and the scanning angle is, for example, 360°.

[0068] In other embodiments, the radar device 10 is positioned in the middle of the upper frame 301. The scanning area of ​​the radar device can be fan-shaped, and the scanning angle of the radar device can be, for example, 360°.

[0069] The scanning area of ​​the radar device is, for example, circular, and each radar device can detect the position of the object under test within its respective scanning area. When the user operates on the display screen 20, the radar device 10 can emit a beam of light into the area to be tested in front of the display screen and receive the reflected light from the object under test in the environment to obtain the position information of the object under test within the area to be tested, thereby obtaining the user's operation and realizing the user's touch and / or writing operations on the display screen 20, thus improving the user experience.

[0070] In some embodiments, as shown in FIG2, FIG2 is a schematic diagram of a radar device. The radar device 10 includes: a transmitter 101, a receiver 102 and a scanning mechanism 103, a first collimating lens 104 disposed between the transmitter 101 and the scanning mechanism 103, and a second collimating lens 105 disposed between the receiver 102 and the scanning mechanism 103.

[0071] The scanning mechanism 103 includes a reflector 1030 and a driving component 1032, which drives the reflector 1030 to rotate about a first rotation axis O. The first rotation axis O is parallel to the x-axis.

[0072] The transmitter 101 can be used to emit a light beam to the reflector 1030, and the light beam is transmitted to the object under test through the first collimating lens 104. The receiver 102 can be used to receive the reflected light from the object under test.

[0073] In the x-direction, the light beam emitted by the transmitter 101 is optically shaped by the first collimating lens 104, and then reflected by the mirror group on the driving component 1032 to reach the object under test. The reflected light from the object under test passes through the mirror group and reaches the second collimating lens 105. After being optically shaped by the second collimating lens 105, the reflected light reaches the receiver 102. The mirror group can be a plane mirror.

[0074] In some embodiments, the first collimating lens 104 can be embedded in the second collimating lens 105 to save space in the z-direction. The radar device adopts a coaxial structure, in which the transmitter 101 and receiver 102 are systems with the same optical path, and the second collimating lens 105 is penetrated by making a hole in the middle of the second collimating lens 105.

[0075] However, the radar device occupies a large space in the x-direction, which is not conducive to the miniaturization of the device. Furthermore, the first collimating lens 104 is embedded in the second collimating lens 105, and the area in the second collimating lens 105 corresponding to the first collimating lens 104 is hollowed out, which makes it impossible to receive the reflected light from the object being measured, thus affecting the measurement accuracy.

[0076] This application provides a radar device that can be applied in the above-mentioned fields, which is beneficial for achieving miniaturization, high precision and low cost of radar devices.

[0077] Figure 3 is a schematic diagram of a radar device provided in an embodiment of this application. As shown in Figure 3, the radar device includes: a transmitter 101, a receiver 102, and a scanning mechanism 103.

[0078] This application does not limit the types of transmitter 101 and receiver 102. In some embodiments, transmitter 101 includes: edge emitting laser (EEL) and vertical cavity surface emitting laser (VCSEL). Receiver 102 includes: avalanche photodiode (APD) and single photon avalanche diode (SPAD).

[0079] The scanning mechanism 103 includes: a lens assembly (1031, 1033), and a drive component 1032 connected to the lens assembly (1031, 1033). The drive component 1032 is used to drive the lens assembly (1031, 1033) to rotate about a first rotation axis O. The first rotation axis O is parallel to the x-axis in FIG3.

[0080] The transmitter 101 and the receiver 102 are disposed on opposite sides of the mirror assembly (1031, 1033). In some embodiments, the transmitter 101, the mirror assembly (1031, 1033), and the receiver 102 can be arranged sequentially along a first direction. This first direction is parallel to the x-axis in FIG3. Therefore, compared to a staggered arrangement of the transmitter 101, the mirror assembly, and the receiver 102 along the x-direction, space in the y-direction can be saved, which is beneficial for miniaturization of the device.

[0081] The first direction is parallel to the first rotation axis O. Parallelism in this application may have some error, as long as the transmitter 101, the second reflector 1033, and the receiver 102 are arranged approximately along the first direction. Optionally, the angle between the first direction and the first rotation axis is less than or equal to 5°.

[0082] This application does not limit the type of the drive component 1032. In some embodiments, the drive component 1032 includes: a motor, a dual-axis voice coil motor (VCM) motor, and a micro-electro-mechanical system (MEMS) motor.

[0083] The transmitter 101 is used to emit a light beam to the mirror assembly, which is used to transmit the light beam emitted by the transmitter 101 to the environment under test. The mirror assembly is also used to receive the reflected light from the object under test in the environment under test and transmit the reflected light to the receiver 102.

[0084] Thus, the lens assembly can be used to adjust the light path of the beam emitted by the transmitter 101 and the reflected light of the object under test in the environment under test, thereby realizing the detection of the object under test in the environment under test.

[0085] The mirror assembly includes a first reflector 1031 and / or a second reflector 1033. The first reflector 1031 is used to reflect the light beam emitted by the transmitter 101 into the environment under test, and the second reflector 1033 is used to reflect the reflected light from the object under test in the environment under test to the receiver 102.

[0086] This application does not limit the arrangement of the first reflector 1031 in its embodiments. In some embodiments, the first reflector 1031 is independent of the transmitter 101. For example, as shown in FIG3, the first reflector 1031 is connected to the drive mechanism 1032, and the first reflector 1031 is spaced apart from the transmitter 101. For example, the first reflector 1031 may correspond to the transmitter 101.

[0087] In other embodiments, the first reflector 1031 may also be connected to the transmitter 101. Correspondingly, the positional relationship between the second reflector 1033 and the receiver 102 can be referred to the above description. The transmitter 101 and the receiver 102 are disposed on opposite sides of the mirror group (1031, 1033), including: the first reflector 1031 being relatively independent of the transmitter 101, or the first reflector 1031 being connected to the transmitter 101, and the second reflector 1033 being relatively independent of the receiver 102, or the second reflector 1033 being connected to the receiver 102, with the transmitter 101 disposed on one side of the mirror group (first reflector 1031, second reflector 1033) and the receiver 102 disposed on the other side of the mirror group (first reflector 1031, second reflector 1033). All of these can be considered as the transmitter 101 and the receiver 102 being disposed on opposite sides of the mirror group (1031, 1033). The first reflector 1031 is connected to the transmitter 101, which may include an indirect connection or a direct connection between the first reflector 1031 and the transmitter 101 via a connecting part, or an integral connection between the first reflector 1031 and the transmitter 101. Similarly, the connection between the second reflector 1033 and the receiver 102 can also refer to the above-described possible methods.

[0088] This radar device is a side-axis optical system. The optical paths of the transmitter 101 and the receiver 102 are different. The physical distance between the transmitter 101 and the receiver 102, the divergence angle of the transmitting end composed of the light source and the transmitting lens, and the viewing angle of the receiving end composed of the receiver and the receiving lens together determine the effective ranging range of the side-axis optical system. The emitted light from the transmitting end should be as small as possible, and the viewing angle of the receiving end needs to be slightly larger than that of the transmitting end, but not by too much.

[0089] The radar device further includes a first collimating lens 104 and a second collimating lens 105. The first collimating lens 104 is used to convert the light beam emitted by the transmitter 101 into collimated light, and the second collimating lens 105 is used to focus the reflected light from the object being measured onto the receiver 102.

[0090] In some embodiments, the transmitter 101 is positioned at the focal point of the first collimating lens 104, and the receiver 102 is positioned at the focal point of the second collimating lens 105.

[0091] In this embodiment, the transmitter 101 and receiver 102 are respectively located on opposite sides of the mirror assembly, and their positions are decoupled. This allows for more flexible positioning of the first collimating lens 104 and the second collimating lens 105. As a result, the positions of the first collimating lens 104 and the second collimating lens 105 in the optical path can be adjusted, facilitating the connection or integral molding of the first collimating lens 104 and the second collimating lens 105 with other optical elements. Furthermore, by adjusting the positions of the first collimating lens 104 and the second collimating lens 105, the optical path of the mirror assembly can be reused, which helps to reduce the size of the radar device and achieve miniaturization of the radar device.

[0092] In addition, the transmitter 101 and receiver 102 of the radar device are separated, which separates the light transmission and reception paths, avoids interference between the emitted light beam and the light reflected from the object under test, and improves the measurement accuracy.

[0093] In some embodiments, referring again to FIG3, an angle α is formed between the mirror assembly and the rotation axis. This angle between the mirror assembly and the rotation axis facilitates the folding of the light beam, contributing to the miniaturization of the device.

[0094] In some embodiments, the angle α between the mirror assembly and the rotation axis satisfies: 35° ≤ α ≤ 50°. For example, the angle α between the mirror assembly and the rotation axis is 45°. This angle allows for a larger angle between the incident and emitted beams, resulting in better beam folding and further miniaturization of the device.

[0095] This application does not limit the structure of the mirror assembly. In some embodiments, as shown in FIG3, the mirror assembly includes a first reflecting mirror 1031 and a second reflecting mirror 1033. The first reflecting mirror 1031 and the second reflecting mirror 1033 are connected to a driving component 1032, which is used to drive the first reflecting mirror 1031 and the second reflecting mirror 1033 to rotate around a first rotation axis.

[0096] In some examples of this embodiment, the transmitter 101, the second reflector 1033, and the receiver 102 are arranged sequentially along a first direction, which is parallel to the first rotation axis O. The parallelism in this application may have some error; it is sufficient that the transmitter 101, the second reflector 1033, and the receiver 102 are arranged approximately along the first direction. Optionally, the angle between the first direction and the first rotation axis is less than or equal to 5°.

[0097] The transmitter 101 is used to emit a light beam to the first reflector 1031, the first reflector 1031 is used to reflect the light beam emitted by the transmitter 101 into the environment to be tested, and the second reflector 1033 is used to receive the reflected light from the object under test in the environment to be tested and transmit the reflected light to the receiver 102.

[0098] The radar device in this embodiment includes two reflectors, which can be used to adjust the optical path. Since the transmitter 101 and receiver 102 are respectively located on opposite sides of the mirror group, their positions are decoupled, making the positions of the first collimating lens 104 and the second collimating lens 105 more flexible. In this way, the positions of the first collimating lens 104 and the second collimating lens 105 in the optical path can be adjusted, realizing the multiplexing of the optical path of the two reflectors, which is beneficial to reducing the size of the radar device and realizing the miniaturization of the radar device.

[0099] In other embodiments, as shown in FIG4, FIG4 is a schematic diagram of another radar device provided in an embodiment of the present application. The mirror assembly includes: a first reflector 1031, the first reflector 1031 and the receiver 102 are connected to a driving component 1032, and the driving component 1032 is used to drive the first reflector 1031 and the receiver 102 to rotate around a first rotation axis.

[0100] In some examples of this embodiment, the transmitter 101, the first reflector 1031, and the receiver 102 are arranged sequentially along a first direction, which is parallel to the x-axis.

[0101] The transmitter 101 is used to emit a light beam to the first reflector 1031, the first reflector 1031 is used to reflect the light beam emitted by the transmitter 101 into the environment to be tested, and the receiver 102 is used to receive the reflected light from the object under test in the environment to be tested.

[0102] The radar device in this embodiment includes a first reflector 1031. The optical path of the beam emitted by the transmitter 101 can be adjusted through the first reflector 1031. Since the transmitter 101 and the receiver 102 are respectively arranged on opposite sides of the mirror group, their positions are decoupled, making the positions of the first collimating lens 104 and the second collimating lens 105 more flexible. In this way, the position of the first collimating lens 104 in the optical path can be adjusted, realizing the reuse of the optical path of the reflector, which is beneficial to reducing the size of the radar device and realizing the miniaturization of the radar device.

[0103] In other embodiments, as shown in FIG5, FIG5 is a schematic diagram of another radar device provided in an embodiment of the present application. The mirror assembly includes: a second reflector 1033, the second reflector 1033 and the transmitter 101 are both connected to a driving component 1032, and the driving component 1032 is used to drive the second reflector 1033 and the transmitter 101 to rotate around a first rotation axis.

[0104] In some examples of this embodiment, the transmitter 101, the second reflector 1033, and the receiver 102 are arranged sequentially along a first direction, which is parallel to the x-axis.

[0105] The transmitter 101 is used to emit a light beam into the environment to be tested, and the second reflector 1033 is used to receive the reflected light from the object under test in the environment to be tested and transmit the reflected light to the receiver 102.

[0106] The radar device in this embodiment includes a second reflector 1033. The optical path of the reflected light from the object being measured can be adjusted through the second reflector 1033. Since the transmitter 101 and the receiver 102 are respectively located on opposite sides of the mirror group, their positions are decoupled, making the positions of the first collimating lens 104 and the second collimating lens 105 more flexible. In this way, the positions of the first collimating lens 104 and the second collimating lens 105 in the optical path can be adjusted, realizing the reuse of the optical path of the second reflector 1033, which is beneficial to reducing the size of the radar device and realizing the miniaturization of the radar device.

[0107] This application does not impose any restrictions on the structure of the first collimating lens 104 and the second collimating lens 105, or on their positions in the optical path.

[0108] Taking the first collimating lens 104 as an example, in some embodiments, as shown in FIG6, FIG6 is a schematic diagram of another radar device provided in the embodiments of this application. The first collimating lens 104 can be disposed on the light-emitting side of the transmitter 101 and connected to the transmitter 101. The first collimating lens 104 includes: a chip-on-board (COB) lens and a metalens. For example, multiple COB lenses can be packaged on the light-emitting side of the transmitter 101. Alternatively, the metalens can be packaged on the light-emitting surface of the transmitter 101. In this case, the COB lens and the metalens are relatively small in size, and can be packaged on the light-emitting side of the transmitter 101 to convert the light beam emitted by the transmitter 101 into collimated light, which is beneficial to the miniaturization of the radar device.

[0109] In other embodiments, as shown in FIG3, the first collimating lens 104 is independently disposed from the first reflecting mirror 1031. The first collimating lens 104 is disposed on the light-emitting side of the first reflecting mirror 1031. The first collimating lens 104 is connected to the driving component 1032, for example, and can rotate synchronously with the first reflecting mirror 1031. The first collimating lens 104 can be a single lens with a long focal length. For example, the first collimating lens 104 includes a single spherical lens and a single aspherical lens. Thus, the first collimating lens 104 is disposed on the light-emitting side of the first reflecting mirror 1031. The focal length of the first collimating lens 104 can be the sum of the optical path between the first reflecting mirror 1031 and the transmitter 101, and the optical path between the first reflecting mirror 1031 and the first collimating lens 104. In this way, the first collimating lens 104 can reuse the optical path between the first reflecting mirror 1031 and the transmitter 101. Compared with disposing the first collimating lens 104 between the first reflecting mirror 1031 and the transmitter 101, the space occupied in the x-axis direction is reduced, which is beneficial to the miniaturization of the device.

[0110] In other embodiments, the first collimating lens 104 and the first reflecting mirror 1031 are integrally formed, for example, to form a first prism 106. For example, as shown in FIG7, FIG7 is a schematic structural diagram of another radar device provided in an embodiment of this application. The first prism 106 includes a first curved surface 1062 and a first reflective surface 1061. The first curved surface 1062 is disposed on the light-emitting side of the first reflective surface 1061. The first reflective surface 1061 is used to receive a light beam emitted by the transmitting module and reflect the light beam emitted by the transmitting module to the first curved surface 1062. The first curved surface 1062 is used to convert the light beam emitted by the transmitting module into collimated light and refract the collimated light into the environment to be measured. The curvature direction of the first curved surface 1062 is opposite to that of the first reflective surface 1061. The first curved surface 1062 can be part of the first collimating lens 104, and the reflective surface 1061 is part of the first reflecting mirror 1031.

[0111] Alternatively, as shown in Figure 8, which is a schematic diagram of another radar device provided in an embodiment of this application, the radar device includes a first prism 106. The first prism 106 includes a second curved surface 1063 and a first reflective surface 1061. The second curved surface 1063 is disposed on the light-receiving side of the first reflective surface 1061. The second curved surface 1063 is used to convert the light beam emitted by the transmitting module into collimated light. The first reflective surface 1061 is used to receive the collimated light and reflect it into the environment to be measured. The curvature direction of the second curved surface 1063 faces the first reflective surface 1061.

[0112] Thus, in this embodiment, the first collimating lens 104 and the first reflecting mirror 1031 are integrally formed to form a prism, which can reduce the number of optical elements. The reflection and refraction of light can be achieved through a single optical element, which is beneficial for the miniaturization of radar devices.

[0113] Optionally, the first collimating lens 104 and / or the first reflecting mirror 1031 can also be placed on the same component through some connection method, wherein the first collimating lens 104 and / or the first reflecting mirror 1031 can be connected to the component through a connector or a bonding connection, etc.

[0114] Alternatively, as shown in Figure 9, which is a schematic diagram of another radar device provided in an embodiment of this application, the first prism 106 includes a first curved surface 1062, a second curved surface 1063, and a first reflective surface 1061. The first curved surface 1062 is disposed on the light-emitting side of the first reflective surface 1061, and the second curved surface 1063 is disposed on the light-receiving side of the first reflective surface 1061. The second curved surface 1063 and the first curved surface 1062 are used to convert the received light beam into collimated light. The bending direction of the first curved surface 1062 is away from the first reflective surface 1061, and the bending direction of the second curved surface 1063 is towards the first reflective surface 1061.

[0115] Thus, both the second curved surface 1063 and the first curved surface 1062 can be used to collimate the light emitted by the transmitter. By cooperating with the second curved surface 1063 and the first curved surface 1062, the collimation performance of the prism for the optical path can be improved. Moreover, compared with setting only one curved surface, the collimation of the optical path can be achieved within a shorter optical path, and the volume of the prism can be reduced to further realize the miniaturization of the radar device.

[0116] In some embodiments, as shown in FIG3, the sum of the optical path D1 between the first collimating lens 104 and the first reflecting mirror 1031 and the optical path D2 between the first reflecting mirror 1031 and the transmitter 101 is equal to the focal length of the first collimating lens 104. Thus, the transmitter is positioned at the focal point of the first collimating lens, and the first reflecting mirror can fold the optical path between the first collimating lens and the transmitter, which is beneficial for miniaturization of the device. Furthermore, the first collimating lens and the first reflecting mirror can reuse the optical path between the transmitter and the first reflecting mirror, further achieving miniaturization of the device. The optical path D1 is, for example, the distance between the center of the first collimating lens 104 and the center of the first reflecting mirror 1031. The optical path D2 is, for example, the distance between the center of the first reflecting mirror 1031 and the center of the transmitter 101.

[0117] Taking the second collimating lens 105 as an example, in some embodiments, as shown in FIG6, the second collimating lens 105 can be disposed on the light-inlet side of the receiver 102 and connected to the receiver 102. The second collimating lens 105 includes: a chip-on-board (COB) lens and a metalen. For example, multiple COB lenses can be packaged on the light-inlet side of the receiver 102. Alternatively, the metalen can be packaged on the light-inlet surface of the receiver 102. The COB lens and the metalen are relatively small in size, and their packaging on the light-inlet side of the receiver 102 can focus the collimated light reflected from the object under test onto the receiver 102, which is beneficial for the miniaturization of the radar device.

[0118] In other embodiments, as shown in FIG3, the second collimating lens 105 and the second reflecting mirror 1033 are independently disposed. The second collimating lens 105 is disposed on the light-incoming side of the second reflecting mirror 1033. The second collimating lens 105 is connected to the driving component 1032, for example, and can rotate synchronously with the second reflecting mirror 1033. The second collimating lens 105 can be a single lens with a long focal length. For example, the second collimating lens 105 includes a single spherical lens and a single aspherical lens. Thus, the second collimating lens 105 is disposed on the light-inlet side of the second reflecting mirror 1033. The focal length of the second collimating lens 105 can be the sum of the optical path between the second reflecting mirror 1033 and the receiver 102, and the optical path between the second reflecting mirror 1033 and the second collimating lens 105. In this way, the second collimating lens 105 can reuse the optical path between the second reflecting mirror 1033 and the receiver 102. Compared with disposing the second collimating lens 105 between the second reflecting mirror 1033 and the receiver 102, the space occupied in the x-axis direction is reduced, which is beneficial to the miniaturization of the device.

[0119] In other embodiments, the second collimating lens 105 and the second reflecting mirror 1033 are integrally formed to form a second prism 107. For example, as shown in FIG7, the second prism 107 includes a third curved surface 1072 and a second reflective surface 1071. The third curved surface 1072 is disposed on the light-emitting side of the second reflective surface 1071. The second reflective surface 1071 is used to receive collimated light reflected from the object under test and reflect the collimated light reflected from the object under test to the third curved surface 1072. The third curved surface 1072 is used to converge the collimated light reflected from the object under test and refract the converged light to the receiver 102. The curvature direction of the third curved surface 1072 is opposite to that of the second reflective surface 1071.

[0120] Alternatively, as shown in Figure 8, the radar device includes a second prism 107, which comprises a fourth curved surface 1073 and a second reflective surface 1071. The fourth curved surface 1073 is disposed on the light-incoming side of the second reflective surface 1071. The fourth curved surface 1073 is used to converge the collimated light reflected by the object under test to the second reflective surface 1071. The second reflective surface 1071 is used to receive the light refracted by the fourth curved surface 1073 and reflect the refracted light to the receiver 102. The curvature direction of the fourth curved surface 1073 faces the second reflective surface 1071. Thus, in this embodiment, the second collimating lens 105 and the second reflector 1033 are integrally formed into a prism, which can reduce the number of optical elements. Reflection and refraction of light can be achieved through a single optical element, which is beneficial for the miniaturization of the radar device.

[0121] Alternatively, as shown in Figure 9, the second prism 107 includes a third curved surface 1072, a fourth curved surface 1073, and a second reflective surface 1071. The third curved surface 1072 is disposed on the light-emitting side of the second reflective surface 1071, and the fourth curved surface 1073 is disposed on the light-incoming side of the second reflective surface 1071. The fourth curved surface 1073 is used to converge the collimated light reflected by the object under test to the second reflective surface 1071. The second reflective surface 1071 is used to receive the light refracted by the fourth curved surface 1073 and reflect the refracted light to the third curved surface 1072. The third curved surface 1072 is used to converge the collimated light reflected by the object under test and refract the converged light to the receiver 102.

[0122] Thus, both the third and fourth curved surfaces can be used to converge the received light. By combining the second and first curved surfaces, the focusing performance of the prism on the light path can be improved. Moreover, compared with setting only one curved surface, the light can be converged within a shorter optical path, and the volume of the prism can be reduced to further achieve miniaturization of the radar device.

[0123] Optionally, the second collimating lens 105 and the second reflecting mirror 1033 can also be placed on the same component through some connection method, wherein the second collimating lens 105 and the second reflecting mirror 1033 can be connected to the component through a connector or a bonding connection, etc.

[0124] In some embodiments, as shown in FIG3, the sum of the optical path D3 between the second collimating lens 105 and the second reflecting mirror 1033 and the optical path D4 between the second reflecting mirror 1033 and the receiver 102 is equal to the focal length of the second collimating lens 105. Thus, the receiver is positioned at the focal point of the second collimating lens, and the two reflecting mirrors can fold the optical paths of the second collimating lens and the receiver, which is beneficial for miniaturization of the device. Furthermore, the second collimating lens and the second reflecting mirror can reuse the optical path between the receiver and the second reflecting mirror, further achieving miniaturization of the device. The optical path D3 is, for example, the distance between the center of the second collimating lens 105 and the center of the second reflecting mirror 1033. The optical path D4 is, for example, the distance between the center of the second reflecting mirror 1033 and the center of the receiver 102.

[0125] The structure of the radar device provided in the embodiments of this application will be described below with reference to Figures 3-9.

[0126] In some embodiments, the scanning mechanism 103 of the radar device includes two mirrors: a first mirror 1031 and a second mirror 1033. A first collimating lens 104 is disposed on the light-emitting side of the first mirror 1031 (to the left of the second mirror 1033 in FIG. 3), and a second collimating lens 105 is disposed on the light-receiving side of the second mirror 1033 (to the left of the second mirror 1033 in FIG. 3). The first collimating lens 104 and the second collimating lens 105 are arranged sequentially along a second direction, which is, for example, parallel to the first direction.

[0127] As shown in Figure 3, the scanning mechanism 103 of the radar device includes: a first reflector 1031, a second reflector 1033 and a driving mechanism. The first reflector 1031 and the second reflector 1033 are connected to the driving mechanism, which is used to drive the first reflector 1031 and the second reflector 1033 to rotate around the first rotation axis O.

[0128] In some embodiments, the first collimating lens 104 can rotate synchronously with the first reflecting mirror 1031, and the second collimating lens 105 can rotate synchronously with the second reflecting mirror 1033.

[0129] The first collimating lens 104 includes a single spherical lens and a single aspherical lens. The second collimating lens 105 may adopt the same structure as the first collimating lens 104.

[0130] When the radar device is working, the transmitter 101 emits a light beam toward the first reflector 1031. The first reflector 1031 reflects the light beam emitted by the transmitter 101 to the first collimating lens 104. The first collimating lens 104 converts the light reflected by the first reflector 1031 into collimated light rays and refracts the collimated light rays into the environment under test. The second collimating lens 105 can receive the reflected light from the object under test in the environment under test and converge the reflected light from the object under test to the second reflector 1033. The second reflector 1033 reflects the light rays converged by the second collimating lens 105 to the receiver 102.

[0131] The radar device provided in this embodiment has a first collimating lens 104 that can reuse the optical path between the first reflector 1031 and the transmitter 101, and a second collimating lens 105 that can reuse the optical path between the second reflector 1033 and the receiver 102, which reduces the space occupied in the x-axis direction and is beneficial to the miniaturization of the device.

[0132] In some embodiments, as shown in FIG6, the scanning mechanism 103 of the radar device includes two reflectors: a first reflector 1031 and a second reflector 1033. The first collimating lens 104 can be disposed on the light-emitting side of the transmitter 101 and connected to the transmitter 101. The second collimating lens 105 can be disposed on the light-receiving side of the receiver 102 and connected to the receiver 102.

[0133] The structure of the scanning mechanism 103 can be referred to in the embodiment shown in Figure 5 above, and will not be described again here.

[0134] The first collimating lens 104 includes a chip-on-board (COB) lens and a metalens. For example, multiple COB lenses can be packaged on the light-emitting side of the emitter 101. The second collimating lens 105 can adopt the same structure as the first collimating lens 104.

[0135] When the radar device is working, the transmitter 101 emits a light beam toward the first collimating lens 104. The first collimating lens 104 converts the light beam emitted by the transmitter 101 into collimated light and refracts the collimated light to the first reflecting mirror 1031. The collimated light is reflected by the first reflecting mirror 1031 into the environment to be measured. The second reflecting mirror 1033 can receive the reflected light from the object under test in the environment to be measured and reflect the reflected light from the object under test to the second collimating lens 105. The second collimating lens 105 focuses the light reflected by the second reflecting mirror 1033 onto the receiver 102.

[0136] In other embodiments, as shown in Figures 7 and 8, the first collimating lens 104 and the first reflecting mirror 1031 can be placed on the same component, and the second collimating lens 105 and the second reflecting mirror 1033 can be placed on the same component. Optionally, the first collimating lens 104 and the first reflecting mirror 1031 are integrally formed, and the second collimating lens 105 and the second reflecting mirror 1033 are integrally formed.

[0137] For example, as shown in Figure 7, the first prism 106 includes a first curved surface 1062 and a first reflective surface 1061. The first curved surface 1062 is disposed on the light-emitting side of the first reflective surface 1061. The first reflective surface 1061 is used to receive the light beam emitted by the transmitting module and reflect the light beam emitted by the transmitting module back to the first curved surface 1062. The first curved surface 1062 is used to convert the light beam emitted by the transmitting module into collimated light and refract the collimated light into the environment to be measured. The first curved surface 1062 can serve as a first collimating lens, and the first reflective surface 1061 can serve as a first reflecting mirror. In this embodiment, the second curved surface 1063 being disposed on the light-emitting side of the first reflective surface 1061 is equivalent to the first collimating lens being disposed on the light-emitting side of the first reflecting mirror.

[0138] The second prism 107 includes a third curved surface 1072 and a second reflective surface 1071. The third curved surface 1072 is disposed on the light-inlet side of the second reflective surface 1071. The third curved surface 1072 is used to converge the collimated light reflected from the object under test onto the second reflective surface 1071. The second reflective surface 1071 is used to receive the light refracted by the third curved surface 1072 and reflect the refracted light to the receiver 102. The third curved surface 1072 can be a convex surface. The third curved surface 1072 can serve as a second collimating lens, and the second reflective surface 1071 can serve as a second reflecting mirror. In this embodiment, the third curved surface 1072 is disposed on the light-inlet side of the second reflective surface 1071, which is equivalent to the second collimating lens being disposed on the light-inlet side of the second reflecting mirror.

[0139] Alternatively, as shown in Figure 8, the radar device includes a first prism 106 and a second prism 107. The first prism 106 includes a second curved surface 1063 and a first reflective surface 1061. The second curved surface 1063 is disposed on the light-incoming side of the first reflective surface 1061. The second curved surface 1063 is used to convert the light beam emitted by the transmitting module into collimated light. The first reflective surface 1061 is used to receive the collimated light and reflect it into the environment to be measured. The second curved surface 1063 can be concave. The second curved surface 1063 can serve as a first collimating lens, and the first reflective surface 1061 can serve as a first reflecting mirror. In this embodiment, the second curved surface 1063 being disposed on the light-incoming side of the first reflective surface 1061 is equivalent to the first collimating lens being disposed on the light-incoming side of the first reflecting mirror; for example, the first collimating lens is disposed between the first reflecting mirror and the transmitter.

[0140] The second prism 107 includes a fourth curved surface 1073 and a second reflective surface 1071. The fourth curved surface 1073 is disposed on the light-emitting side of the second reflective surface 1071. The second reflective surface 1071 receives collimated light reflected from the object under test and reflects the collimated light reflected from the object under test back to the fourth curved surface 1073. The fourth curved surface 1073 converges the collimated light reflected from the object under test and refracts the converged light to the receiver 102. The fourth curved surface 1073 can serve as a second collimating lens, and the second reflective surface 1071 can serve as a second reflecting mirror. In this embodiment, the fourth curved surface 1073 is disposed on the light-emitting side of the second reflective surface 1071, which is equivalent to the second collimating lens being disposed on the light-emitting side of the second reflecting mirror. For example, the second collimating lens is disposed between the second reflecting mirror and the receiver.

[0141] Thus, in this embodiment, the first collimating lens 104 and the first reflecting mirror 1031 are formed into a first prism 106, and the second collimating lens 105 and the second reflecting mirror 1033 are formed into a second prism 107. This reduces the number of optical elements, and the reflection and refraction of the light path can be achieved through a single optical element, which is beneficial for the miniaturization of radar devices.

[0142] Alternatively, as shown in Figure 9, the radar device includes a first prism 106 and a second prism 107. The first prism 106 includes a first curved surface 1062, a second curved surface 1063, and a first reflective surface 1061. The second curved surface 1063 is disposed on the light-emitting side of the first reflective surface 1061. The first reflective surface 1061 is used to receive the light beam emitted by the transmitting module and reflect the light beam emitted by the transmitting module to the first curved surface 1062. The first curved surface 1062 is used to convert the light beam emitted by the transmitting module into collimated light and refract the collimated light into the environment to be measured. The curvature direction of the first curved surface 1062 is away from the first reflective surface 1061, and the curvature direction of the second curved surface 1063 is towards the first reflective surface 1061.

[0143] Thus, both the second curved surface 1063 and the first curved surface 1062 can be used to collimate the light emitted by the transmitter. By cooperating with the second curved surface 1063 and the first curved surface 1062, the collimation performance of the prism for the optical path can be improved. Moreover, compared with setting only one curved surface, the collimation of the optical path can be achieved within a shorter optical path, and the volume of the prism can be reduced to further realize the miniaturization of the radar device.

[0144] In other embodiments, the scanning mechanism 103 of the radar device includes only one reflector. For example, as shown in FIG4, the scanning mechanism 103 includes: a first reflector 1031.

[0145] The first reflector 1031 and receiver 102 are connected to the driving component 1032, which drives the first reflector 1031 and receiver 102 to rotate around a first rotation axis. The first collimating lens 104 includes a single spherical lens and a single aspherical lens. The second collimating lens 105 may have the same structure as the first collimating lens 104.

[0146] When the radar device is working, the transmitter 101 is used to emit a light beam to the first reflector 1031. The first reflector 1031 is used to reflect the light beam emitted by the transmitter 101 to the first collimating lens 104. The first collimating lens 104 converts the light reflected by the first reflector 1031 into collimated light rays and refracts the collimated light rays into the environment under test. The second collimating lens 105 can receive the reflected light from the object under test in the environment under test and converge the reflected light from the object under test to the receiver 102.

[0147] In this embodiment, the optical path length between the second collimating lens 105 and the receiver 102 is equal to the optical path length between the first collimating lens 104 and the transmitter 101. The first reflector 1031 folds part of the optical path between the first collimating lens 104 and the transmitter 101, reducing the size of part of the radar device and realizing the miniaturization of the radar device.

[0148] In some other embodiments, as shown in FIG5, the scanning mechanism 103 includes a second reflector 1033.

[0149] The second reflector 1033 and the emitter 101 are connected to the drive component 1032, which drives the second reflector 1033 and the emitter 101 to rotate around the first rotation axis. The first collimating lens 104 includes a single spherical lens and a single aspherical lens. The second collimating lens 105 may have the same structure as the first collimating lens 104.

[0150] When the radar device is working, the transmitter 101 emits a light beam to the first collimating lens 104. The first collimating lens 104 converts the light beam emitted by the transmitter 101 into collimated light and refracts the collimated light into the environment to be measured. The second collimating lens 105 can receive the reflected light from the object under test in the environment to be measured and converge the reflected light from the object under test to the second reflecting mirror 1033. The second reflecting mirror 1033 reflects the light converged by the second collimating lens 105 to the receiver 102.

[0151] In this embodiment, the optical path length between the second collimating lens 105 and the receiver 102 is equal to the optical path length between the first collimating lens 104 and the transmitter 101. The second reflector 1033 folds part of the optical path between the second collimating lens 105 and the receiver 102, reducing the size of part of the radar device and realizing the miniaturization of the radar device.

[0152] In the above embodiments, the first collimating lens 104 and the second collimating lens 105 in each radar device are of the same type. In other embodiments, the first collimating lens 104 and the second collimating lens 105 may be of different types.

[0153] In some embodiments, as shown in FIG10, FIG10 is a schematic diagram of another radar device provided in an embodiment of the present application. A first collimating lens and a first reflecting mirror form a first prism 106. For example, the first collimating lens and the first reflecting mirror are integrally formed by means of a prism.

[0154] The second collimating lens 105 is separated from the second reflecting mirror 1033. The second collimating lens 105 can be a single lens with a relatively long focal length.

[0155] The first prism 106 includes a first curved surface 1062, a second curved surface 1063, and a first reflective surface 1061. The second curved surface 1063 is disposed on the light-emitting side of the first reflective surface 1061. The first reflective surface 1061 receives the light beam emitted by the transmitting module and reflects the light beam to the first curved surface 1062. The first curved surface 1062 converts the light beam emitted by the transmitting module into collimated light and refracts the collimated light into the environment under test. The curvature direction of the first curved surface 1062 is away from the first reflective surface 1061, and the curvature direction of the second curved surface 1063 is towards the first reflective surface 1061.

[0156] Thus, both the second curved surface 1063 and the first curved surface 1062 can be used to collimate the light emitted by the transmitter. By cooperating with the second curved surface 1063 and the first curved surface 1062, the collimation performance of the prism for the optical path can be improved. Moreover, compared with setting only one curved surface, the collimation of the optical path can be achieved within a shorter optical path, and the volume of the prism can be reduced to further realize the miniaturization of the radar device.

[0157] The second collimating lens 105 is disposed on the light-incident side of the second reflecting mirror 1033. The second collimating lens 105 is connected, for example, to the driving component 1032, and can rotate synchronously with the second reflecting mirror 1033. The second collimating lens 105 can be a single lens with a long focal length; for example, the second collimating lens 105 includes a single spherical lens and a single aspherical lens. Thus, the second collimating lens 105, disposed on the light-incident side of the second reflecting mirror 1033, has a focal length that can be the sum of the optical paths between the second reflecting mirror 1033 and the receiver 102, and the optical paths between the second reflecting mirror 1033 and the second collimating lens 105. Thus, the second collimating lens 105 can reuse the optical path between the second reflecting mirror 1033 and the receiver 102. Compared with placing the second collimating lens 105 between the second reflecting mirror 1033 and the receiver 102, it reduces the space occupied in the x-axis direction, which is beneficial to the miniaturization of the device.

[0158] In this embodiment, the first collimating lens and the second collimating lens adopt different structures, allowing for more flexible manufacturing processes.

[0159] In other embodiments, as shown in FIG11, FIG11 is a schematic diagram of another radar device provided in an embodiment of the present application. The scanning mechanism 103 includes: a second reflector 1033 and a driving component 1032.

[0160] The second reflector 1033 and the emitter 101 are connected to the drive component 1032, which drives the second reflector 1033 and the emitter 101 to rotate around the first rotation axis. The first collimating lens 104 includes: a chip-on-board (COB) lens and a metalens.

[0161] The second collimating lens 105 includes: a single spherical lens and a single aspherical lens.

[0162] When the radar device is working, the transmitter 101 emits a light beam to the first collimating lens 104. The first collimating lens 104 converts the light beam emitted by the transmitter 101 into collimated light and refracts the collimated light into the environment to be measured. The second collimating lens 105 can receive the reflected light from the object under test in the environment to be measured and converge the reflected light from the object under test to the second reflecting mirror 1033. The second reflecting mirror 1033 reflects the light converged by the second collimating lens 105 to the receiver 102.

[0163] In this embodiment, the second reflector 1033 folds part of the optical path between the second collimating lens 105 and the receiver 102, reducing the size of a part of the radar device. The first collimating lens 104 adopts the COB small lens or super lens, which is small in size. It can be encapsulated on the light-inlet side of the receiver 102 to converge the collimated light reflected by the object under test to the receiver 102, which is conducive to the miniaturization of the radar device and further realizes the miniaturization of the radar device.

[0164] Figures 10 and 11 are merely illustrative examples of two combinations of the first and second collimating lenses with different structures. In other embodiments, the second collimating lens and the second reflector may be an integral prism, and the first collimating lens may be a single lens with a longer focal length. Alternatively, one of the two collimating lenses may be an integral prism with the reflector, and the other collimating lens may be a COB miniature lens or a superlens. Or, one of the two collimating lenses may be a single lens with a longer focal length, and the other collimating lens may be a COB miniature lens or a superlens. Further details are omitted here, and all of these fall within the scope of this application.

[0165] In some embodiments, the radar device provided in this application may further include a housing, which is mounted on an electronic device, and the radar device is disposed within the housing. Furthermore, the housing may have notches for the beam to exit and for reflected light to enter.

[0166] Possible application scenarios for the radar device solutions described above include, but are not limited to, installing the radar devices designed in the above solutions onto devices such as smart displays or office electronic whiteboards. Through the positioning and coordination between the radar device and the object being measured (such as a stylus, touch glove, electronic pointer, or the user's bare finger), users can perform touch and / or writing operations on the display screen or other devices, improving the user experience. Specifically, for example, the radar device can locate objects on the smart screen plane to obtain the object's position information. A pressure sensor on the target's head can be used to identify the pressed / released state of the target, and writing and drawing can be achieved by combining this with the positioning information. An algorithm calculates the detailed coordinates of the object's position and transmits the coordinate information to the smart screen. The smart screen receives the coordinates of the touched target, achieving interactive purposes such as writing and clicking. In this way, without increasing the hardware cost on the smart screen, only miniaturized accessories are needed to realize the touch interaction logic.

[0167] As one possible implementation, as shown in Figure 12, which is a structural block diagram of a radar device provided in an embodiment of this application, the radar device 10 may include, for example, a ranging and angle measuring unit 100, a control unit 200, a wireless transmission unit 300, a wired transmission unit 400, a transmitter 101, and a receiver 102. The ranging and angle measuring unit 100, the wireless transmission unit 300, the wired transmission unit 400, the transmitter 101, and the receiver 102 are all connected to the control unit 200.

[0168] The ranging and angle measuring unit 100 is used to obtain the distance and angle between the target appearing on the display screen and the specified position of the television. The yz coordinates of the target on the display screen can be obtained through coordinate system transformation.

[0169] The control unit 200 is used to control the work scheduling of the entire device, read the point cloud data of the ranging and angle measuring unit 100, and can also transmit the acquired data to the smart screen via wired or wireless means.

[0170] In some embodiments, the control unit 200 is signal-connected to the transmitter 101, and the control unit 200 is used to drive the transmitter 101 to emit a light beam. The control unit 200 is also signal-connected to the receiver 102, and the control unit 200 is used to acquire first information based on the light beam emitted by the transmitter 101 and the light beam received by the receiver 102, the first information being used to determine the position of the object being measured.

[0171] In some embodiments, the control unit 200 may be a microprocessor, central processing unit, main processor, microcontroller, controller, or application-specific integrated circuit (ASIC), etc. It connects to the transmitter 101 and the receiver 102 through various interfaces and lines, executes various types of digital storage instructions, and calculates the distance between the radar device and the object being measured according to the algorithm.

[0172] In some embodiments, the control unit 200 may be mounted on the circuit board where the receiver 102 is located. The control unit 200 may implement the above-described distance calculation method in the form of a simple circuit, which will not be described in detail here.

[0173] The wireless transmission unit 300 is used to transmit information to the cooperating target and obtain the pressure value and attitude information of the cooperating target.

[0174] The wired transmission unit 400 is used to transmit information to the smart screen, transmitting the point cloud data acquired by the ranging and angle measuring unit 100 and the pen information transmitted by the wireless transmission unit 300 to the smart screen via a wired connection.

[0175] This application also provides an electronic device, and Figure 13 is a structural block diagram of an electronic device provided in this application embodiment. As shown in Figure 13, the electronic device 1 includes: a display screen 20, a processing unit 11, and a radar device 10 as described above. The processing unit 11 is used to acquire the first information and determine the position of the object being measured based on the first information. In this way, the electronic device can determine the position of the object being measured based on the first information collected by the radar device, and through the positioning cooperation between the radar device and the object being measured, it can realize touch and / or writing operations on the display screen and other devices, thereby improving the user experience.

[0176] The processing unit 11 is used to filter position information within a specified range from the first information to determine the position of the object being measured. This specified range can be a range input by the user or a valid range obtained from the first information. Within this specified range, the processing unit can obtain the position information of the object to be measured in front of the display screen to determine the position of the object.

[0177] Processing unit 11 may include an application processor (AP), a microcontroller unit (MCU), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors. For example, the application processor may include a graphics processor and a digital signal processor, and the microcontroller unit may include a graphics processor.

[0178] Electronic devices implement display functions through GPUs, display screens 20, application processors, microcontrollers, etc. The GPU is a microprocessor for image processing, connected to the display screen 20, application processor, and microcontroller. The GPU is used to perform mathematical and geometric calculations and for graphics rendering. Processing unit 11 may include one or more GPUs, which execute program instructions to generate or modify display information.

[0179] The controller can generate operation control signals based on the instruction opcode and timing signals to complete the control of instruction fetching and execution.

[0180] The processing unit 11 may also include a memory for storing instructions and data. In some embodiments, the memory in the processing unit 11 is a cache memory. This memory can store instructions or data that the processing unit 11 has just used or that are used repeatedly. If the processing unit 11 needs to use the instruction or data again, it can directly retrieve it from the memory. This avoids repeated accesses, reduces the waiting time of the processing unit 11, and thus improves the efficiency of the system.

[0181] In some embodiments, the processing unit 11 may include one or more interfaces. Interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0182] This application embodiment does not limit the connection method between the radar device 10 and the electronic device 1.

[0183] In some embodiments, as shown in FIG13, the radar device 10 is part of the electronic device 1.

[0184] In other embodiments, as shown in FIG14, FIG14 is a structural block diagram of another electronic device provided in an embodiment of the present application. The radar device 10 can be a separate entity, and the radar device 10 is electrically connected to the electronic device 1.

[0185] In some embodiments, the radar device 10 can be connected to the electronic device 1 via a USB interface. The USB interface is an interface that conforms to the USB standard specification, specifically a Mini USB interface, a Micro USB interface, a USB Type-C interface, etc. The USB interface can be used for data transmission between the radar device 10 and the electronic device 1.

[0186] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The device and apparatus embodiments described above are merely illustrative. Modules described as separate components may or may not be physically separate. Components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0187] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A radar device, characterized by include: The device comprises a transmitter, a receiver, a first collimating lens, a second collimating lens, and a scanning mechanism; the scanning mechanism includes a lens assembly and a driving component connected to the lens assembly, the driving component being used to drive the lens assembly, the first collimating lens, and the second collimating lens to rotate about a first rotation axis. The transmitter and the receiver are disposed on opposite sides of the mirror assembly; the mirror assembly includes: a first reflector and / or a second reflector; The first reflector is used to reflect the light beam emitted by the transmitter into the environment to be measured, and the first collimating lens is used to convert the light beam emitted by the transmitter into collimated light rays; The second reflector is used to reflect the reflected light from the object under test in the test environment to the receiver, and the second collimating lens is used to converge the reflected light from the object under test in the test environment to the receiver.

2. The radar apparatus according to claim 1, characterized by The first collimating lens and the first reflecting mirror are set independently, and the first collimating lens is set on the light-emitting side of the first reflecting mirror.

3. The radar apparatus of claim 1, wherein, The first collimating lens and the first reflecting mirror are disposed in the same component. The first collimating lens includes a first curved surface, which is disposed on the light-emitting side of the first reflecting mirror, and the curvature direction of the first curved surface is away from the first reflecting mirror.

4. The radar device according to claim 2 or 3, characterized in that, The sum of the optical path between the first collimating lens and the first reflecting mirror and the optical path between the first reflecting mirror and the transmitter is equal to the focal length of the first collimating lens.

5. The radar device according to claim 1 or 3, characterized in that, The first collimating lens and the first reflecting mirror are disposed in the same component. The first collimating lens includes a second curved surface, which is disposed on the light-incoming side of the reflecting mirror, and the curvature direction of the second curved surface is toward the first reflecting mirror.

6. The radar apparatus of claim 5, wherein, The first collimating lens is disposed on the light-emitting side of the transmitter, and the first collimating lens is connected to the transmitter.

7. The radar device according to claim 6, characterized in that, The first collimating lens includes: an integrated COB lens and a superlens.

8. The radar device according to any one of claims 1-7, characterized in that, The second collimating lens and the second reflecting mirror are set independently, with the second collimating lens set on the light-incoming side of the second reflecting mirror.

9. The radar device according to any one of claims 1-7, characterized in that, The second collimating lens and the second reflecting mirror are disposed in the same component. The second collimating lens includes a third curved surface, which is disposed on the light-incoming side of the second reflecting mirror, and the curvature direction of the third curved surface is away from the second reflecting mirror.

10. The radar device according to claim 8 or 9, characterized in that, The sum of the optical path length between the second collimating lens and the second reflecting mirror and the optical path length between the second reflecting mirror and the receiver is equal to the focal length of the second collimating lens.

11. The radar device according to claims 1-7, characterized in that, The second collimating lens and the second reflecting mirror are disposed in the same component. The second collimating lens includes a fourth curved surface, which is disposed between the second reflecting mirror and the receiver, and the curvature direction of the fourth curved surface is toward the second reflecting mirror.

12. The radar device according to any one of claims 1-7, characterized in that, The second collimating lens is disposed on the light-inlet side of the receiver, and the second collimating lens is connected to the receiver.

13. The radar device according to claim 12, characterized in that, The second collimating lens includes: an integrated COB lens and a superlens.

14. The radar device according to claim 1, characterized in that, The first collimating lens and the first reflecting mirror are independently configured, with the first collimating lens located on the light-emitting side of the first reflecting mirror. The second collimating lens and the second reflecting mirror are independently configured, with the second collimating lens located on the light-incoming side of the second reflecting mirror.

15. The radar device according to claim 1, characterized in that, The first collimating lens and the first reflecting mirror are disposed in the same component, and the second collimating lens and the second reflecting mirror are disposed in the same component. The first collimating lens includes a first curved surface disposed on the light-emitting side of the first reflecting mirror, and the curvature direction of the first curved surface is opposite to that of the first reflecting mirror. The second collimating lens includes a third curved surface disposed on the light-incoming side of the second reflecting mirror, and the curvature direction of the third curved surface is opposite to that of the second reflecting mirror.

16. The radar device according to claim 1 or 15, characterized in that, The first collimating lens and the first reflecting mirror are disposed in the same component, and the second collimating lens and the second reflecting mirror are disposed in the same component; the first collimating lens includes: a second curved surface, the second curved surface is disposed on the light-incoming side of the reflecting mirror, and the curvature direction of the second curved surface is towards the first reflecting mirror; the second collimating lens includes: a fourth curved surface, the fourth curved surface is disposed between the second reflecting mirror and the receiver, and the curvature direction of the fourth curved surface is towards the second reflecting mirror.

17. The radar device according to claim 1, characterized in that, The first collimating lens and the first reflecting mirror are disposed in the same component, while the second collimating lens and the second reflecting mirror are disposed independently. The first collimating lens includes a first curved surface and a second curved surface. The first curved surface is disposed on the light-emitting side of the first reflecting mirror, and the curvature direction of the first curved surface is away from the first reflecting mirror. The second curved surface is disposed on the light-incoming side of the first reflecting mirror, and the curvature direction of the second curved surface is towards the first reflecting mirror. The second collimating lens is disposed on the light-incoming side of the second reflecting mirror.

18. The radar device according to any one of claims 1-17, characterized in that, An angle α is formed between the mirror assembly and the rotation axis.

19. The radar device according to claim 18, characterized in that, The included angle α between the mirror assembly and the rotation axis satisfies: 35°≤a≤50°。 20. The radar device according to any one of claims 1-19, characterized in that, The driving component includes any one of the following: a motor, a dual-axis voice coil motor, and a microelectromechanical motor.

21. The radar device according to claim 1, characterized in that, The transmitter, the mirror assembly, and the receiver are arranged sequentially along a first direction, which is parallel to the first rotation axis.

22. The radar device according to claim 1, characterized in that, The mirror assembly includes: a first reflecting mirror; the receiver is connected to the driving component; and the driving component is also used to drive the receiver to rotate around the first rotation axis.

23. The radar device according to claim 1, characterized in that, The mirror assembly includes a second reflector, and the transmitter is connected to the driving component, which is also used to drive the transmitter to rotate around the first rotation axis.

24. The radar device according to any one of claims 1-23, characterized in that, The radar device also includes a control unit; the control unit is signal-connected to the transmitter, and the control unit is used to drive the transmitter to emit a beam.

25. The radar apparatus of claim 24, wherein, The control unit and the receiver are signal-connected; the control unit is used to obtain first information based on the beam emitted by the transmitter and the beam received by the receiver, and the first information is used to determine the position of the object being measured.

26. The radar device according to any one of claims 3-7, 9-11, or 15-17, characterized in that, The same component is of the type of prism.

27. The radar device according to claim 26, characterized in that, The prism is integrally molded.

28. An electronic device, characterized in that, include: The radar device includes any one of claims 1 to 27.

29. The electronic device according to claim 28, characterized in that, The electronic device includes a display screen and a bezel surrounding the display screen.

30. The electronic device according to claim 29, characterized in that, The radar device is mounted on the frame.

31. The electronic device according to claim 30, characterized in that, The radar device is positioned in the middle of the frame.

32. The electronic device according to any one of claims 29-31, characterized in that, The radar device has a scanning angle of 360°.

33. The electronic device according to any one of claims 29-32, characterized in that, The electronic device includes a processing unit, which is used to acquire first information and determine the position of the object being measured based on the first information.

34. The electronic device according to claim 33, characterized in that, The processing unit is used to filter location information within a specified range from the first information to determine the location of the object being measured.

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