Light splitting device and related product

Abstract

A light splitting device and related products are applied to the technical field of optical imaging. The light splitting device comprises a light machine support and a light splitting assembly. Wherein the ray machine support comprises a first containing cavity and a second containing cavity which are sequentially arranged from the object side to the image side, the first containing cavity is used for containing an optical lens, the second containing cavity is used for containing a light splitting assembly, and the light splitting assembly is used for receiving light of the optical lens and conducting light splitting transmission on the light of the optical lens. At least one abutting side of the light splitting assembly abuts against the inner wall face of the second containing cavity, and at least one bonding side of the light splitting assembly is bonded and fixed to the inner wall face of the second containing cavity through a bonding agent. The light splitting device can realize light splitting transmission in a multi-sensor imaging scene. In addition, the light splitting device in the embodiment of the invention adopts an optical framework that the light splitting assembly is arranged behind the optical lens, and miniaturization and integration of the light splitting device are facilitated.

Description

Technical Field

[0001] The present application relates to the field of optical imaging technology, and in particular to a spectroscopic device and related products. Background Art

[0002] With the advancement of information technology and computer vision, detection technology has made rapid progress. A wide variety of detection devices have brought great convenience to people's lives and travel. Detection devices can be thought of as the "eyes" that perceive the environment. They include vision sensors such as cameras and radar sensors such as millimeter-wave radar, lidar, and ultrasonic radar. Among them, lidar (light detection and ranging) offers significant advantages in detection range, ranging accuracy, and reliability, and features near-24 / 7 operation. It is a key sensor in the perception field and plays a vital role in intelligent driving, intelligent transportation, surveying and mapping, and intelligent manufacturing. Cameras offer higher resolution and color perception capabilities, providing rich visual information and using image recognition technology to identify objects such as traffic signs, pedestrians, and vehicles.

[0003] Currently, in multi-sensor (including but not limited to lidar, cameras and other sensors) imaging scenarios, it is necessary to split and transmit the light from the object space. However, the current optical machine design function is relatively simple and cannot realize split and transmit in multi-sensor imaging scenarios.

[0004] Therefore, a feasible solution is urgently needed to realize spectroscopic transmission in multi-sensor imaging scenarios. Summary of the Invention

[0005] The embodiments of the present application provide a spectroscopic device and related products that can realize spectroscopic transmission in multi-sensor imaging scenarios.

[0006] In a first aspect, an embodiment of the present application provides a spectroscopic device, comprising: an optical mechanical support, and a spectroscopic assembly. The optical mechanical support includes a first accommodating cavity and a second accommodating cavity, arranged sequentially from the object side to the image side. The first accommodating cavity is used to house an optical lens, and the second accommodating cavity is used to house the spectroscopic assembly. The spectroscopic assembly is used to receive light from the optical lens and perform spectroscopic transmission of the light from the optical lens. At least one abutting side of the spectroscopic assembly abuts against the inner wall surface of the second accommodating cavity, and at least one bonding side of the spectroscopic assembly is bonded and fixed to the inner wall surface of the second accommodating cavity by an adhesive.

[0007] In an embodiment of the present application, a spectrometer device is provided, which adopts an optical architecture in which the spectrometer component is placed after the optical lens, and the position of the spectrometer component is controlled by abutting at least one abutting side of the spectrometer component with the inner wall surface of the second accommodating cavity, and the posture of the spectrometer component is fixed by bonding at least one bonding side of the spectrometer component with the inner wall surface of the second accommodating cavity, so that the spectrometer component can be fixed in the second accommodating cavity of the optical machine bracket, and the position and posture of the spectrometer component in the optical machine bracket can be controlled. Therefore, the spectrometer device in the embodiment of the present application can realize spectrometric transmission in a multi-sensor imaging scenario. In addition, the spectrometer device in the embodiment of the present application adopts an optical architecture in which the spectrometer component is placed after the optical lens, which is conducive to the miniaturization and integration of the spectrometer device.

[0008] Furthermore, optionally, the spectroscopic device in the embodiment of the present application can allow the laser radar and camera to share the optical lens and spectroscopic component in the spectroscopic device. The spectroscopic component splits the light from the optical lens and transmits it to the laser radar's photosensitive surface and the camera's photosensitive surface for imaging. This takes advantage of the spectroscopic device's ability to combine the laser radar's point cloud data and the camera's image data, thereby improving the accuracy of intelligent driving perception. Furthermore, the spectroscopic device in the embodiment of the present application adopts an optical architecture in which the spectroscopic component is placed after the optical lens, allowing the laser radar and camera to share the optical lens and spectroscopic component in the spectroscopic device, which is also conducive to the miniaturization and integration of the spectroscopic device.

[0009] In a possible embodiment, at least one abutting side of the above-mentioned spectrometer component abuts against the inner wall surface of the second accommodating cavity, which can be specifically achieved by including but not limited to the following methods: one side of the spectrometer component abuts against the inner wall surface of the second accommodating cavity close to the first accommodating cavity, and the other side of the spectrometer component abuts against the bottom surface of the second accommodating cavity.

[0010] In this embodiment, the inner wall surface of the second accommodating cavity close to the first accommodating cavity can be understood as a stop surface, and the bottom surface of the second accommodating cavity can be understood as a resting surface. By abutting one side of the spectrometer component against the stop surface and abutting the other side of the spectrometer component against the resting surface, the position of the spectrometer component can be controlled, thereby cooperating with the adhesive side of the spectrometer component to more effectively fix the position and posture of the spectrometer component.

[0011] In a possible implementation, the position where the adhesive is bonded to the beam splitter component is symmetrical with respect to the optical axis of the optical lens.

[0012] In this embodiment, the adhesive is bonded to the beam splitter assembly symmetrically about the optical axis of the optical lens, facilitating an athermal design for the optical system and ensuring optimal optical performance. Furthermore, this reduces stress in the beam splitter assembly from external forces, high and low temperatures, and enhances the reliability and stability of the beam splitter assembly's bonding, thereby improving the stability and reliability of the beam splitter assembly's light transmission to the optical lens.

[0013] In one possible embodiment, the inner wall surface of the second accommodating cavity includes a first side surface and a second side surface disposed opposite each other. A first accommodating groove is provided on the first side surface, abutting one side of the spectrometer assembly, and adhesive is provided within the first accommodating groove and bonded to the first side of the spectrometer assembly. A second accommodating groove is provided on the second side surface, abutting the other side of the spectrometer assembly, and adhesive is provided within the second accommodating groove and bonded to the other side of the spectrometer assembly.

[0014] In this embodiment, a first accommodating groove is provided on the first side of the second accommodating cavity, and a second accommodating groove is provided on the second side of the second accommodating cavity, and the first accommodating groove abuts against one side of the spectrometer component, and the second accommodating groove abuts against the other side of the spectrometer component. By filling adhesive into the first accommodating groove and the second accommodating groove, the spectrometer component can be bonded and fixed to the two side surfaces of the second accommodating cavity, thereby fixing the position and posture of the spectrometer component in the optical machine bracket.

[0015] In a possible implementation, the first receiving groove and the second receiving groove are symmetrical with respect to the optical axis of the optical lens.

[0016] In this embodiment, the first and second receiving grooves are symmetrical about the optical axis of the optical lens. Filling the first and second receiving grooves with adhesive allows the adhesive to adhere to the beam splitter assembly symmetrically about the optical axis of the optical lens, facilitating an athermal design for the optical system and ensuring optimal optical performance. Furthermore, this reduces stress on the beam splitter assembly from external forces, high and low temperatures, and enhances the reliability and stability of the beam splitter assembly's bonding, thereby improving the stability and reliability of the beam splitter assembly's light transmission to the optical lens.

[0017] In one possible embodiment, a first accommodating member is protruding from the first side surface, the first accommodating member and the first side surface together form a first accommodating groove, and a side of the first accommodating member away from the first side surface abuts one side of the light splitting assembly. A second accommodating member is protruding from the second side surface, the second accommodating member and the second side surface together form a second accommodating groove, and a side of the second accommodating member away from the second side surface abuts the other side of the light splitting assembly.

[0018] In this embodiment, a first accommodating member can be protruded on the first side surface of the second accommodating cavity, so that the protruding first accommodating member and the first side surface of the second accommodating cavity are combined to form a first accommodating groove, and a second accommodating member can be protruded on the second side surface opposite to the second accommodating cavity, so that the protruding second accommodating member and the second side surface of the second accommodating cavity are combined to form a second accommodating groove, so that the splitter component can be bonded and fixed to the two side surfaces of the second accommodating cavity by filling adhesive into the first accommodating groove and the second accommodating groove.

[0019] Optionally, the first accommodating member and the second accommodating member are symmetrical with respect to the optical axis of the optical lens.

[0020] In a possible embodiment, a first receiving groove is formed on the first side surface, and the first side surface abuts against one side of the light splitting component. A first receiving groove is formed on the second side surface, and the second side surface abuts against the other side of the light splitting component.

[0021] In this embodiment, a first accommodating groove can be formed by digging a groove on the first side of the second accommodating cavity, and a second accommodating groove can be formed by digging a groove on the second side opposite to the second accommodating cavity, so that the splitting component can be bonded and fixed to the two sides of the second accommodating cavity by filling adhesive into the first accommodating groove and the second accommodating groove.

[0022] In a possible implementation, the light splitting component includes a prism formed by splicing a first prism and a second prism, and a splicing surface of the first prism and the second prism forms a first angle with the optical axis of the optical lens.

[0023] In this embodiment, the spectroscopic component is coaxially arranged with the optical lens, and the splicing surface of the first prism and the second prism in the spectroscopic component forms a first angle with the optical axis of the optical lens, so that after the light from the optical lens is transmitted to the splicing surface of the first prism and the second prism in the spectroscopic component, a turning light path and a straight light path are formed, thereby achieving the purpose of spectroscopic transmission.

[0024] In a possible embodiment, the side of the first accommodating groove away from the first side abuts one side of the first prism and one side of the second prism, and the side of the second accommodating groove away from the second side abuts the other side of the first prism and the other side of the second prism.

[0025] In this embodiment, the side of the first receiving groove away from the first side abuts against one side of the first prism and one side of the second prism, so that the adhesive is filled into the first receiving groove, which can make the adhesive cover one side of the first prism and one side of the second prism. The side of the second receiving groove away from the second side abuts against the other side of the first prism and the other side of the second prism, so that the adhesive is filled into the second receiving groove, which can make the adhesive cover the other side of the first prism and the other side of the second prism. Through the bonding scheme of the embodiment of the present application, the two sides of the first prism in the spectrometer component can be bonded to the two side sides of the second accommodating cavity, and the two sides of the second prism in the spectrometer component can be bonded to the two side sides of the second accommodating cavity, thereby enhancing the reliability and stability of the bonding of the spectrometer component.

[0026] In one possible embodiment, the first receiving slot includes N first sub-receiving slots, which are sequentially spaced apart; the sides of the N first sub-receiving slots facing away from the first side abut against one side of the first prism and one side of the second prism, and adhesive is disposed within the N first sub-receiving slots and bonded to one side of the first prism and one side of the second prism. The second receiving slot includes N second sub-receiving slots, which are sequentially spaced apart; the sides of the N second sub-receiving slots facing away from the second side abut against the other side of the first prism and the other side of the second prism, and adhesive is disposed within the N second sub-receiving slots and bonded to the other side of the first prism and the other side of the second prism, where N is an integer greater than 1.

[0027] In this embodiment, the complete first receiving groove is divided into N first sub-receiving grooves arranged in sequence and spaced apart, and the side of the N first sub-receiving grooves away from the first side abuts against one side of the first prism and one side of the second prism, so that the adhesive is filled into the N first sub-receiving grooves, so that the adhesive can cover one side of the first prism and one side of the second prism. The complete second receiving groove is divided into N second sub-receiving grooves arranged in sequence and spaced apart, and the side of the N second sub-receiving grooves away from the second side abuts against the other side of the first prism and the other side of the second prism, so that the adhesive is filled into the N second sub-receiving grooves, so that the adhesive can cover the other side of the first prism and the other side of the second prism. Through the bonding scheme of the embodiment of the present application, the two sides of the first prism in the spectrometer component can be bonded to the two side sides of the second receiving cavity, and the two sides of the second prism in the spectrometer component can be bonded to the two side sides of the second receiving cavity, thereby enhancing the reliability and stability of the bonding of the spectrometer component. Moreover, by dividing the complete receiving groove into N sub-receiving grooves arranged in sequence, the stress influence of the spectrometer under external force, high and low temperature conditions can be reduced, thereby improving the stability and reliability of the spectrometer transmission of the optical lens to the optical spectrometer.

[0028] In one possible embodiment, the first prism is located near the first accommodating cavity, and the second prism is located away from the first accommodating cavity. A side of the first accommodating groove away from the first side abuts one side of the second prism, and a side of the second accommodating groove away from the second side abuts another side of the second prism. An adhesive is provided on the top of the first prism.

[0029] In this embodiment, the side of the first receiving groove away from the first side abuts against the side of the second prism, so that the adhesive is filled into the first receiving groove so that the adhesive covers one side of the second prism. The side of the second receiving groove away from the second side abuts against the other side of the second prism, so that the adhesive is filled into the second receiving groove so that the adhesive covers the other side of the second prism. Since the two sides of the first prism are not covered by the adhesive, it cannot be bonded and fixed to the two side surfaces of the second receiving cavity. However, the first prism is close to the first receiving cavity and abuts against the inner wall surface (which can be understood as the stop surface) of the second receiving cavity close to the first receiving cavity, which can play a certain degree of fixing role. Therefore, the first prism can be fixedly bonded to the top surface of the second receiving cavity by arranging an adhesive on the top of the first prism. Through the bonding scheme of the embodiment of the present application, the two sides of the second prism in the spectroscopic component can be bonded to the two side surfaces of the second receiving cavity, and the top of the first prism in the spectroscopic component can be bonded to the top surface of the second receiving cavity, thereby enhancing the reliability and stability of the bonding of the spectroscopic component. Moreover, the adhesive used in the bonding scheme in the embodiment of the present application does not cover the joint surface between the first prism and the second prism, which can reduce the stress influence of the spectrometer component under external forces, high and low temperatures, etc., thereby improving the stability and reliability of the spectrometer component in transmitting light spectrometry to the optical lens.

[0030] In one possible embodiment, the inner wall of the second accommodating cavity includes a top surface and a bottom surface that are oppositely disposed, wherein the top of the light splitting component is bonded to the top surface by an adhesive, and / or the bottom of the light splitting component is bonded to the bottom surface by an adhesive.

[0031] In this embodiment, the top of the spectrometer component can be bonded and fixed to the top surface of the second accommodating cavity by setting an adhesive on the top of the spectrometer component, and the bottom of the spectrometer component can be bonded and fixed to the bottom surface of the second accommodating cavity by setting an adhesive on the bottom surface of the second accommodating cavity. Through the bonding scheme of the embodiment of the present application, the top and / or bottom of the spectrometer component can be bonded to the inner wall surface of the second accommodating cavity, thereby enhancing the reliability and stability of the bonding of the spectrometer component. In addition, the adhesive used in the bonding scheme in the embodiment of the present application does not cover the splicing surface between the first prism and the second prism in the spectrometer component, which can reduce the stress influence of the spectrometer component under external force, high and low temperature, etc., thereby improving the stability and reliability of the spectrometer component in the light splitting transmission of the optical lens.

[0032] In one possible embodiment, the inner wall of the second accommodating cavity includes a top surface and a bottom surface disposed opposite each other. The bottom surface is provided with a first groove, and an adhesive is disposed in the first groove and bonded to the bottom of the spectrometer component, and / or the top of the spectrometer component is bonded to the top surface via an adhesive.

[0033] In this embodiment, the top of the spectrometer component can be bonded and fixed to the top surface of the second accommodating cavity by setting an adhesive on the top of the spectrometer component, or a first groove can be set on the bottom surface of the second accommodating cavity, and the bottom of the spectrometer component can be bonded and fixed to the bottom surface of the second accommodating cavity by setting an adhesive in the first groove. Through the bonding scheme of the embodiment of the present application, the top and / or bottom of the spectrometer component can be bonded to the inner wall surface of the second accommodating cavity, thereby enhancing the reliability and stability of the bonding of the spectrometer component. In addition, the adhesive used in the bonding scheme in the embodiment of the present application does not cover the splicing surface between the first prism and the second prism in the spectrometer component, which can reduce the stress influence of the spectrometer component under external force, high and low temperature, etc., thereby improving the stability and reliability of the spectrometer component in the light splitting transmission of the optical lens.

[0034] In one possible embodiment, the optical machine bracket further includes a body, a first cover plate, and a second cover plate. The second accommodating cavity is disposed within the body, and the body is provided with a first opening and a second opening, both of which are connected to the second accommodating cavity. The first opening is located at the top of the second accommodating cavity, and the second opening is located on a side of the second accommodating cavity away from the first accommodating cavity. The first cover plate is sealed and secured to the body via a first sealing member, and the first cover plate closes the first opening. The second cover plate is sealed and secured to the body via a second sealing member, and the second cover plate closes the second opening.

[0035] In this embodiment, the first cover plate is sealed and fixed to the first opening of the optical machine bracket body by a first sealing member, and the second cover plate is sealed and fixed to the second opening of the optical machine bracket body by a second sealing member, thereby ensuring the sealing of the second accommodating cavity, thereby ensuring the stability and reliability of the light splitting transmission of the optical lens by the spectrometer component placed in the second accommodating cavity, thereby achieving high-quality imaging.

[0036] Optionally, the first seal and / or the second seal may be an adhesive, and the sealing and fixation between the cover plate and the opening may be achieved by arranging the adhesive at intervals between the cover plate and the opening, or arranging the adhesive in a whole circle, etc., and this embodiment of the present application does not impose any restrictions on this.

[0037] In one possible embodiment, the spectroscopic device further includes an optical lens. A first stepped surface is provided on the exterior of the optical lens, the first accommodating cavity of the optical mechanical support is sleeved on the optical lens, one end of the optical mechanical support is spaced from the first stepped surface and opposed to it, and a third sealing member is provided between the one end of the optical mechanical support and the first stepped surface.

[0038] In this embodiment, one end of the optical machine bracket is sealed and fixed to the first step surface by a third sealing member, which can ensure the sealing of the first accommodating cavity, thereby ensuring the stability and reliability of light transmission of the optical lens placed in the first accommodating cavity, thereby achieving high-quality imaging.

[0039] Optionally, the third sealing member may be an adhesive, and the sealing and fixation between one end of the optical machine bracket and the first step surface may be achieved by arranging the adhesive at intervals between one end of the optical machine bracket and the first step surface, or arranging the adhesive in a whole circle. The embodiment of the present application does not impose any restrictions on this.

[0040] In a possible implementation, a second step surface is provided inside the optical lens, one end of the optical element in the optical lens is spaced apart from the second step surface and arranged opposite to each other, and a fourth seal is provided between the one end of the optical element and the second step surface.

[0041] In this embodiment, one end of the optical element in the optical lens is sealed and fixed to the second step surface by the fourth seal, which can ensure the sealing inside the optical lens, thereby ensuring the stability and reliability of light transmission of the optical element placed in the optical lens, thereby achieving high-quality imaging.

[0042] Optionally, the fourth sealing member may be an adhesive, and sealing and fixing between one end of the optical element in the optical lens and the second step surface may be achieved by arranging the adhesive at intervals between the one end of the optical element in the optical lens and the second step surface, or arranging the adhesive in a whole circle. This embodiment of the present application does not impose any restrictions on this.

[0043] In a possible embodiment, the optical lens includes a first section and a second section, the first section and the second section are connected by a connecting portion, the outer diameter of the second section is larger than the outer diameter of the first section, and the first step surface and the second step surface are located on opposite sides of the connecting portion.

[0044] In this embodiment, by designing the first step surface and the second step surface on opposite sides of the connecting portion, the sealing, reliability and stability of the connecting structure between the optical lens and the optical machine bracket can be improved, and the sealing, reliability and stability of the connecting structure between the optical lens and the optical element in the optical lens can be improved.

[0045] In a possible implementation, a photosensitive surface of the first sensor is disposed on an inner side of the first cover plate, and a photosensitive surface of the second sensor is disposed on an inner side of the second cover plate.

[0046] In this embodiment, since the defocus amount of the turning light path of the spectroscopic component is greatly affected by the movement of the spectroscopic component, a first sensor (infrared light sensor) with a larger depth of field (DOF) can be set on the turning light path of the spectroscopic component, and the defocus amount of the straight light path of the spectroscopic component is less affected by the movement of the spectroscopic component, so a second sensor (visible light sensor) with a smaller DOF can be set on the straight light path of the spectroscopic component, thereby achieving high-quality imaging of the first sensor and the second sensor.

[0047] In a possible implementation, the first sensor includes an infrared light sensor, and the second sensor includes a visible light sensor.

[0048] In this embodiment, the first sensor includes an infrared light sensor, such as a lidar, and the second sensor includes a visible light sensor, such as a camera. This embodiment combines the advantages of lidar point cloud data and camera image data to improve the accuracy of intelligent driving perception.

[0049] In a second aspect, an embodiment of the present application provides a sensing device, the sensing device comprising at least one spectroscopic device as described in the first aspect. Further, the sensing device comprises a housing, and the spectroscopic device is housed in the housing.

[0050] Optionally, the sensing device includes a sensor that uses light to sense the environment, such as one or more of a laser radar, a camera, or a fusion sensing device. The fusion sensing device includes multiple types of sensors such as a laser radar, a camera, and a radar.

[0051] In a third aspect, an embodiment of the present application provides a terminal comprising at least one optical splitting device as described in the first aspect, or at least one sensing device as described in the second aspect.

[0052] Optionally, the terminal may be a means of transportation, such as a car, truck, aircraft, drone, slow transport vehicle, spacecraft, or ship, etc., which may be used in any possible scenario, and the embodiments of the present application do not impose any restrictions on this.

[0053] Optionally, the terminal is a vehicle, a drone or a robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0055] Figure 1A A schematic diagram of an application scenario of a radar provided in an embodiment of the present application;

[0056] Figure 1B A schematic diagram of an application scenario of a radar provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the architecture of a radar provided in an embodiment of the present application;

[0058] Figure 3A schematic diagram of a light splitting architecture provided in an embodiment of the present application;

[0059] Figure 4 A schematic structural diagram of a spectrometer provided in an embodiment of the present application;

[0060] Figure 5 A schematic structural diagram of a light splitting component provided in an embodiment of the present application;

[0061] Figure 6 A schematic cross-sectional view of a spectrometer provided in an embodiment of the present application;

[0062] Figure 7A A three-dimensional schematic diagram of a bonding solution 1 provided in an embodiment of the present application;

[0063] Figure 7B A cross-sectional schematic diagram of a bonding solution 1 provided in an embodiment of the present application;

[0064] Figure 8A A three-dimensional schematic diagram of a second bonding solution provided in an embodiment of the present application;

[0065] Figure 8B A cross-sectional schematic diagram of a second bonding solution provided in an embodiment of the present application;

[0066] Figure 9A A three-dimensional schematic diagram of a bonding solution three (A) provided in an embodiment of the present application;

[0067] Figure 9B A cross-sectional schematic diagram of a bonding solution 3 (A) provided in an embodiment of the present application;

[0068] Figure 9C A cross-sectional schematic diagram of another bonding solution 3 (A) provided in an embodiment of the present application;

[0069] Figure 10A A three-dimensional schematic diagram of a bonding solution 3 (B) provided in an embodiment of the present application;

[0070] Figure 10B A cross-sectional schematic diagram of a bonding solution 3 (B) provided in an embodiment of the present application;

[0071] Figure 10C A cross-sectional schematic diagram of another bonding solution 3 (B) provided in an embodiment of the present application;

[0072] Figure 11A A three-dimensional schematic diagram of a bonding solution three (C) provided in an embodiment of the present application;

[0073] Figure 11B A cross-sectional schematic diagram of a bonding solution three (C) provided in an embodiment of the present application;

[0074] Figure 11C A cross-sectional schematic diagram of another bonding solution three (C) provided in an embodiment of the present application;

[0075] Figure 12 A schematic diagram of a sealing member provided in an embodiment of the present application;

[0076] Figure 13 A schematic diagram of a sensing device provided in an embodiment of the present application;

[0077] Figure 14 A schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solutions and advantages of this application clearer, the embodiments of this application will be described below in conjunction with the drawings in the embodiments of this application.

[0079] The terms "first" and "second" in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0080] The “embodiment” mentioned herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that in the various embodiments of the present application, unless otherwise specified and there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0081] It should be understood that in the present application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0082] In order to more clearly describe the solution of this application, some possible application scenarios of lidar are introduced below.

[0083] See also Figure 1A and Figure 1B , Figure 1A and Figure 1B Schematic diagram of application scenarios of the radar provided in an embodiment of the present application.

[0084] like Figure 1A and Figure 1B As shown, this exemplary application scenario takes the laser radar installed on a vehicle as an example.

[0085] Vehicles can be, for example, autonomous vehicles, smart vehicles, electric vehicles, or digital vehicles. LiDAR can be deployed at various locations on the vehicle (see Figure 1B For example, LiDAR can be deployed in any one or more of the four directions of the vehicle, namely, front, rear, left, and right, to capture information about the vehicle's surroundings. Figure 1A For example, the laser radar is deployed in front of the vehicle. The laser radar can sense Figure 1A The fan-shaped area shown in the dotted box can be called the detection area of the laser radar (or the field of view of the laser radar).

[0086] In one possible implementation, a lidar can acquire the vehicle's latitude and longitude, speed, and orientation, or related information (e.g., target distance, target speed, target pose, or grayscale image) of targets within a certain range (e.g., other nearby vehicles) in real time or periodically. The lidar or the vehicle can determine the vehicle's position and / or plan a path based on this information. For example, the vehicle's longitude and latitude can be used to determine the vehicle's location, its speed and orientation can be used to determine its future travel direction and destination, or the distances to surrounding objects can be used to determine the number and density of obstacles around the vehicle. Furthermore, it can optionally be combined with advanced driving assistance systems (ADAS) to enable assisted or autonomous driving. It should be understood that the principle by which lidar detects target related information is that the lidar emits detection light in a certain direction. If a target is within the lidar's detection area, the target reflects the received detection light back to the lidar (the reflected detection light is referred to as an echo signal). The lidar then determines the target's related information based on the echo signal.

[0087] It should be noted that the above application scenarios are merely examples. The laser radar provided in this application (including the optical waveguide assembly provided in this application) can also be applied in a variety of other possible scenarios, not limited to the scenarios exemplified above. For example, the laser radar can also be installed on a drone as an airborne radar. For another example, the laser radar can also be installed on a roadside unit (RSU) as a roadside traffic laser radar, enabling intelligent vehicle-road collaborative communication. For another example, the laser radar can be installed on an automated guided vehicle (AGV), where an AGV is a transport vehicle equipped with an electromagnetic or optical automatic navigation device that can travel along a specified navigation path and has safety protection and various transfer functions. A full list of these is omitted here. It should be understood that the application scenarios described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation of the technical solutions provided in this application. Persons skilled in the art will recognize that as new application scenarios emerge, the technical solutions provided in this application will also be applicable to similar technical problems.

[0088] Based on the above content, the above application scenarios can be applied to unmanned driving, automatic driving, assisted driving, intelligent driving, connected vehicles, security detection, remote interaction, surveying and mapping or artificial intelligence and other fields.

[0089] The following combination Figure 2 , introduce some related concepts of lidar.

[0090] Laser radar, also known as optical radar, is the abbreviation of light detection and ranging system, and can also be called Laser Radar or LADAR (laser detection and ranging).

[0091] LiDAR uses light as a detection medium, utilizing the emission and reception of lasers to detect targets, for example, to measure distance, velocity, or azimuth. LiDAR can measure distance to a target based on the laser's time of flight, which is the time difference between the laser's transmission and reception. Alternatively, it can measure distance to a target based on the phase difference between the transmitted laser signal and the received echo of the same laser signal. LiDAR's greatest advantage lies in its ability to create clear three-dimensional (3D) images of targets using Doppler imaging technology. LiDAR uses the emission and reception of lasers to collect information such as the 3D coordinates, reflectivity, and texture of a large number of densely packed points on the target's surface. Based on this collected information, LiDAR creates a 3D model of the target, builds a 3D point cloud, and creates an environmental map to achieve environmental awareness. Compared with traditional passive imaging technologies such as visible light and infrared, lidar imaging technology has subverted the traditional two-dimensional projection imaging mode. It can collect depth information of the target surface and obtain relatively complete spatial information of the target. After data processing, it reconstructs the three-dimensional surface of the target to obtain a three-dimensional graphic that better reflects the geometric shape of the target. At the same time, it can also obtain rich feature information such as the reflection characteristics and movement speed of the target surface, providing sufficient information support for data processing such as target detection, identification, and tracking, and reducing the difficulty of the algorithm.

[0092] See also Figure 2 , Figure 2 A schematic diagram of the architecture of a radar provided in an embodiment of the present application.

[0093] like Figure 2 As shown, the laser radar mainly includes a laser emitting part (or system) 100, a laser receiving part (or system) 200 and a signal processing part (or system) 300.

[0094] Among them, the laser emitting part 100 includes an excitation source (or laser driver), a laser, and an emitting optical system. The excitation source drives the laser to emit a laser beam (or laser pulse), and the laser beam (or laser pulse) is emitted outward through the emitting optical system. The laser receiving part 200 includes a receiving optical system and a detector. When the laser beam emitted from the laser radar encounters the target object, it interacts with the target object to form a reflected / scattered echo beam. The echo beam is collected by the receiving optical system and received by the detector. The optical signal is converted into an electrical signal, and the electrical signal is passed to the signal processing part 300 after being processed by the analog front end. The signal processing part 300 processes the received signal to obtain information such as the distance, speed, azimuth, etc. of the target object. In addition, information such as the surface morphology and physical properties of the target can be obtained to establish an object model. The detector is typically a photodetector, which converts the received light signal into an electrical signal. This electrical signal is typically an analog signal. The signal processing unit 300 is typically used to process digital signals, such as a digital signal processor (DSP). Therefore, the analog electrical signal is converted into a digital signal via an analog-to-digital converter (ADC) and provided to the signal processing unit 300. The electrical signal can also be amplified and then converted into a digital signal via an analog-to-digital converter before being provided to the signal processing unit 300. The signal processing unit 300 includes signal processing circuitry for processing the digital signal to obtain information such as the distance, speed, and azimuth of the target object and further establish an object model. The lidar also includes control circuitry, such as a control unit for controlling the excitation source and a control unit for controlling the scan drive circuit. These two control units can be integrated or independent. Furthermore, the signal processing circuit and the control circuit can be integrated or independent.

[0095] In addition, in one implementation, the laser emitting part 100 may also include a laser modulator and a beam controller. The laser beam emitted by the laser passes through the beam controller. Under the control of the laser modulator, the beam controller controls the direction and number of lines of the emitted laser beam. The laser beam emitted from the beam controller passes through the emitting optical system and is emitted outward.

[0096] The laser radar system may also include a scanning unit (or system) 400. The laser beam emitted by the laser is scanned across a plane by the scanning unit 400 to generate real-time planar image information. The scanning unit 400 primarily comprises a scanning mechanism and a scanning drive circuit. The scanning drive circuit is used to drive the scanning mechanism, which transforms the laser beam from a "line" to a "plane" under the action of the scanning mechanism.

[0097] As mentioned in the background technology section, there is an urgent need for a feasible solution to achieve spectroscopic transmission in multi-sensor imaging scenarios.

[0098] See also Figure 3 , Figure 3 A schematic diagram of a light splitting architecture provided in an embodiment of the present application.

[0099] like Figure 3 As shown, the spectroscopic architecture includes but is not limited to: a light source, a transmitting lens, a spectroscopic prism, a first receiving lens, a first sensor, a second receiving lens, and a second sensor.

[0100] Among them, the infrared signal light emitted by the light source is collimated and uniformed by the transmitting lens and then emitted into the object space. The signal light and ambient light (visible light) from the object space are incident on the beam splitter (BS) and divided into a transmission path and a turning path. The ambient light is transmitted and then converged by the second receiving lens to the photosensitive surface of the second sensor (such as a camera); the signal light is reflected by the BS and then converged by the first receiving lens to the photosensitive surface of the first sensor (such as Lidar).

[0101] The design of the spectroscopic architecture with the spectroscopic prism placed in front of the receiving lens is relatively easy, and the size of the dual lenses of the first receiving lens and the second receiving lens can be made smaller. However, on the one hand, since the transmitting lens must ensure sufficient emission efficiency, the transmitting lens has a large aperture. Therefore, the height of the entire machine is limited by the aperture of the transmitting lens. On the other hand, since the first sensor (such as Lidar) and the second sensor (such as a camera) do not share a receiving lens, there may be distortion mismatch between the different FOVs of the two. At the same time, the distortion mismatch of the two receiving lenses at high and low temperatures will also lead to an increase in the pixel-level alignment deviation of the first sensor (such as Lidar) and the second sensor (such as a camera), which in turn leads to lower intelligent driving perception accuracy.

[0102] In view of this, the embodiments of the present application provide a spectroscopic device and related products, which are applied to the field of optical imaging technology, such as optical imaging of lidar and cameras, and can realize spectroscopic transmission in multi-sensor imaging scenarios.

[0103] The spectrometer and related products provided in this application will be described below with reference to the accompanying drawings.

[0104] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of a spectrometer provided in an embodiment of the present application. The spectrometer is used in the field of optical imaging technology, such as laser radar and camera optical imaging.

[0105] like Figure 4 As shown, the light splitting device 40 includes:

[0106] Optical machine bracket 401, spectrometer component 402.

[0107] The optical engine bracket 401 includes a first accommodating cavity 4011 and a second accommodating cavity 4012, which are arranged in sequence from the object side to the image side. The first accommodating cavity 4011 is used to accommodate the optical lens, and the second accommodating cavity 4012 is used to accommodate the spectrometer 402. The spectrometer 402 is used to receive light from the optical lens and split the light for transmission.

[0108] At least one abutting side of the light splitting component 402 abuts against the inner wall surface of the second accommodating cavity 4012 , and at least one bonding side of the light splitting component 402 is bonded and fixed to the inner wall surface of the second accommodating cavity 4012 by adhesive.

[0109] It can be understood that the spectrometer device 40 in the embodiment of the present application adopts an optical architecture in which the spectrometer component 402 is placed behind the optical lens, and at least one abutting side of the spectrometer component 402 is abutted against the inner wall surface of the second accommodating cavity 4012 to control the position of the spectrometer component 402, and at least one bonding side of the spectrometer component 402 is bonded to the inner wall surface of the second accommodating cavity 4012 to fix the posture of the spectrometer component 402, so that the spectrometer component 402 can be fixed in the second accommodating cavity 4012 of the optical machine bracket 401, and the position and posture of the spectrometer component 402 in the optical machine bracket 401 can be controlled.

[0110] The optical splitter 40 in the embodiment of the present application can realize optical splitting transmission in a multi-sensor imaging scenario. In addition, the optical splitter 40 in the embodiment of the present application adopts an optical architecture in which the optical splitter component 402 is placed after the optical lens, which is conducive to the miniaturization and integration of the optical splitter 40.

[0111] Furthermore, optionally, through the spectroscopic device 40 in the embodiment of the present application, the laser radar and the camera can share the optical lens and the spectroscopic component 402 in the spectroscopic device 40. The spectroscopic component 402 transmits the light from the optical lens to the photosensitive surface of the laser radar and the photosensitive surface of the camera for imaging, thereby utilizing the advantages of the spectroscopic device 40 in combining the point cloud data of the laser radar and the image data of the camera to improve the perception accuracy of intelligent driving.

[0112] In addition, the spectroscopic device 40 in the embodiment of the present application adopts an optical architecture in which the spectroscopic component 402 is placed behind the optical lens, so that the laser radar and the camera share the optical lens and the spectroscopic component 402 in the spectroscopic device 40, which is also conducive to the miniaturization and integration of the spectroscopic device 40.

[0113] Optionally, the light splitting component 402 includes a prism formed by splicing a first prism and a second prism, and a splicing surface of the first prism and the second prism forms a first angle with the optical axis of the optical lens.

[0114] Optionally, see Figure 5 , Figure 5A schematic structural diagram of a light splitting component provided in an embodiment of the present application.

[0115] like Figure 5 As shown, the light splitting component 402 includes a prism formed by splicing a first prism 4021 and a second prism 4022 , and a splicing surface of the first prism 4021 and the second prism 4022 forms a first angle with the optical axis of the optical lens.

[0116] Optionally, the first angle is greater than 0° and less than 90°.

[0117] Optionally, see Figure 6 , Figure 6 This is a cross-sectional diagram of a spectrometer provided in an embodiment of the present application. It is understood that, Figure 6 The cross-sectional view shown can be regarded as the above Figure 4 A cross-sectional view of the spectrometer shown.

[0118] like Figure 6 As shown, the spectroscopic component 402 is coaxially arranged with the optical lens, and the splicing surface of the first prism 4021 and the second prism 4022 in the spectroscopic component 402 forms a first angle with the optical axis of the optical lens, so that after the light from the optical lens is transmitted to the splicing surface of the first prism 4021 and the second prism 4022 in the spectroscopic component 402, a turning light path and a straight light path are formed, thereby achieving the purpose of spectroscopic transmission.

[0119] In a possible embodiment, at least one abutting side of the light splitting component 402 abuts against the inner wall surface of the second accommodating cavity 4012, which can be achieved by including but not limited to the following methods:

[0120] One side of the light splitting component abuts against the inner wall surface of the second accommodating cavity close to the first accommodating cavity, and the other side of the light splitting component abuts against the bottom surface of the second accommodating cavity.

[0121] Alternatively, as Figure 6 As shown, one side 402a of the light splitting component 402 abuts against the inner wall surface 4012e of the second accommodating cavity 4012 close to the first accommodating cavity 4011 , and the other side 402b of the light splitting component 402 abuts against the bottom surface 4012f of the second accommodating cavity 4012 .

[0122] It can be understood that the inner wall surface 4012e of the second accommodating cavity 4012 close to the first accommodating cavity 4011 can be understood as a stop surface, and the bottom surface 4012f of the second accommodating cavity 4012 can be understood as a support surface. By abutting one side 402a of the spectrometer component 402 against the stop surface and abutting the other side 402b of the spectrometer component 402 against the support surface, the position of the spectrometer component 402 can be controlled, so that the position and posture of the spectrometer component 402 can be more effectively fixed in cooperation with the adhesive side of the spectrometer component 402.

[0123] In a possible embodiment, the position where the adhesive is bonded to the light splitting component 402 is symmetrical with respect to the optical axis of the optical lens.

[0124] As will be appreciated, the adhesive bonded to beam splitter assembly 402 is symmetrical about the optical axis of the optical lens, facilitating an athermal design for the optical system and ensuring optimal optical performance. Furthermore, this reduces stress on beam splitter assembly 402 from external forces, high and low temperatures, and other conditions, enhancing the reliability and stability of the bonding of beam splitter assembly 402, thereby improving the stability and reliability of the light splitting transmission from beam splitter assembly 402 to the optical lens.

[0125] In a possible embodiment, several different bonding solutions can be provided for bonding and fixing the light splitting component 402 in the second accommodating cavity 4012 , which will be described below with reference to the accompanying drawings.

[0126] Bonding solution 1:

[0127] The inner wall surface of the second accommodating cavity 4012 includes a top surface and a bottom surface that are oppositely arranged.

[0128] The top of the light splitting component 402 is bonded and fixed to the top surface by an adhesive, and / or the bottom of the light splitting component 402 is bonded and fixed to the bottom surface by an adhesive.

[0129] Optionally, see Figure 7A and Figure 7B , Figure 7A This is a three-dimensional schematic diagram of a bonding solution 1 provided in an embodiment of the present application. Figure 7B This is a cross-sectional diagram of a bonding solution 1 provided in an embodiment of the present application. It can be understood that, Figure 7B The cross-section shown can be considered as Figure 7A The stereogram shown is a cross-sectional view perpendicular to the direction from the object side to the image side.

[0130] like Figure 7A and Figure 7B As shown, the inner wall of the second accommodating cavity 4012 includes a top surface 4012a and a bottom surface 4012b disposed opposite each other. The top 402a of the light splitting component 402 is bonded to the top surface 4012a by an adhesive, and / or the bottom 402b of the light splitting component 402 is bonded to the bottom surface 4012b by an adhesive.

[0131] It can be understood that the top 402a of the spectrometer component 402 can be bonded and fixed to the top surface 4012a of the second accommodating cavity 4012 by setting an adhesive on the top 402a of the spectrometer component 402, or the bottom 402b of the spectrometer component 402 can be bonded and fixed to the bottom surface 4012b of the second accommodating cavity 4012 by setting an adhesive on the bottom surface 4012b of the second accommodating cavity 4012.

[0132] Through this bonding solution 1, the top 402a and / or bottom 402b of the spectrometer component 402 can be bonded to the inner wall surface (4012a and / or 4012b) of the second accommodating cavity 4012, thereby enhancing the reliability and stability of the bonding of the spectrometer component 402.

[0133] Moreover, the adhesive used in the first bonding scheme does not cover the joint surface between the first prism 4021 and the second prism 4022 in the spectrometer component 402, which can reduce the stress influence of the spectrometer component 402 under external forces, high and low temperatures, etc., thereby improving the stability and reliability of the spectrometer component 402 in transmitting light to the optical lens.

[0134] Bonding solution 2:

[0135] The inner wall surface of the second accommodating cavity 4012 includes a top surface and a bottom surface that are oppositely arranged.

[0136] The bottom surface is provided with a first groove, the adhesive is provided in the first groove and bonded to the bottom of the light splitting component 402, and / or the top of the light splitting component 402 is bonded to the top surface by the adhesive.

[0137] Optionally, see Figure 8A and Figure 8B , Figure 8A This is a three-dimensional schematic diagram of a second bonding solution provided in an embodiment of the present application. Figure 8B This is a cross-sectional diagram of a bonding solution 2 provided in an embodiment of the present application. It can be understood that, Figure 8B The cross-section shown can be considered as Figure 8A The stereogram shown is a cross-sectional view perpendicular to the direction from the object side to the image side.

[0138] like Figure 8A and Figure 8B As shown, the inner wall of the second accommodating cavity 4012 includes a top surface 4012a and a bottom surface 4012b disposed opposite each other. The bottom surface 4012b is provided with a first groove A. An adhesive is disposed in the first groove A and is bonded and fixed to the bottom 402b of the light-splitting component 402. Alternatively, the top 402a of the light-splitting component 402 is bonded and fixed to the top surface 4012a via the adhesive.

[0139] It can be understood that the top 402a of the spectrometer component 402 can be bonded and fixed to the top surface 4012a of the second accommodating cavity 4012 by setting an adhesive on the top 402a of the spectrometer component 402, or a first groove A can be set on the bottom surface 4012b of the second accommodating cavity 4012, and the bottom 402b of the spectrometer component 402 can be bonded and fixed to the bottom surface 4012b of the second accommodating cavity 4012 by setting an adhesive in the first groove A.

[0140] Through this bonding solution 2, the top 402a and / or bottom 402b of the spectrometer component 402 can be bonded to the inner wall surface (4012a and / or 4012b) of the second accommodating cavity 4012, thereby enhancing the reliability and stability of the bonding of the spectrometer component 402.

[0141] Moreover, the adhesive used in the second bonding scheme does not cover the joint surface between the first prism 4021 and the second prism 4022 in the spectrometer component 402, which can reduce the stress influence of the spectrometer component 402 under external forces, high and low temperatures, etc., thereby improving the stability and reliability of the spectrometer component 402 in the light spectrometer transmission of the optical lens.

[0142] Bonding solution three:

[0143] The inner wall surface of the second accommodating cavity 4012 includes a first side surface and a second side surface that are opposite to each other.

[0144] A first receiving groove is provided on the first side surface, the first receiving groove abuts against one side of the light splitting component 402 , and an adhesive is provided in the first receiving groove and is bonded and fixed to one side of the light splitting component 402 .

[0145] A second receiving groove is provided on the second side surface. The second receiving groove abuts against the other side of the light splitting component 402 . An adhesive is provided in the second receiving groove and is bonded and fixed to the other side of the light splitting component 402 .

[0146] It can be understood that a first accommodating groove is set on the first side of the second accommodating cavity, and a second accommodating groove is set on the second side of the second accommodating cavity, and the first accommodating groove is abutted against one side of the spectrometer component 402, and the second accommodating groove is abutted against the other side of the spectrometer component 402. By filling adhesive into the first accommodating groove and the second accommodating groove, the spectrometer component 402 can be bonded and fixed to the two side surfaces of the second accommodating cavity, thereby achieving the fixation of the position and posture of the spectrometer component 402 in the optical machine bracket 401.

[0147] Optionally, the first accommodating groove and the second accommodating groove are symmetrical about the optical axis of the optical lens.

[0148] It is understood that the first and second receiving grooves are symmetrical about the optical axis of the optical lens. Filling the first and second receiving grooves with adhesive allows the adhesive to adhere to the beam splitter assembly 402 at positions symmetrical about the optical axis of the optical lens. This facilitates the athermal design of the optical system and ensures optimal optical performance. Furthermore, this reduces the stresses in the beam splitter assembly 402 caused by external forces, high and low temperatures, and other factors, enhancing the reliability and stability of the bonding of the beam splitter assembly 402, thereby improving the stability and reliability of the light splitting transmission from the beam splitter assembly 402 to the optical lens.

[0149] Optionally, a first receiving groove is provided on the first side surface, and a second receiving groove is provided on the second side surface, which can be implemented in the following ways including but not limited to:

[0150] Method 1:

[0151] A first accommodating member is protruded from the first side surface. The first accommodating member and the first side surface are combined to form a first accommodating groove. A side of the first accommodating member away from the first side surface abuts against a side of the light splitting component 402 .

[0152] A second accommodating member is protruded from the second side surface. The second accommodating member and the second side surface are combined to form a second accommodating groove. A side of the second accommodating member away from the second side surface abuts against the other side of the light splitting component 402 .

[0153] Optionally, the first accommodating member and the second accommodating member are symmetrical with respect to the optical axis of the optical lens.

[0154] It can be understood that a first accommodating member can be protruded on the first side of the second accommodating cavity 4012, so that the protruding first accommodating member and the first side of the second accommodating cavity 4012 are combined to form a first accommodating groove, and a second accommodating member can be protruded on the second side opposite to the second accommodating cavity 4012, so that the protruding second accommodating member and the second side of the second accommodating cavity 4012 are combined to form a second accommodating groove, so that the splitting component 402 can be bonded and fixed to the two sides of the second accommodating cavity 4012 by filling adhesive into the first accommodating groove and the second accommodating groove.

[0155] Method 2:

[0156] A first receiving groove is formed on the first side surface, and the first side surface abuts against one side of the light splitting component 402 .

[0157] A first receiving groove is formed on the second side surface, and the second side surface abuts against the other side of the light splitting component 402 .

[0158] It can be understood that a first accommodating groove can be formed by digging a groove on the first side of the second accommodating cavity, and a second accommodating groove can be formed by digging a groove on the second side opposite to the second accommodating cavity 4012, so that the splitting component 402 can be bonded and fixed to the two sides of the second accommodating cavity 4012 by filling adhesive into the first accommodating groove and the second accommodating groove.

[0159] It should be understood that the above-mentioned methods 1 and 2 are merely two possible methods, which are illustrative of setting the first receiving groove on the first side and setting the second receiving groove on the second side, and should not constitute a limitation on the embodiments of the present application.

[0160] It should be understood that new embodiments obtained based on reasonable variations, supplements or combinations of the above-mentioned methods 1 and 2 all fall within the protection scope of the embodiments of the present application.

[0161] Furthermore, optionally, for the above bonding solution three, several different specific implementation solutions can be provided, which will be described below in conjunction with the accompanying drawings.

[0162] Bonding solution three (A):

[0163] Optionally, see Figure 9A 、 Figure 9B and Figure 9C , Figure 9A This is a three-dimensional schematic diagram of a bonding solution three (A) provided in an embodiment of the present application. Figure 9B A cross-sectional schematic diagram of a bonding solution 3 (A) provided in an embodiment of the present application, Figure 9C This is a cross-sectional diagram of another bonding solution 3 (A) provided in the embodiment of the present application. It can be understood that, Figure 9B 、 Figure 9C The cross-section shown can be considered as Figure 9A The stereogram shown is a cross-sectional view perpendicular to the direction from the object side to the image side.

[0164] like Figure 9A 、 Figure 9B 、 Figure 9C As shown, the inner wall surface of the second accommodating cavity 4012 includes a first side surface 4012c and a second side surface 4012d that are arranged opposite to each other.

[0165] A first receiving groove B is provided on the first side surface 4012 c , and the first receiving groove B abuts against a side 402 c of the light splitting component 402 . Adhesive is provided in the first receiving groove B and is bonded and fixed to the side 402 c of the light splitting component 402 .

[0166] A second receiving groove C is provided on the second side surface 4012 d . The second receiving groove C abuts against the other side 402 d of the light splitting component 402 . Adhesive is provided in the second receiving groove C and is bonded and fixed to the other side 402 d of the light splitting component 402 .

[0167] Optionally, a first receiving groove B is provided on the first side surface 4012c, and a second receiving groove C is provided on the second side surface 4012d. This can be achieved by, but not limited to, the following methods:

[0168] Method 1 (A):

[0169] A first accommodating member 40121 is protruded from the first side surface 4012c. The first accommodating member 40121 and the first side surface 4012c are combined to form a first accommodating groove B. A side of the first accommodating member 40121 away from the first side surface 4012c abuts against a side 402c of the light splitting component 402.

[0170] A second receiving member 40122 is protruded from the second side surface 4012d. The second receiving member 40122 and the second side surface 4012d are combined to form a second receiving groove C. A side of the second receiving member 40122 away from the second side surface 4012d abuts against the other side 402d of the light splitting component 402.

[0171] Optionally, the first accommodating member 40121 and the second accommodating member 40122 are symmetrical with respect to the optical axis of the optical lens.

[0172] Method 2 (A):

[0173] A first receiving groove B is formed on the first side surface 4012 c , and the first side surface 4012 c abuts against a side 402 c of the light splitting component 402 .

[0174] A first receiving groove C is formed on the second side surface 4012 d , and the second side surface 4012 d abuts against the other side 402 d of the light splitting component 402 .

[0175] It should be understood that the above-mentioned methods 1 (A) to 2 (A) are merely two possible methods, which are illustrative of setting the first accommodating groove B on the first side 4012c and setting the second accommodating groove C on the second side 4012d, and should not constitute a limitation on the embodiments of the present application.

[0176] It should be understood that new embodiments obtained based on reasonable variations, supplements or combinations of the above-mentioned methods 1 (A) to 2 (A) all fall within the protection scope of the embodiments of the present application.

[0177] In addition, in bonding scheme three (A), the side of the first accommodating groove B away from the first side 4012c abuts against one side of the first prism 4021 and one side of the second prism 4022, and the side of the second accommodating groove C away from the second side 4012d abuts against the other side of the first prism 4021 and the other side of the second prism 4022.

[0178] It is understood that the side of the first receiving groove B away from the first side surface 4012c abuts against one side of the first prism 4021 and one side of the second prism 4022, so that the adhesive is filled into the first receiving groove B, so that the adhesive covers one side of the first prism 4021 and one side of the second prism 4022. The side of the second receiving groove C away from the second side surface 4012d abuts against the other side of the first prism 4021 and the other side of the second prism 4022, so that the adhesive is filled into the second receiving groove C, so that the adhesive covers the other side of the first prism 4021 and the other side of the second prism 4022.

[0179] Through this bonding scheme three (A), the two sides of the first prism 4021 in the spectrometer component 402 can be bonded to the two side surfaces of the second accommodating cavity 4012, and the two sides of the second prism 4022 in the spectrometer component 402 can be bonded to the two side surfaces of the second accommodating cavity 4012, thereby enhancing the reliability and stability of the bonding of the spectrometer component 402.

[0180] Bonding solution three (B):

[0181] Optionally, see Figure 10A 、 Figure 10B and Figure 10C , Figure 10A This is a three-dimensional schematic diagram of a bonding solution three (B) provided in an embodiment of the present application. Figure 10B A cross-sectional schematic diagram of a bonding solution 3 (B) provided in an embodiment of the present application, Figure 10C This is a cross-sectional diagram of another bonding solution 3 (B) provided in the embodiment of the present application. It can be understood that, Figure 10B 、 Figure 10C The cross-section shown can be considered as Figure 10A The stereogram shown is a cross-sectional view perpendicular to the direction from the object side to the image side.

[0182] like Figure 10A 、 Figure 10B 、 Figure 10C As shown, the inner wall surface of the second accommodating cavity 4012 includes a first side surface 4012c and a second side surface 4012d that are arranged opposite to each other.

[0183] A first receiving groove B is provided on the first side surface 4012 c , and the first receiving groove B abuts against a side 402 c of the light splitting component 402 . Adhesive is provided in the first receiving groove B and is bonded and fixed to the side 402 c of the light splitting component 402 .

[0184] A second receiving groove C is provided on the second side surface 4012 d . The second receiving groove C abuts against the other side 402 d of the light splitting component 402 . Adhesive is provided in the second receiving groove C and is bonded and fixed to the other side 402 d of the light splitting component 402 .

[0185] In addition, in bonding scheme three (B), the first accommodating groove B includes three first sub-accommodating grooves (B1, B2, B3), and the three first sub-accommodating grooves (B1, B2, B3) are arranged in sequence; the side of the three first sub-accommodating grooves (B1, B2, B3) away from the first side surface 4012c is in contact with one side of the first prism 4021 and one side of the second prism 4022, and the adhesive is arranged in the three first sub-accommodating grooves (B1, B2, B3) and is bonded and fixed to one side of the first prism 4021 and one side of the second prism 4022. The second accommodating groove C includes three second sub-accommodating grooves (C1, C2, C3), and the three second sub-accommodating grooves (C1, C2, C3) are arranged in sequence; the side of the three second sub-accommodating grooves (C1, C2, C3) away from the second side surface 4012d is in contact with the other side of the first prism 4021 and the other side of the second prism 4022, and the adhesive is arranged in the three second sub-accommodating grooves (C1, C2, C3) and is bonded and fixed to the other side of the first prism 4021 and the other side of the second prism 4022.

[0186] It can be understood that the complete first receiving groove B is divided into three first sub-receiving grooves (B1, B2, B3) arranged in sequence, and the side of the three first sub-receiving grooves (B1, B2, B3) away from the first side surface 4012c is in contact with one side of the first prism 4021 and one side of the second prism 4022, so that the adhesive is filled into the three first sub-receiving grooves (B1, B2, B3), so that the adhesive can cover one side of the first prism 4021 and one side of the second prism 4022. The complete second receiving groove C is divided into three second sub-receiving grooves (C1, C2, C3) arranged in sequence. The side of the three second sub-receiving grooves (C1, C2, C3) away from the second side surface 4012d is in contact with the other side of the first prism 4021 and the other side of the second prism 4022, so that the adhesive is filled into the three second sub-receiving grooves (C1, C2, C3) so that the adhesive can cover the other side of the first prism 4021 and the other side of the second prism 4022.

[0187] Through this bonding scheme three (B), the two sides of the first prism 4021 in the spectrometer component 402 can be bonded to the two side surfaces of the second accommodating cavity 4012, and the two sides of the second prism 4022 in the spectrometer component 402 can be bonded to the two side surfaces of the second accommodating cavity 4012, thereby enhancing the reliability and stability of the bonding of the spectrometer component 402.

[0188] Moreover, by dividing the complete receiving groove into a plurality of sub-receiving grooves arranged in sequence, the stress influence of the spectrometer component 402 under external forces, high and low temperatures, etc. can be reduced, thereby improving the stability and reliability of the spectrometer component 402 in transmitting light to the optical lens.

[0189] Optionally, a first receiving groove B is provided on the first side surface 4012c, and a second receiving groove C is provided on the second side surface 4012d. This can be achieved by, but not limited to, the following methods:

[0190] Method 1 (B):

[0191] A first accommodating member 40121 (including three first sub-accommodating members 401211, 401212, and 401213) is protruded on the first side surface 4012c. The first accommodating member 40121 (including three first sub-accommodating members 401211, 401212, and 401213) and the first side surface 4012c are combined to form a first accommodating groove B (including three first sub-accommodating grooves B1, B2, and B3). The side of the first accommodating member 40121 away from the first side surface 4012c abuts against the side 402c of the spectrometer component 402.

[0192] A second accommodating member 40122 (including three second sub-accommodating members 401221, 401222, and 401223) is protruded on the second side surface 4012d. The second accommodating member 40122 (including three second sub-accommodating members 401221, 401222, and 401223) and the second side surface 4012d are combined to form a second accommodating groove C (including three second sub-accommodating grooves C1, C2, and C3). The side of the second accommodating member 40122 away from the second side surface 4012d abuts against the other side 402d of the spectrometer component 402.

[0193] Optionally, the first accommodating member 40121 and the second accommodating member 40122 are symmetrical with respect to the optical axis of the optical lens.

[0194] Method 2 (B):

[0195] A first receiving groove B (including three first sub-receiving grooves B1 , B2 , and B3 ) is formed on the first side surface 4012 c , and the first side surface 4012 c abuts against a side 402 c of the light splitting component 402 .

[0196] A first receiving groove C (including three second sub-receiving grooves C1 , C2 , and C3 ) is formed on the second side surface 4012 d , and the second side surface 4012 d abuts against the other side 402 d of the light splitting component 402 .

[0197] It should be understood that the above-mentioned methods 1 (B) to 2 (B) are merely two possible methods, which are illustrative of setting the first accommodating groove B on the first side 4012c and setting the second accommodating groove C on the second side 4012d, and should not constitute a limitation on the embodiments of the present application.

[0198] It should be understood that new embodiments obtained based on reasonable variations, supplements or combinations of the above-mentioned methods 1 (B) to 2 (B) all fall within the protection scope of the embodiments of the present application.

[0199] Bonding solution three (C):

[0200] Optionally, see Figure 11A 、 Figure 11B and Figure 11C , Figure 11A This is a three-dimensional schematic diagram of a bonding solution three (C) provided in an embodiment of the present application. Figure 11B This is a cross-sectional schematic diagram of a bonding solution three (C) provided in an embodiment of the present application. Figure 11C This is a cross-sectional diagram of another bonding solution 3 (C) provided in the embodiment of the present application. It can be understood that, Figure 11B 、 Figure 11C The cross-section shown can be considered as Figure 11A The stereogram shown is a cross-sectional view perpendicular to the direction from the object side to the image side.

[0201] like Figure 11A 、 Figure 11B 、 Figure 11C As shown, the inner wall surface of the second accommodating cavity 4012 includes a first side surface 4012c and a second side surface 4012d that are arranged opposite to each other.

[0202] A first receiving groove B is provided on the first side surface 4012 c , and the first receiving groove B abuts against a side 402 c of the light splitting component 402 . Adhesive is provided in the first receiving groove B and is bonded and fixed to the side 402 c of the light splitting component 402 .

[0203] A second receiving groove C is provided on the second side surface 4012 d . The second receiving groove C abuts against the other side 402 d of the light splitting component 402 . Adhesive is provided in the second receiving groove C and is bonded and fixed to the other side 402 d of the light splitting component 402 .

[0204] Furthermore, in bonding solution three (C), the first prism 4021 is located near the first accommodating cavity 4011, while the second prism 4022 is located away from the first accommodating cavity 4011. The side of the first accommodating groove B away from the first side surface 4012c abuts against one side of the second prism 4022, while the side of the second accommodating groove C away from the second side surface 4012d abuts against the other side of the second prism 4022. Adhesive is applied to the top 402a of the first prism 4021.

[0205] It can be understood that the side of the first receiving groove B away from the first side 4012c abuts against one side of the second prism 4022, thereby filling the first receiving groove B with adhesive so that the adhesive covers one side of the second prism 4022. The side of the second receiving groove C away from the second side 4012d abuts against the other side of the second prism 4022, thereby filling the second receiving groove C with adhesive so that the adhesive covers the other side of the second prism 4022. Since both sides of the first prism 4021 are not covered by adhesive, it cannot be bonded to the two side surfaces of the second receiving cavity 4012. However, the first prism 4021 is close to the first receiving cavity 4011 and abuts against the inner wall surface of the second receiving cavity 4012 near the first receiving cavity 4011 (which can be understood as the stop surface), which can provide a certain degree of fixation. Therefore, by applying adhesive on the top 402a of the first prism 4021, the first prism 4021 can be fixedly bonded to the top surface 4012a of the second receiving cavity 4012.

[0206] Through this bonding scheme three (C), the two sides of the second prism 4022 in the spectrometer component 402 can be bonded to the two side surfaces of the second accommodating cavity 4012, and the top 402a of the first prism 4021 in the spectrometer component 402 can be bonded to the top surface 4012a of the second accommodating cavity 4012, thereby enhancing the reliability and stability of the bonding of the spectrometer component 402.

[0207] Moreover, the adhesive used in the bonding scheme three (C) does not cover the joint surface between the first prism 4021 and the second prism 4022, which can reduce the stress influence of the spectrometer component 402 under external forces, high and low temperatures, etc., thereby improving the stability and reliability of the spectrometer component 402 in the light spectrometry transmission of the optical lens.

[0208] Optionally, a first receiving groove B is provided on the first side surface 4012c, and a second receiving groove C is provided on the second side surface 4012d. This can be achieved by, but not limited to, the following methods:

[0209] Method 1 (C):

[0210] A first accommodating member 40121 is protruded from the first side surface 4012c. The first accommodating member 40121 and the first side surface 4012c are combined to form a first accommodating groove B. A side of the first accommodating member 40121 away from the first side surface 4012c abuts against a side 402c of the light splitting component 402.

[0211] A second receiving member 40122 is protruded from the second side surface 4012d. The second receiving member 40122 and the second side surface 4012d are combined to form a second receiving groove C. A side of the second receiving member 40122 away from the second side surface 4012d abuts against the other side 402d of the light splitting component 402.

[0212] Optionally, the first accommodating member 40121 and the second accommodating member 40122 are symmetrical with respect to the optical axis of the optical lens.

[0213] Method 2 (C):

[0214] A first receiving groove B is formed on the first side surface 4012 c , and the first side surface 4012 c abuts against a side 402 c of the light splitting component 402 .

[0215] A first receiving groove C is formed on the second side surface 4012 d , and the second side surface 4012 d abuts against the other side 402 d of the light splitting component 402 .

[0216] It should be understood that the above-mentioned methods 1 (C) to 2 (C) are merely two possible methods, which are used to exemplify the setting of the first accommodating groove B on the first side 4012c and the setting of the second accommodating groove C on the second side 4012d, and should not constitute a limitation on the embodiments of the present application.

[0217] It should be understood that new embodiments obtained based on reasonable variations, supplements or combinations of the above-mentioned methods 1 (C) to 2 (C) all fall within the protection scope of the embodiments of the present application.

[0218] It should be understood that the above bonding solutions 1 to 3 are merely several possible bonding solutions, which are provided as examples of how to bond and fix the light splitting component 402 in the second accommodating cavity 4012, and should not limit the embodiments of the present application.

[0219] It should be understood that new embodiments obtained based on reasonable variations, supplements or combinations of the above-mentioned bonding schemes 1 to 3 all fall within the protection scope of the embodiments of the present application.

[0220] Optionally, in addition to bonding and fixing the spectrometer component 402 in the second accommodating cavity 4012 through the above-mentioned bonding solution, the spectrometer component 402 can also be assembled in the second accommodating cavity 4012 through prism visual positioning, which is not limited in this embodiment of the present application.

[0221] Optionally, a bonding solution including but not limited to the above can be selected according to different tolerance requirements to bond and fix the light splitting component 402 in the second accommodating cavity 4012, which is not limited in this embodiment of the present application.

[0222] In a possible embodiment, the optical machine bracket 401 further includes a body, a first cover plate, and a second cover plate.

[0223] Alternatively, please refer to the above Figure 6 ,like Figure 6 As shown, the second accommodating cavity 4012 is arranged in the main body, and the main body is provided with a first opening and a second opening, both of which are connected to the second accommodating cavity 4012, the first opening is located at the top of the second accommodating cavity 4012, and the second opening is located on the side of the second accommodating cavity 4012 away from the first accommodating cavity 4011.

[0224] The first cover plate is sealed and fixed to the body through a first sealing member, and the first cover plate closes the first opening.

[0225] The second cover plate is sealed and fixed to the body through a second sealing member, and the second cover plate closes the second opening.

[0226] Optionally, the first seal and / or the second seal may be an adhesive, and the sealing and fixation between the cover plate and the opening may be achieved by arranging the adhesive at intervals between the cover plate and the opening, or arranging the adhesive in a whole circle, etc., and this embodiment of the present application does not impose any restrictions on this.

[0227] Optionally, see Figure 12 , Figure 12 A schematic diagram of a seal provided in an embodiment of the present application.

[0228] like Figure 12 As shown, a whole circle of soft rubber is provided on the periphery of the first cover plate and the second cover plate, and several hard rubbers are provided at intervals on the inner sides of the first cover plate and the second cover plate to achieve sealing and fixation between the cover plate and the opening.

[0229] It can be understood that by sealing and fixing the first cover plate to the first opening of the optical machine bracket body through the first sealing member, and sealing and fixing the second cover plate to the second opening of the optical machine bracket body through the second sealing member, the sealing inside the second accommodating cavity 4012 can be ensured, thereby ensuring the stability and reliability of the light splitting transmission of the optical lens by the splitting component 402 placed in the second accommodating cavity 4012, thereby achieving high-quality imaging.

[0230] In a possible embodiment, the light splitting device 40 further includes an optical lens.

[0231] Alternatively, please refer to the above Figure 6 ,like Figure 6As shown, a first step surface is provided on the outside of the optical lens, a first accommodating cavity 4011 of the optical machine bracket 401 is sleeved on the optical lens, and one end of the optical machine bracket 401 and the first step surface are arranged relative to each other, and a third sealing member is provided between one end of the optical machine bracket 401 and the first step surface.

[0232] Optionally, the third sealing member may be an adhesive, and sealing and fixing between one end of the optical machine bracket 401 and the first step surface may be achieved by arranging the adhesive at intervals between one end of the optical machine bracket 401 and the first step surface, or arranging the adhesive in a whole circle. This embodiment of the present application does not impose any restrictions on this.

[0233] It can be understood that by sealing and fixing one end of the optical machine bracket 401 to the first step surface through the third sealing member, the sealing inside the first accommodating cavity 4011 can be ensured, thereby ensuring the stability and reliability of light transmission of the optical lens placed in the first accommodating cavity 4011, thereby achieving high-quality imaging.

[0234] In a possible embodiment, a second step surface is provided inside the optical lens, one end of the optical element in the optical lens is spaced apart from the second step surface and arranged opposite to each other, and a fourth seal is provided between the one end of the optical element and the second step surface.

[0235] Optionally, the fourth sealing member may be an adhesive, and sealing and fixing between one end of the optical element in the optical lens and the second step surface may be achieved by arranging the adhesive at intervals between the one end of the optical element in the optical lens and the second step surface, or arranging the adhesive in a whole circle. This embodiment of the present application does not impose any restrictions on this.

[0236] It can be understood that by sealing and fixing one end of the optical element in the optical lens to the second step surface through the fourth seal, the sealing inside the optical lens can be ensured, thereby ensuring the stability and reliability of light transmission of the optical element placed in the optical lens, thereby achieving high-quality imaging.

[0237] Optionally, the optical lens includes a first section and a second section, the first section and the second section are connected by a connecting portion, the outer diameter of the second section is larger than the outer diameter of the first section, and the first step surface and the second step surface are located on opposite sides of the connecting portion.

[0238] It can be understood that by designing the first step surface and the second step surface on opposite sides of the connecting part, the sealing, reliability and stability of the connection structure between the optical lens and the optical machine bracket 401 can be improved, and the sealing, reliability and stability of the connection structure between the optical lens and the optical element in the optical lens can be improved.

[0239] Optionally, a photosensitive surface of the first sensor is provided on an inner side of the first cover plate, and a photosensitive surface of the second sensor is provided on an inner side of the second cover plate.

[0240] It can be understood that since the defocus amount of the turning light path of the spectroscopic component is greatly affected by the movement of the spectroscopic component, a first sensor (infrared light sensor) with a larger depth of field (DOF) can be set on the turning light path of the spectroscopic component, and the defocus amount of the straight light path of the spectroscopic component is less affected by the movement of the spectroscopic component, so a second sensor (visible light sensor) with a smaller DOF can be set on the straight light path of the spectroscopic component, thereby achieving high-quality imaging of the first sensor and the second sensor.

[0241] Optionally, the first sensor includes an infrared light sensor, and the second sensor includes a visible light sensor.

[0242] It is understandable that the first sensor includes an infrared light sensor, such as a laser vision radar such as a lidar, and the second sensor includes a visible light sensor, such as a camera.

[0243] Through the embodiments of the present application, the advantages of the point cloud data of the lidar and the image data of the camera can be combined to improve the perception accuracy of intelligent driving.

[0244] The present application provides a sensing device. Figure 13 , Figure 13 A schematic diagram of a sensing device provided in an embodiment of the present application.

[0245] Optionally, the sensing device includes a sensor that uses light to sense the environment, such as one or more of a laser radar, a camera, or a fusion sensing device. The fusion sensing device includes multiple types of sensors such as a laser radar, a camera, and a radar.

[0246] like Figure 13 As shown, the sensing device 200 includes a light receiving device 100 and a light emitting device 300. The light receiving device 100 may be specifically described in the above description of the light splitting device.

[0247] The light emitting device 300 is capable of generating an emission light beam. For example, the light emitting device 300 includes a light source. Exemplarily, the light source includes one or more of a vertical surface emitting laser and / or an edge emitting laser (EEL). Wherein, when the vertical surface emitting laser is arranged on a circuit board, the light emitting surface is parallel to the surface of the circuit board, such as one or more of a VCSEL, a PCSEL, a horizontal cavity surface-emitting laser (HCSEL), a fiber laser, etc. For example, the light source may be a single VCSEL chip, or a VCSEL chipset formed by splicing multiple VCSEL chips. An edge emitting laser refers to a laser that emits light through a side surface. In other words, when the edge emitting laser is arranged on a circuit board, the light emitting surface is a side surface (or perpendicular to the surface of the circuit board). Alternatively, the EEL may be replaced by other devices that emit light at the edge of a light emitting element, such as a silicon photonic chip.

[0248] The light receiving device 100 is used to receive a return light beam, which includes an echo of the transmitted light beam and may also include light from other light sources in the environment. The light transmitting device can obtain relevant information about the target in the environment based on the echo of the transmitted light beam.

[0249] Furthermore, the optical receiving device 100 is also used to receive a light beam from the object space. The light beam from the object space includes a return light beam and also includes background light. The optical receiving device 100 can use the feedback light beam to obtain at least a point cloud of the environment, and use the background light beam to obtain an image of the environment.

[0250] The embodiment of the present application also provides a terminal, which includes the spectroscopic device or sensing device provided by the present application. The terminal here may be an intelligent terminal or a means of transportation such as a vehicle, a drone, or a robot. It should be understood that the vehicle here is a vehicle in a broad sense, which may be a means of transportation (such as a commercial vehicle, a passenger car, a motorcycle, a flying car, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), an agricultural equipment (such as a mower, a harvester, etc.), etc. For another example, the robot may be an intelligent handling robot (automated guided vehicle, AGV), a walking conversational robot, a service robot, or other robots. One or more spectroscopic devices or sensing devices provided by the present application are deployed on the terminal.

[0251] For details, please refer to Figure 14 , Figure 14This is a schematic diagram of a vehicle provided in an embodiment of the present application. The sensing device can sense the surrounding environment of the vehicle and obtain relevant information about targets in the surrounding environment. The relevant information about these targets can be used to control the vehicle or assist the driver in driving. It should be understood that Figure 14 The sensing device installation locations shown are only examples. In practice, the detection device may be installed in other locations, such as on the top of the cabin, or at the front, side, or rear of the vehicle.

[0252] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A spectroscopic device, characterized in that: The spectroscopic device comprises: Optical machine bracket, spectrometer components; The optical machine bracket includes a first accommodating cavity and a second accommodating cavity arranged in sequence from the object side to the image side, the first accommodating cavity is used to place the optical lens, and the second accommodating cavity is used to place the beam splitting component, and the beam splitting component is used to receive the light from the optical lens and split the light from the optical lens for transmission; At least one abutting side of the light splitting component abuts against the inner wall surface of the second accommodating cavity, and at least one bonding side of the light splitting component is bonded and fixed to the inner wall surface of the second accommodating cavity by an adhesive.

2. The spectroscopic device according to claim 1, wherein At least one abutting side of the light splitting component abuts against the inner wall surface of the second accommodating cavity, comprising: One side of the light splitting component abuts against the inner wall surface of the second accommodating cavity close to the first accommodating cavity, and the other side of the light splitting component abuts against the bottom surface of the second accommodating cavity.

3. The spectroscopic device according to claim 1 or 2, characterized in that The position where the adhesive is bonded to the light splitting component is symmetrical with respect to the optical axis of the optical lens.

4. The spectroscopic device according to any one of claims 1 to 3, characterized in that The inner wall surface of the second accommodating cavity includes a first side surface and a second side surface that are oppositely arranged; Wherein, a first receiving groove is provided on the first side surface, the first receiving groove abuts against one side of the light splitting component, and the adhesive is provided in the first receiving groove and is bonded and fixed to one side of the light splitting component; A second receiving groove is provided on the second side surface, the second receiving groove abuts against the other side of the light splitting component, and the adhesive is provided in the second receiving groove and is bonded and fixed to the other side of the light splitting component.

5. The spectroscopic device according to claim 4, wherein: The first receiving groove and the second receiving groove are symmetrical with respect to the optical axis of the optical lens.

6. The spectroscopic device according to claim 4 or 5, characterized in that A first accommodating member is protruded from the first side surface, and the first accommodating member and the first side surface are combined to form the first accommodating groove; a side of the first accommodating member away from the first side surface abuts against a side of the light splitting component; A second accommodating member is protruded from the second side surface, and the second accommodating member and the second side surface are combined to form the second accommodating groove; a side of the second accommodating member away from the second side surface abuts against the other side of the light splitting component.

7. The spectroscopic device according to claim 4 or 5, characterized in that The first accommodating groove is recessed on the first side surface; the first side surface abuts against one side of the light splitting component; The first accommodating groove is recessed on the second side surface; the second side surface abuts against the other side of the light splitting component.

8. The spectroscopic device according to any one of claims 4 to 7, characterized in that The light splitting component includes a prism formed by splicing a first prism and a second prism, and a splicing surface of the first prism and the second prism forms a first angle with the optical axis of the optical lens.

9. The spectroscopic device according to claim 8, wherein The side of the first accommodating groove away from the first side abuts against one side of the first prism and one side of the second prism, and the side of the second accommodating groove away from the second side abuts against the other side of the first prism and the other side of the second prism.

10. The spectroscopic device according to claim 8, wherein The first receiving groove includes N first sub-receiving grooves, and the N first sub-receiving grooves are arranged in sequence at intervals; a side of the N first sub-receiving grooves away from the first side surface abuts against a side of the first prism and a side of the second prism, and the adhesive is disposed in the N first sub-receiving grooves and is bonded and fixed to a side of the first prism and a side of the second prism; The second accommodating groove includes N second sub-accommodating grooves, and the N second sub-accommodating grooves are arranged in sequence at intervals; the side of the N second sub-accommodating grooves away from the second side surface abuts against the other side of the first prism and the other side of the second prism, and the adhesive is arranged in the N second sub-accommodating grooves and bonded and fixed to the other side of the first prism and the other side of the second prism, and N is an integer greater than 1.

11. The spectroscopic device according to claim 8, wherein The first prism is close to the first accommodating cavity, and the second prism is far away from the first accommodating cavity; the side of the first accommodating groove away from the first side abuts against one side of the second prism, and the side of the second accommodating groove away from the second side abuts against the other side of the second prism; an adhesive is provided on the top of the first prism.

12. The spectroscopic device according to any one of claims 1 to 3, characterized in that The inner wall surface of the second accommodating cavity includes a top surface and a bottom surface that are oppositely arranged; The top of the light-splitting component is bonded and fixed to the top surface via the adhesive, and / or the bottom of the light-splitting component is bonded and fixed to the bottom surface via the adhesive.

13. The spectroscopic device according to any one of claims 1 to 3, characterized in that The inner wall surface of the second accommodating cavity includes a top surface and a bottom surface that are oppositely arranged; The bottom surface is provided with a first groove, the adhesive is arranged in the first groove and bonded to the bottom of the spectrometer component, and / or the top of the spectrometer component is bonded to the top surface via the adhesive.

14. The spectroscopic device according to any one of claims 1 to 13, characterized in that The optical machine bracket further includes a body, a first cover plate and a second cover plate; The second accommodating cavity is provided in the main body, and the main body is provided with a first opening and a second opening, and the first opening and the second opening are both connected to the second accommodating cavity; the first opening is located at the top of the second accommodating cavity, and the second opening is located at a side of the second accommodating cavity away from the first accommodating cavity; The first cover plate is sealed and fixed to the body through a first sealing member, and the first cover plate closes the first opening; the second cover plate is sealed and fixed to the body through a second sealing member, and the second cover plate closes the second opening.

15. The spectroscopic device according to any one of claims 1 to 14, characterized in that The spectroscopic device also includes the optical lens; wherein, a first step surface is provided on the outside of the optical lens, the first accommodating cavity of the optical machine bracket is sleeved on the optical lens, and one end of the optical machine bracket and the first step surface are arranged relative to each other with a spaced relationship, and a third sealing member is provided between one end of the optical machine bracket and the first step surface.

16. The spectroscopic device according to claim 15, wherein: A second step surface is provided inside the optical lens, one end of the optical element in the optical lens is arranged opposite to the second step surface with a distance therebetween, and a fourth seal is provided between the one end of the optical element and the second step surface.

17. The spectroscopic device according to claim 16, wherein: The optical lens includes a first section and a second section, the first section and the second section are connected by a connecting portion, the outer diameter of the second section is larger than the outer diameter of the first section; the first step surface and the second step surface are located on opposite sides of the connecting portion.

18. The spectroscopic device according to claim 14, wherein: The inner side of the first cover plate is provided with a photosensitive surface for a first sensor, and the inner side of the second cover plate is provided with a photosensitive surface for a second sensor.

19. The spectroscopic device according to claim 18, wherein The first sensor includes an infrared light sensor, and the second sensor includes a visible light sensor.

20. A terminal, characterized in that: The terminal includes the optical splitting device according to any one of claims 1 to 19.

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