Support and sensor system

Abstract

The utility model relates to a support and a sensor system. The retaining wall is arranged on the support body, and the light guide groove is formed in the retaining wall, so that light emitted by the transmitting end is effectively managed. Specifically, the light guide groove can ensure that the light of the transmitting end cannot directly irradiate the main pixel array, so that unnecessary reflection or scattering of the light on the main pixel array is avoided, interference to the distance measurement precision is reduced, meanwhile, the design of the light guide groove allows part of the light to penetrate through and be reflected to the sub-pixel array, and the distance measurement precision is improved. It is ensured that the sub-pixel array can receive enough light signals so as to carry out accurate distance measurement. According to the DTOF optical module, the retaining wall is arranged between the transmitting end and the receiving end, so that when the support is installed, the retaining wall cannot interfere with the receiving end, the sensor is protected, meanwhile, the light guide groove is arranged to prevent light from entering the main pixel array when the transmitting end emits light initially, and the ranging precision of the DTOF optical module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensor equipment, in particular to a bracket and a sensor system. BACKGROUND

[0002] ToF is the abbreviation of Time of Flight, which is directly translated as flight time. The distance of the target object is obtained by continuously sending light pulses to the target and receiving the light returned from the object by a sensor, and detecting the flight (round trip) time of the emitted and received light pulses. The DTOF optical module is mainly composed of a transmitting end (Tx) and a receiving end (Rx). The DTOF sensor used in the direct time-of-flight technology includes a main pixel array and a sub-pixel array. The sub-pixel array absorbs the light source emitted by the transmitting end (Tx) and records the start time as a signal with the absorption time. However, the main pixel array should block the absorption of the Tx light source as much as possible during this period to avoid ranging errors caused by signal interference.

[0003] Therefore, it is necessary to block the main pixel array and the sub-pixel array when the transmitting end initially emits light to prevent light from entering the main pixel array. In the prior art, a rib is usually installed on the DTOF bracket. The rib is arranged between the main pixel array and the sub-pixel array, and the bottom of the rib is in contact with the sensor to block the light from entering the main pixel array. However, this structure may scratch the sensor or interfere with the DTOF bracket and the sensor during the assembly of the DTOF bracket, causing damage to the sensor during assembly.

[0004] Therefore, how to improve the ranging accuracy of the DTOF optical module while protecting the sensor is a technical problem that needs to be solved by those skilled in the art at present. CONTENT OF THE INVENTION

[0005] The present application provides a bracket and a sensor system to improve the ranging accuracy of the DTOF optical module while protecting the sensor.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A bracket for supporting an optical module for direct time-of-flight technology, the optical module comprising a transmitting end and a receiving end, wherein:

[0008] The transmitting end is used for emitting light to a target;

[0009] The receiving end comprises a main pixel array and a sub-pixel array, and is used for receiving light reflected from the target;

[0010] The bracket comprises a bracket body and a barrier wall arranged on the bracket body, the barrier wall is located between the emitting end and the receiving end, and the barrier wall has at least one light guide groove.

[0011] When the emitting end emits light, the barrier wall is used for blocking the light emitted by the emitting end from being transmitted to the main pixel array, and part of the light emitted by the emitting end passes through the light guide groove, and the light guide groove is used for guiding the light passing through the light guide groove to be transmitted to the sub-pixel array.

[0012] Optionally, in the bracket, the light guide groove is in the shape of a trapezoid, a rectangle or a combination thereof, and the shape of the light guide groove is used for guiding the light emitted by the emitting end to be reflected to the sub-pixel array.

[0013] Optionally, in the bracket, the barrier wall and the bracket body are connected by means of fasteners, adhesives or one-piece forming.

[0014] Optionally, in the bracket, the emitting end comprises a vertical cavity surface emitting laser, and the distance between the light guide groove and the light emitting source of the vertical cavity surface emitting laser is 0.8-2 mm.

[0015] Optionally, in the bracket, the width of the light guide groove is 0.1-0.95 mm, and the depth of the light guide groove is 0.1-0.7 mm.

[0016] Optionally, in the bracket, the bracket comprises a first barrier edge arranged on the bracket body, the first barrier edge is arranged close to the receiving end and opposite to the barrier wall, and the first barrier edge is used for limiting the receiving end.

[0017] Optionally, in the bracket, the material of the bracket is engineering plastic.

[0018] Optionally, in the bracket, the optical module comprises a substrate, the emitting end and the receiving end are connected to the substrate, and the bottom of the barrier wall abuts against the substrate.

[0019] Optionally, in the bracket, a second barrier edge is connected to the first barrier edge, the second barrier edge is arranged perpendicularly to the first barrier edge, and the second barrier edge extends in a direction close to the barrier wall, and is used for guiding the light passing through the light guide groove to be reflected to the sub-pixel array.

[0020] The bracket provided in the application achieves effective management of the light emitted by the emitting end by arranging a retaining wall on the bracket body and arranging a light guide groove on the retaining wall. Specifically, the light guide groove can ensure that the light of the emitting end cannot directly irradiate the main pixel array, thereby avoiding unnecessary reflection or scattering of the light on the main pixel array, reducing interference with the ranging accuracy. At the same time, the design of the light guide groove allows the light to partially pass through and reflect to the sub-pixel array, ensuring that the sub-pixel array can receive sufficient light signals for accurate distance measurement. That is, by arranging the retaining wall between the emitting end and the receiving end, the retaining wall does not interfere with the receiving end when the bracket is installed, protecting the sensor, and by arranging the light guide groove, the light entering the main pixel array when the emitting end initially emits light is avoided, improving the ranging accuracy of the DTOF optical module.

[0021] A sensor system comprising an optical module for direct time-of-flight technology and a bracket as claimed in any of the preceding claims.

[0022] The sensor system provided in the application has all the technical effects of the bracket described above, and therefore the technical effects of the bracket are not described here again. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings from these drawings without creative labor. One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings, which do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings do not constitute a proportion limit.

[0024] Figure 1 Structural schematic diagrams of the bracket, the emitting end and the receiving end provided in the embodiments of the application;

[0025] Figure 2 Positional schematic diagrams of the emitting end and the receiving end provided in the embodiments of the application;

[0026] Figure 3 A structural schematic diagram of the light guide groove provided in the embodiments of the application;

[0027] Figure 4 Another structural schematic diagram of the light guide groove provided in the embodiments of the application;

[0028] Figure 5Another structural schematic view of the light guide groove provided by the embodiment of the present application is shown in FIG. 6;

[0029] Figure 6 Another structural schematic view of the light guide groove provided by the embodiment of the present application is shown in FIG. 6;

[0030] Figure 7 Another structural schematic view of the light guide groove provided by the embodiment of the present application is shown in FIG. 6;

[0031] Explanation of reference signs:

[0032] A substrate 100, an emitting end 200, a vertical cavity surface emitting laser 201, a receiving end 300, a main pixel array 301, a sub-pixel array 302, a barrier wall 400, a light guide groove 401, a first barrier edge 500, a second barrier edge 501, a bracket body 600. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0035] For ease of description, spatial relative terms can be used in the description to describe the relative position relationship or movement of one element or feature with respect to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or reversed or moved, the directional indications are also changed accordingly, for example: the element described as "under" or "below" the other element or feature will be subsequently oriented as "above" or "above" the other element or feature. Therefore, the example term "below" can include both upward and downward positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the description are interpreted accordingly.

[0036] SPAD (single photon avalanche diode) is a single photon avalanche diode that uses avalanche multiplication technology to convert segmented incident photons into electronic amplification, thereby forming an avalanche type superposition of relative structures. Even weak light can be detected, which is the most basic pixel unit of the sensor used in DTOF. The receiving end of the sensor has a main pixel array and a sub-pixel array. The transmitting end emits light. The sub-pixel array can absorb the light source first to record the starting time of the signal. However, the main pixel array should block the absorption of the light emitted by the transmitting end as much as possible in this stage to avoid signal interference and cause ranging errors.

[0037] The present application blocks the main pixel array 301 from receiving the initial light emitted by the transmitting end 200, which causes errors in the processing of signals by the single photon avalanche diode, and at the same time enables the sub-pixel array 302 to accept energy within a specified range to record the starting time of the signal.

[0038] Referring to Figures 1-2The embodiment of the present application provides a support for supporting an optical module for direct time-of-flight technology, the optical module comprises a transmitting end 200 and a receiving end 300, wherein the transmitting end 200 is used for transmitting light to a target, the receiving end 300 comprises a main pixel array 301 and a sub-pixel array 302 and is used for receiving light reflected from the target, the support comprises a support body 600 and a barrier wall 400, the barrier wall 400 is arranged on the support body 600, the barrier wall 400 is located between the transmitting end 200 and the receiving end 300, the barrier wall 400 has at least one light guide groove 401, when the transmitting end 200 emits light, the barrier wall 400 is used for blocking the light emitted by the transmitting end 200 from being transmitted to the main pixel array 301, and part of the light emitted by the transmitting end 200 passes through the light guide groove 401, and the light guide groove 401 is used for guiding the light passing through the light guide groove 401 to the sub-pixel array 302.

[0039] The optical module for direct time-of-flight technology is a DTOF optical module.

[0040] It should be noted that in the prior art, the ribs for shielding the light emitted by the transmitting end 200 are arranged between the main pixel array 301 and the sub-pixel array 302, that is, in order to ensure that the light cannot enter the main pixel array 301, the bottom of the ribs needs to be sealed with the sensor, in addition to the scheme that the bottom of the ribs directly abuts against the sensor (part for mounting the main pixel array 301 and the sub-pixel array 302), the scheme that the ribs are arranged to be suspended above the sensor is also used, and the gap between the bottom of the ribs and the sensor is filled by painting glue, but this method adds a process to the manufacturing process, and the sensor may react with the glue, causing the sensor to generate precipitates, and there are many unfavorable factors such as the amount and flow direction of the glue being difficult to control, so that the ranging accuracy of the DTOF optical module cannot be improved under the premise of protecting the sensor. The barrier wall 400 is arranged between the transmitting end 200 and the receiving end 300 in the present application, the installation of the barrier wall 400 does not contact the sensor, and the bottom of the barrier wall 400 does not directly interfere with the sensor, so that the sensor can be protected, the reflection path of the light emitted by the transmitting end 200 after entering the light guide groove 401 can be adjusted by adjusting the shape and opening position of the light guide groove 401, so that the light passing through the light guide groove 401 can only hit the sub-pixel array 302 and cannot hit the main pixel array 301, and the ranging accuracy of the DTOF optical module is improved.

[0041] The support provided in the application realizes effective management of light emitted by the emitting end 200 by arranging the retaining wall 400 on the support body 600 and arranging the light guide groove 401 on the retaining wall 400. Specifically, the light guide groove 401 can ensure that the light of the emitting end 200 cannot directly irradiate the main pixel array 301, thereby avoiding unnecessary reflection or scattering of light on the main pixel array 301, reducing the interference with the ranging accuracy. At the same time, the design of the light guide groove 401 allows the light to partially pass through and reflect to the sub-pixel array 302, ensuring that the sub-pixel array 302 can receive sufficient light signals for accurate distance measurement. That is, by arranging the retaining wall 400 between the emitting end 200 and the receiving end 300, when the support is installed, the retaining wall 400 does not interfere with the receiving end 300, protecting the sensor, and by arranging the light guide groove 401, the light entering the main pixel array 301 when the emitting end 200 initially emits light is avoided, improving the ranging accuracy of the DTOF optical module.

[0042] Referring to Figures 3-7 , in order to optimize the above technical solution, the shape of the light guide groove 401 is trapezoidal, rectangular or a combination thereof, and the shape of the light guide groove 401 is used to guide the light emitted by the emitting end 200 to reflect to the sub-pixel array 302. Specifically, the shape of the light guide groove 401 is at least one of the following shapes: straight line, curve, polygon, circle or a combination thereof, to adapt to different light reflection requirements and ensure that light is only guided to the sub-pixel array 302. The shape of the light guide groove 401 is preferably trapezoidal, rectangular or a combination thereof to facilitate the opening of the light guide groove 401. At the same time, because the shape of the sub-pixel array 302 is usually square, setting the edges of the light guide groove 401 to be trapezoidal, rectangular or a combination thereof can make the light passing through the light guide groove 401 form a shape with a straight edge, so that the light just hits the sub-pixel array 302 and does not hit the main pixel array 301, improving the ranging accuracy of the DTOF optical module.

[0043] Further, by more precise design of the light guide groove 401, such as using micro-nano machining technology to manufacture a micro-structure light guide groove 401 with a specific shape and size, the refraction path and angle of the light can be further accurately controlled, thereby reducing the interference with the main pixel array 301 and further improving the ranging accuracy of the DTOF optical module.

[0044] To optimize the above technical solutions, the retaining wall 400 and the bracket body 600 are connected by fasteners, adhesives, or one-piece molding. Specifically, the retaining wall 400 and the bracket body 600 can be connected in a split type. To ensure the stability and accuracy of the retaining wall 400 during long-term use, more reliable fixing methods can be used, such as using precise mechanical clamps, custom fasteners, or adhesives. The retaining wall 400 and the bracket body 600 can be detached, which facilitates maintenance and replacement, and improves the service life of the retaining wall 400 and the bracket body 600.

[0045] Further, a special positioning structure can also be designed on the bracket body 600, for example, a plurality of guide installation clamping grooves are arranged in parallel on one side of the bracket body 600 for connecting the retaining wall 400. During installation, the retaining wall 400 is clamped in the thickness direction in the guide installation clamping groove to accurately adjust and control the position and angle of the retaining wall 400. At the same time, the retaining wall 400 can be installed in different guide installation clamping grooves to flexibly change the distance between the retaining wall 400 and the emitting end 200, and meet different use requirements.

[0046] Further, the bracket body 600 or the retaining wall 400 can also be arranged with an adjustment mechanism, such as a micro motor (which realizes accurate adjustment of the position of the retaining wall 400 through a micro motor and a corresponding transmission mechanism, such as a lead screw, a gear, etc., and can realize automatic and accurate adjustment process through programming control), a piezoelectric ceramic (a piezoelectric ceramic material will produce a small deformation when subjected to an electric field, and a piezoelectric ceramic driver can be designed to fine-tune the position of the retaining wall 400 or the angle of the slot according to this characteristic. Such a driver has the advantages of fast response speed and high precision), etc., which can realize real-time adjustment of the position of the retaining wall 400 and the angle of the light guide slot 401. In this way, the path and efficiency of light guidance can be flexibly adjusted according to different application scenarios and light conditions, further improving the ranging accuracy of the DTOF optical module.

[0047] It should be noted that the specific choice of adjustment mechanism depends on factors such as the application scenario of the bracket, the cost budget, the accuracy requirement, etc. In actual application, it needs to be weighed and selected according to the specific situation.

[0048] In addition, the design of the adjustment mechanism also needs to consider its stability, reliability, and compatibility with other components, etc., to ensure that the DTOF optical module and the bracket can maintain stable performance and accuracy during long-term use.

[0049] To optimize the above technical solutions, the emitting end 200 comprises a vertical cavity surface emitting laser 201, and the distance between the light guide groove 401 and the light emitting source of the vertical cavity surface emitting laser 201 is 0.8-2 mm. It should be noted that the emitting end 200 can also comprise a laser diode LD or a light emitting diode LED, and the application preferably comprises the vertical cavity surface emitting laser 201. According to actual use and data measurement, when the distance between the light guide groove 401 and the light emitting source of the vertical cavity surface emitting laser 201 is 0.8-2 mm (including both end values), the light emitted by the vertical cavity surface emitting laser 201 can quickly pass through the light guide groove 401 and enter the sub-pixel array 302.

[0050] To optimize the above technical solutions, the groove width of the light guide groove 401 is 0.1-0.95 mm, and the groove depth of the light guide groove 401 is 0.1-0.7 mm. It should be noted that the groove width of the light guide groove 401 is the width of the slot, that is, the distance between one groove wall and another groove wall of the light guide groove 401 when facing the light guide groove 401, and the groove depth of the light guide groove 401 is the depth of the slot, that is, the width of the groove bottom of the light guide groove 401, and the application preferably has the groove depth of the light guide groove 401 equal to the thickness of the retaining wall 400. According to actual use and data measurement, when the groove width of the light guide groove 401 is 0.1-0.95 mm (including both end values) and the groove depth of the light guide groove 401 is 0.1-0.7 mm (including both end values), the retaining wall 400 can block most of the oblique light rays emitted by the emitting end 200 towards the receiving end 300, and the light rays passing through the light guide groove 401 (including the light rays directly passing through the light guide groove 401, the light rays passing through the light guide groove 401 after being reflected by other components of the emitting end 200, and the light rays passing through the light guide groove 401 after being reflected by the groove wall and groove bottom of the light guide groove 401) can reach the sub-pixel array 302 without reaching the main-pixel array 301.

[0051] It should be noted that the above parameters are the optimal parameters obtained through experiments and calculations, and when designing the slotting position and shape of the light guide groove 401, only data adjustment and selection in the above parameters are needed to meet the use needs, which will not be described herein.

[0052] It should be noted that within the above numerical range, the position of the light guide groove 401 can be arbitrarily set according to the use needs, including but not limited to being set at a position close to the substrate 100 (such as Figure 5 ) or a position far from the substrate 100 (such as Figure 3 and Figure 4 ) or a position in the middle of the retaining wall 400, as long as the light rays can be guided, which will not be described herein.

[0053] To optimize the above technical solution, the support includes a first retaining edge 500 arranged on the support body 600, the first retaining edge 500 being arranged close to the receiving end 300 and opposite the retaining wall 400, and the first retaining edge 500 being used for limiting the receiving end 300. Specifically, the support body 600 is provided with an area for accommodating the receiving end 300, and the installation of the receiving end 300 needs to be in this area, and the first retaining edge 500 is used to form one side of this area, which can protect the receiving end 300 while limiting the receiving end 300, because the transmission direction of light is from the light source of the vertical cavity surface emitting laser 201 to the sub-pixel array 302 through the light guide groove 401, and the first retaining edge 500 is arranged between the sub-pixel array 302 and the light guide groove 401, so the operator can design a certain shape of groove or hole on the first retaining edge 500 to cooperate with the light guide groove 401 to further guide the light, thereby further improving the ranging accuracy of the DTOF optical module.

[0054] To optimize the above technical solution, the material of the support is engineering plastic. It should be noted that when designing, the hardness, wear resistance and anti-aging performance of the material of the support should be considered to ensure that the retaining wall 400 can maintain stable performance during long-term use. The material of the support is preferably engineering plastic, and the support body 600 and the retaining wall 400 are integrally injection molded. Further, when designing, an anti-reflection coating can be added to the surface of the light guide groove 401 or other optical optimization means can be used to reduce the reflection and scattering of light on the surface of the light guide groove 401 (two groove walls and groove bottom). It should be noted that the main function of the retaining wall 400 is to limit the propagation path of light to ensure that only light of a specific design can reach the sub-pixel array 302. Therefore, the design of the light guide groove 401 is critical as it allows light of a specific angle and intensity to pass through the retaining wall 400 and be refracted to the sub-pixel array 302. The selection of the material of the surface of the light guide groove 401 of the retaining wall 400 is to ensure this function while minimizing the reflection and scattering of light on the surface of the light guide groove 401, thereby improving the efficiency and accuracy of light guidance and further improving the ranging accuracy of the DTOF optical module.

[0055] To optimize the above technical solution, the optical module includes a substrate 100, the emitting end 200 and the receiving end 300 are connected to the substrate 100, and the bottom of the retaining wall 400 abuts against the substrate 100. When the support is connected to the sensor, the bottom of the retaining wall 400 abuts against the substrate 100 to prevent light from entering the receiving end 300 from the bottom of the retaining wall 400. Because the bottom of the retaining wall 400 only abuts against the substrate 100 and is not connected to the receiving end 300, it will not damage the receiving end 300 of the optical module, avoiding the damage to the sensor in the prior art, thereby protecting the sensor.

[0056] In another embodiment, in order to protect the substrate 100, the barrier wall 400 can also be suspended above the substrate 100, and the gap between the substrate 100 and the bottom of the barrier wall 400 is filled with glue, so as to achieve the effect of blocking light. In this way, mechanical damage between the barrier wall 400 and the substrate 100 during installation can be avoided, thereby prolonging the service life of the barrier wall 400 and the substrate 100.

[0057] In order to optimize the above technical solutions, the first retaining edge 500 is connected with a second retaining edge 501, the second retaining edge 501 is arranged perpendicularly to the first retaining edge 500, and the second retaining edge 501 extends in a direction close to the barrier wall 400, for guiding the light passing through the light guide groove 401 to reflect to the sub-pixel array 302. Specifically, the second retaining edge 501 can be used to strengthen the structural strength of the first retaining edge 500, and the second retaining edge 501 is arranged close to the groove wall of the light guide groove 401. In use, part of the light passing through the light guide groove 401 will hit the second retaining edge 501, and reach the sub-pixel array 302 under the reflection of the second retaining edge 501. The second retaining edge 501 can assist in limiting the transmission path of the light, so as to prevent the main-pixel array 301 from absorbing the light, avoid the ranging error caused by the interference of the signal, and further improve the ranging accuracy of the DTOF optical module.

[0058] The embodiments of the present application also provide a sensor system, which comprises an optical module for direct time-of-flight technology and a bracket as any one of the above. The specific structure of the sensor system is referred to the above embodiments, and since all the technical solutions of the above embodiments are adopted, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, which will not be repeated here.

[0059] It should be noted that the bracket and the sensor system provided by the present application can be used in the technical field of sensor equipment or other fields. The other fields are any fields except the technical field of sensor equipment. The above is only an example, and does not limit the application field of the bracket and the sensor system provided by the present application.

[0060] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0061] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example implementations.

[0062] The foregoing is just a summary of the present application and thus can not include all applications of the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bracket for supporting an optical module for direct time-of-flight technology, the bracket comprising: a bracket body; and a barrier wall disposed on the bracket body, the barrier wall being located between a transmitting end and a receiving end of the optical module, the barrier wall having at least one light guide slot; wherein: the transmitting end is configured to emit light towards a target; the receiving end comprises a main pixel array and a sub-pixel array configured to receive light reflected from the target; the barrier wall is configured to block transmission of the light emitted by the transmitting end to the main pixel array, and to direct light that has passed through the light guide slot to the sub-pixel array. The light guide slot has a trapezoidal, rectangular or combination shape, and the shape of the light guide slot is configured to direct the light emitted by the transmitting end to reflect to the sub-pixel array. The barrier wall is connected to the bracket body by means of fasteners, adhesives or integral molding. The transmitting end comprises a vertical cavity surface emitting laser, and a distance between the light guide slot and a light emitting source of the vertical cavity surface emitting laser is 0.8-2 mm. The light guide slot has a slot width of 0.1-0.95 mm and a slot depth of 0.1-0.7 mm. The bracket comprises a first barrier edge disposed on the bracket body, the first barrier edge being located proximate to the receiving end and arranged opposite the barrier wall, and the first barrier edge is configured to limit the receiving end.

2. The stent of claim 1, wherein The bracket is made of engineering plastic.

3. The stent of claim 1, wherein The optical module comprises a substrate, and the transmitting end and the receiving end are connected to the substrate, and a bottom of the barrier wall abuts against the substrate.

4. The stent of claim 1, wherein The first barrier edge is connected to a second barrier edge, the second barrier edge being arranged perpendicularly to the first barrier edge and extending in a direction proximate to the barrier wall, and the second barrier edge is configured to direct the light that has passed through the light guide slot to reflect to the sub-pixel array.

5. The stent of claim 1, wherein The bracket is used in combination with the optical module for direct time-of-flight technology.

6. The stent defined in Claim 1, wherein, ​ 7. The stent defined in Claim 1, wherein ​ 8. The stent defined in Claim 1, wherein, ​ 9. The stent defined in Claim 6, wherein, ​ 10. A sensor system, characterized by ​

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