Optical support for laser ranging and laser ranging sensor

Abstract

The utility model discloses an optical support for laser ranging and a laser ranging sensor, and aims to solve the technical problem that a PCBA board and an optical support of a small laser ranging product are difficult to directly fix in the prior art. The optical support comprises an integrally-formed shell, the shell is provided with a laser module cavity and an optical lens cavity, and the optical lens cavity is further provided with a clamping part used for positioning the PCBA. Wherein the clamping part is used for fixing the PCBA board on the outer wall, facing the laser module cavity, of the optical lens cavity; or the clamping part is used for attaching the side wall of the PCBA board to the side surface of the shell. According to the invention, the miniaturization and microminiaturization of the laser distance measuring sensor can be realized, when the PCBA board and the optical support are fixed, the optical support positions the PCBA board based on the clamping part, an additional fixing mode is not needed, gluing fixation is not needed, the fixation between the PCBA board and the optical support is more stable, and the reliability of a product is improved.

Description

Technical Field

[0001] The present application relates to the field of laser ranging technology, and in particular to an optical bracket and a laser ranging sensor for laser ranging. Background Art

[0002] The optical support structure used in a laser rangefinder primarily consists of an optical receiving lens, an LD laser module, and an APD receiving board. The optical receiving lens collects the laser beam reflected from the object being measured. An LD (Laser Diode Module) laser module typically refers to a combination of a laser diode and its associated components, responsible for generating the laser light source. An APD (Avalanche Photodiode) is a highly sensitive light detector used to detect the reflected laser signal collected by the optical receiving lens. The receiving board also includes an amplifier and related circuitry for processing and amplifying the signal detected by the APD.

[0003] Currently, for larger optical brackets, the PCBA can be directly secured to the bracket using screws. However, with the trend toward smaller and more miniaturized laser rangefinders, optical brackets are now being designed to be ultra-thin, with the thinnest thickness being only around 7mm. Currently, the outer diameter of the smallest LD laser module is approximately 6mm. Therefore, the thinnest wall thickness of the LD laser module's mounting hole is less than 0.5mm, leaving little room for adjusting or calibrating the module's optical axis. Consequently, optical axis alignment and PCBA installation have become extremely difficult. Summary of the Invention

[0004] The purpose of this application is to provide an optical bracket and laser ranging sensor for laser ranging, thereby resolving the technical problem of the difficulty in directly securing the PCBA board and the optical bracket of small laser ranging products in the prior art. The various technical effects that can be achieved by the optional technical solutions provided in this application are detailed below.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] The present application provides an optical bracket for laser ranging, comprising an integrally formed housing, the housing being provided with a laser module cavity and an optical lens cavity, wherein the front end of the laser module cavity is flush with the front end of the optical lens cavity;

[0007] The laser module cavity is used to install the LD laser module;

[0008] The optical lens cavity is used to install the optical receiving lens and the APD receiving board;

[0009] The housing is further provided with a clamping portion for positioning the PCBA board;

[0010] The clamping portion is used to fix the PCBA board to the outer wall of the optical lens cavity facing the laser module cavity, so that the bottom of the PCBA board is fixed to the tail end of the laser module cavity and the optical lens cavity, and the length direction of the PCBA board is parallel to the depth direction of the laser module cavity and the optical lens cavity; or the clamping portion is used to fit the side wall of the PCBA board to the side of the shell.

[0011] In some embodiments, the tail ends of the laser module cavity and the optical lens cavity are stepped and matched with the bottom end of the L-shape of the PCBA board. The clamping portion is a groove, and the groove is provided on the outer wall of the optical lens cavity facing the laser module cavity. The width of the groove corresponds to the thickness of the PCBA board, and the length of the groove is matched with the length of the short side of the L-shape of the PCBA board.

[0012] In some embodiments, the laser module cavity is cylindrical in shape, and an extension line of the width direction of the groove toward the laser module cavity does not pass through the center of the circular cross section of the cylindrical laser module cavity.

[0013] In some embodiments, the groove is in the shape of a cuboid.

[0014] In some embodiments, the clamping portion is a screw hole, the screw hole passes through the shell, and the shell and the PCBA board are fixed by bolts passing through the screw hole.

[0015] In some embodiments, the side wall of the laser module cavity is provided with a glue injection hole. After the LD laser module adjusts the optical axis in the laser module cavity, the glue injection hole is used to inject glue to fix the LD laser module in the laser module cavity.

[0016] In a second aspect, the present application further provides a laser ranging sensor, comprising a PCBA board, an optical receiving lens, an LD laser module, an APD receiving board, and the optical bracket as described in any one of the first aspects;

[0017] The optical bracket includes an integrally formed housing, the housing being provided with a laser module cavity and an optical lens cavity, the front end of the laser module cavity being flush with the front end of the optical lens cavity;

[0018] The laser module cavity is used to install the LD laser module;

[0019] The optical lens cavity is used to install the optical receiving lens;

[0020] The housing is further provided with a clamping portion for positioning the PCBA board;

[0021] The LD laser module is arranged in the laser module cavity, the optical receiving lens is arranged in the front part of the optical lens cavity, the APD receiving board is arranged in the rear part of the optical lens cavity, and the PCBA board is fixed to the outer wall of the optical lens cavity facing the laser module cavity through the clamping portion, so that the bottom of the PCBA board is fixed to the rear end of the laser module cavity and the rear end of the optical lens cavity, and the length direction of the PCBA board is parallel to the depth direction of the laser module cavity and the depth direction of the optical lens cavity; or the PCBA board is fixed to the side of the housing through the clamping portion;

[0022] The pins of the LD laser module are fixed by welding to the pads of the PCBA board corresponding to the LD laser module, and the APD receiving board is fixed by welding to the pads of the PCBA board corresponding to the APD receiving board.

[0023] In some embodiments, the bottom end of the PCBA board is L-shaped, which is adapted to the tail ends of the laser module cavity and the optical lens cavity that are arranged in a stepped manner. The clamping portion is a groove, the width of the groove corresponds to the thickness of the PCBA board, and the length of the groove is adapted to the length of the short side of the L-shape of the PCBA board. The short side of the L-shape of the PCBA board is clamped in the groove, and the long side of the L-shape of the PCBA board is parallel to the APD receiving board, so that the thickness of the laser ranging sensor is equal to the thickness of the optical bracket.

[0024] In some embodiments, the depth of the laser module cavity is less than the length of the LD laser module, and the inner diameter of the laser module cavity is greater than the outer diameter of the LC laser module; the front end of the LD laser module is installed in the laser module cavity, and the tail end of the LD laser module extends from the tail end of the laser module cavity.

[0025] In some embodiments, the clamping portion is a screw hole, which passes through the shell. After the shell and the PCBA board are fixed by bolts passing through the screw holes, the pins of the LD laser module are welded and fixed to the pads of the PCBA board corresponding to the LD laser module, and the APD receiving board is welded and fixed to the pads of the PCBA board corresponding to the APD receiving board.

[0026] Implementing one of the above-mentioned technical solutions of the present application has the following advantages or beneficial effects: the optical bracket and laser ranging sensor for laser ranging of the present application, an LD laser module is installed in the laser module cavity of the optical bracket, and an optical receiving lens and an APD receiving board are installed in the optical lens cavity. The PCBA board can be fixed to the outer wall of the optical lens cavity facing the laser module cavity, that is, at the tail end of the optical bracket, through the clamping portion of the shell, without occupying additional thickness, so that the thickness of the laser ranging sensor is consistent with the thickness of the optical bracket; or, through the clamping portion on the optical lens cavity, the side wall of the PCBA board is attached to the side surface of the optical bracket, so that the thickness of the laser ranging sensor is the sum of the thickness of the optical bracket and the thickness of the PCBA board. In this way, the thickness of the laser ranging sensor can be very small, thereby realizing the miniaturization and micro-miniaturization of the laser ranging sensor. Moreover, since the clamping portion can position the PCBA board in the housing of the optical bracket, the fixation between the PCBA board and the optical bracket is more reliable. The pins of the LD laser module can be welded and fixed to the laser pads of the PCBA board, and the solder points of the APD receiving board can be welded and fixed to the receiving solder points of the PCBA board. No additional fixing method is required, and the fixation between the PCBA board and the optical bracket will be more stable, thereby improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work. In the drawings:

[0028] Figure 1 1 is a schematic diagram of the first structure of an optical bracket for laser ranging according to an embodiment of the present application;

[0029] Figure 2 1 is a second structural schematic diagram of an optical bracket for laser ranging according to an embodiment of the present application;

[0030] Figure 3 Schematic diagram of the structure of the laser ranging sensor involved in the embodiment of the present application;

[0031] Figure 4 It is an exploded diagram of the laser ranging sensor involved in the embodiment of the present application.

[0032] In the figure: 10, optical bracket; 20, PCBA board; 30, optical receiving lens; 40, LD laser module; 41, pin; 50, APD receiving board; 60, front end; 70, tail end; 11, laser module cavity; 12, optical lens cavity; 13, groove; 14, screw hole; 15, glue injection hole; 21, soldering pad; 22, soldering pad; 23, short side; 24, long side; 51, solder point. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, in which various exemplary embodiments that may be used to implement the present application are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present disclosure. It should be understood that they are only examples of processes, methods and devices that are consistent with some aspects disclosed in the present application as detailed in the appended claims, and other embodiments may also be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and essence of the present application.

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse" and the like indicate the orientation or positional relationship based on the figures, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation. The terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "multiple" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In order to illustrate the technical solution described in this application, a specific embodiment is provided below, and only the parts related to the embodiment of this application are shown.

[0036] like Figures 1 to 4As shown, the present application provides an optical bracket 10 for laser ranging, comprising an integrally formed housing, wherein the housing is provided with a laser module cavity 11 and an optical lens cavity 12: a front end 60 of the laser module cavity 11 is flush with a front end 60 of the optical lens cavity 12;

[0037] Laser module cavity 11, used for installing LD laser module 40;

[0038] The optical lens cavity 12 is used to install the optical receiving lens 30 and the APD receiving board 50;

[0039] The housing is further provided with a clamping portion for positioning the PCBA board 20;

[0040] The clamping portion is used to secure the PCBA board 20 to the outer wall 121 of the optical lens cavity 12 facing the laser module cavity 11, such that the bottom of the PCBA board 20 is fixed to the rear end 70 of the laser module cavity 11 and the optical lens cavity 12, and the length of the PCBA board 20 is parallel to the depth of the laser module cavity 11 and the optical lens cavity 12. Alternatively, the clamping portion is used to attach the side wall of the PCBA board 20 to the side of the optical bracket 10. The optical receiving lens 30 and the APD receiving board 50 are electrically connected.

[0041] Among them, the PCBA board 20 is the control main board of the laser ranging sensor, and reference can be made to the laser ranging sensor in the prior art, which will not be described in detail here.

[0042] The front end 60 of the laser module cavity 11 is flush with the front end 60 of the optical lens cavity 12, so that after the LD laser module 40, the optical receiving lens 30, and the APD receiving board 50 are installed, the emission port of the LD laser module 40 and the receiving port of the optical receiving lens 30 are on the same plane.

[0043] The specific ranging solution of the laser ranging sensor can refer to the laser ranging in the prior art and will not be described in detail here.

[0044] Because the PCBA board 20 itself is very thin, the thickness of the optical bracket 10 is generally greater than that of the PCBA board 20, for example, 7 mm. When the PCBA board 20 is secured to the outer wall 121 of the optical lens cavity 12 facing the laser module cavity 11 via a snap-fitting portion, the bottom of the PCBA board 20 can be secured to the rear end 70 of the laser module cavity 11 and the optical lens cavity 12. Simultaneously, the length of the PCBA board 20 is parallel to the depth of the laser module cavity 11 and the optical lens cavity 12, ensuring that the thickness of the laser ranging sensor based on the optical bracket 10 is consistent with the thickness of the optical bracket 10 housing. When the sidewalls of the PCBA board 20 are attached to the side of the optical bracket 10 via the snap-fitting portion, the thickness of the laser ranging sensor based on the optical bracket 10 is the sum of the thicknesses of the optical bracket 10 and the PCBA board 20. This allows for miniaturization and microscaling of the laser ranging sensor, resulting in an ultra-thin design.

[0045] In some embodiments, the snap-fit portion may be a groove 13, and the bottom end of the PCBA board 20 may be L-shaped. The tail ends 70 of the laser module cavity 11 and the optical lens cavity 12 are arranged in a stepped manner. The groove 13 is provided on the outer wall 121 of the optical lens cavity 111 facing the laser module cavity 11. The width of the groove 13 corresponds to the thickness of the PCBA board 20, and the length of the groove 13 matches the length of the short side of the L-shape of the PCBA board 20. This allows the PCBA board 20 to be inserted into the groove 13 and fixed. The PCBA board 20 and the groove 13 are designed to fit tightly, so that the length direction of the PCBA board 20 remains parallel to the depth direction of the laser module cavity 11 and the optical lens cavity 12. This allows the thickness of the laser ranging sensor based on the optical bracket 10 to be consistent with the thickness of the optical bracket 10. Moreover, since the groove 13 is tightly fitted with the PCBA board 20, after the pins of the APD receiving board 50 and the LD laser module 40 corresponding to the PCBA board 20 are welded, the PCBA board 20 can be reliably fixed on the optical bracket 10 without the need for screwing and gluing, and the reliability is high. At the same time, the ultra-thin feature of the laser ranging sensor is realized.

[0046] In some embodiments, the laser module cavity 11 is cylindrical, and an extension line of the width direction x of the groove 13 toward the laser module cavity 11 does not pass through the center M of the circular cross section of the cylindrical laser module cavity 11 .

[0047] Specifically, since the shape of the LD laser module 40 is generally cylindrical, in order to accommodate the LD laser module 40, the shape of the laser module cavity 11 is also cylindrical. The LD laser module 40 has three pins 41, and the three pins 41 of the LD laser module 40 are not on the same plane. In order to solder the three pins of the LD laser module 40 to the laser pads 21 of the PCBA board 20 on the same plane, as shown in FIG. Figure 2 As shown, the groove 13 can be set at one-third of the y-axis direction of the optical lens cavity 12 toward the laser module cavity 11, so the extension line of the width direction x of the groove 13 toward the laser module cavity 11 does not pass through the center M of the cylindrical laser module cavity 11. In this way, when the PCBA board 20 is inserted into the groove 13, the three pins 41 of the LD laser module 40 will not be blocked, which facilitates the welding of the three pins 41 of the LD laser module 40 to the corresponding pads 21 of the PCBA board 20 on the same plane.

[0048] It can be understood that the setting of the groove 13 is not limited to being set at one-third of the y-axis direction of the optical lens cavity 12 toward the laser module cavity 11, but can also be one-quarter, etc., as long as it does not block the three pins 41 of the LD laser module 40, so as to facilitate the welding of the three pins 41 of the LD laser module 40 to the corresponding pads 21 of the PCBA board 20 on the same plane. The positions all fall within the simple deformation and transformation of this case and are not limited here.

[0049] When the LD laser module 40 is installed in the laser module cavity 11, the depth of the laser module cavity 11 is less than the length of the LD laser module 40, the inner diameter of the laser module cavity 11 is greater than the outer diameter of the LD laser module 40, and the tail end of the LD laser module 40 extends from the tail end 70 of the laser module cavity 11. The depth of the laser module cavity 11 is less than the length of the LD laser module 40, which allows the tail end of the LD laser module 40 to extend from the tail end 70 of the laser module cavity 11. In addition, because the inner diameter of the laser module cavity 11 is greater than the outer diameter of the LD laser module 40, the LD laser module 40 has room to move within the laser module cavity 11 and can be adjusted up, down, left, and right. After the pins 41 at the tail end of the LD laser module 40 are soldered to the pads 21 of the PCBA board 20, the optical axis of the LD laser module 40 can be easily adjusted and calibrated.

[0050] In some embodiments, the groove 13 is in the shape of a cuboid, and thus has a width, a depth, and a length to fit the shape of the short side of the bottom of the L-shaped PCBA board 20 .

[0051] In some embodiments, the clamping portion is a screw hole 14 , which passes through the housing. The housing and the PCBA board 20 are fixed by bolts passing through the screw hole 14 .

[0052] The PCBA board 20 can also be fixedly connected to the optical bracket 10 via bolts. Since the screw holes 14 extend through the housing, the PCBA board 20 can be bolted to the side wall of the optical bracket 10. In this case, the thickness of the laser ranging sensor is the sum of the thicknesses of the optical bracket 10 and the PCBA board 20. Of course, the PCBA board 20 also contains some electronic components, which have a certain height. Therefore, the thickness of the laser ranging sensor is at least 1mm-2mm greater than the sum of the thicknesses of the optical bracket 10 and the PCBA board 20. The bolts and screw holes 14 ensure that the PCBA board 20 is securely fixed to the side wall of the optical bracket 10, eliminating the need for gluing to secure the PCBA board 20 and the optical bracket.

[0053] It can be understood that when the PCBA board 20 is fixedly connected to the optical bracket 10 through the screw hole 14, the bottom shape of the PCBA board 20 is not limited to L-shaped, but can also be other shapes, as long as the pads 21 and pads 22 are exposed, so as to realize welding the pin 41 of the LD laser module 40 to the pad 21 of the PCBA board 20, and welding the solder point 51 of the APD receiving board 50 to the pad 22 of the PCBA board 20.

[0054] exist Figure 4 In the example, the LD laser module 40 has three pins 41, and the corresponding pads 21 also have three solder joints 51. The APD receiving board 50 has three solder joints 51, and the corresponding pads 22 on the PCBA board 20 also have three solder joints 22.

[0055] In some embodiments, a glue injection hole 15 is provided on the side wall of the laser module cavity 11. After the LD laser module 40 adjusts the optical axis in the laser module cavity 11, the glue injection hole 15 is used to inject glue to fix the LD laser module 40 in the laser module cavity 11.

[0056] Specifically, after the optical axis of the LD laser module 40 is calibrated, glue is injected into the glue injection hole 15 . After the glue dries, the outer wall of the LD laser module 40 is fixedly connected to the inner wall of the laser module cavity 11 .

[0057] The present application also provides a laser ranging sensor, comprising a PCBA board 20, an optical receiving lens 30, an LD laser module 40, an APD receiving board 50 and the optical bracket 10 as described above;

[0058] The optical bracket 10 includes an integrally formed housing, which is provided with a laser module cavity 11 and an optical lens cavity 12: the front end 60 of the laser module cavity 11 is flush with the front end 60 of the optical lens cavity 12;

[0059] Laser module cavity 11, used for installing LD laser module 40;

[0060] The optical lens cavity 12 is used to install the optical receiving lens 30;

[0061] The housing is also provided with a clamping portion for positioning the PCBA board 20;

[0062] The LD laser module 40 is disposed in the laser module cavity 11, the optical receiving lens 30 is disposed in the front portion of the optical lens cavity 12, the APD receiving board 50 is disposed in the rear portion 70 of the optical lens cavity 12, and the PCBA board 20 is fixed to the outer wall 121 of the optical lens cavity 12 facing the laser module cavity 11 by a clamping portion, and the length direction of the PCBA board 20 is parallel to the depth direction of the laser module cavity 11 and the optical lens cavity 12; or the clamping portion is used to attach the side wall of the PCBA board 20 to the side surface of the optical bracket 10;

[0063] The pins 41 of the LD laser module 40 are fixed by welding to the pads 21 of the PCBA board 20 corresponding to the LD laser module, and the APD receiving board 50 is fixed by welding to the pads 22 of the PCBA board 20 corresponding to the APD receiving board 50 .

[0064] The pin 41 of the LD laser module 40 and the pad 21 of the PCBA board 20, as well as the APD receiving board 50 and the pad 22 of the PCBA board 20 are fixed by welding. After welding, they have an electrical connection relationship, and the APD receiving board 50 is electrically connected to the optical receiving lens 30. Based on the LD laser module 40, the optical receiving lens 30, the APD receiving board 50 and the PCBA board 20, the ranging function of the laser ranging sensor is realized.

[0065] like Figure 4 As shown, the bottom end of the PCBA board 20 is L-shaped, which is adapted to the tail end 70 of the laser module cavity 11 and the optical lens cavity 12 which are arranged in a stepped manner. The clamping portion is a groove 13. The width of the groove 13 corresponds to the thickness of the PCBA board 20, and the length of the groove 13 is adapted to the length of the short side 23 of the L-shape of the PCBA board 20. The short side 23 of the L-shape of the PCBA board 20 is clamped in the groove 13, and the long side 24 of the L-shape of the PCBA board 20 is parallel to the APD receiving board 50, so that the thickness of the laser ranging sensor is equal to the thickness of the optical bracket 10.

[0066] In some embodiments, the depth of the laser module cavity 11 is less than the length of the LD laser module 40, and the inner diameter of the laser module cavity 11 is greater than the outer diameter of the LC laser module 40. The front end of the LD laser module 40 is mounted within the laser module cavity 11, and the rear end of the LD laser module 40 extends from the rear end of the laser module cavity 11. The rear end of the LD laser module 40 has a pin 41.

[0067] In some embodiments, the clamping portion is a screw hole 14, which passes through the shell of the optical bracket 10. After the shell and the PCBA board 20 are fixed by bolts passing through the screw hole 14, the pin 41 of the LD laser module 40 is welded and fixed to the solder pad 21 of the LD laser module 40 corresponding to the PCBA board 20, and the APD receiving board 50 is welded and fixed to the solder pad 22 of the APD receiving board 50 corresponding to the PCBA board 20.

[0068] At this time, since the optical bracket 10 and the PCBA board 20 are fixed together by bolts and screw holes 14, the PCBA board 20 is reliably fixed to the side of the optical bracket 10 without the need for gluing, and the thickness of the laser ranging sensor is at least 1mm-2mm greater than the sum of the thickness of the optical bracket 10 and the thickness of the PCBA board 20.

[0069] The optical bracket 10 and laser ranging sensor for laser ranging in the embodiment of the present application are installed with an LD laser module 40 in the laser module cavity 11 of the optical bracket 10, and an optical receiving lens 30 and an APD receiving board 50 in the optical lens cavity 12. The PCBA board 20 can be fixed to the outer wall 121 of the optical lens cavity 12 facing the laser module cavity 11, that is, located at the tail end 70 of the optical bracket 10, through the clamping portion of the shell, without occupying additional thickness, so that the thickness of the laser ranging sensor is consistent with the thickness of the optical bracket 10; or, through the clamping portion on the optical lens cavity 12, the side wall of the PCBA board 20 is attached to the side surface of the optical bracket 10, so that the thickness of the laser ranging sensor is the sum of the thickness of the optical bracket 10 and the thickness of the PCBA board 20. In this way, the thickness of the laser ranging sensor can be very small, thereby realizing the miniaturization and micro-miniaturization of the laser ranging sensor. Moreover, since the clamping portion can position the PCBA board 20 in the shell of the optical bracket 10, the fixation between the PCBA board 20 and the optical bracket 10 is more reliable, and the pin 41 of the LD laser module 40 can be welded and fixed to the laser pad 21 of the PCBA board 20, and the solder joint 51 of the APD receiving board 50 can be welded and fixed to the receiving solder joint 51 of the PCBA board 20. No additional fixing method is required, and the fixation between the PCBA board 20 and the optical bracket 10 will be more stable, thereby improving the reliability of the product.

[0070] The foregoing is merely a preferred embodiment of the present application. Those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present application. Furthermore, under the guidance of this application, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be included within the scope of protection of this application.

Claims

1. An optical bracket for laser ranging, characterized in that: The optical bracket for laser ranging includes an integrally formed housing, the housing being provided with a laser module cavity and an optical lens cavity, wherein the front end of the laser module cavity is flush with the front end of the optical lens cavity; The laser module cavity is used to install the LD laser module; The optical lens cavity is used to install the optical receiving lens and the APD receiving board; The housing is further provided with a clamping portion for positioning the PCBA board; The clamping portion is used to fix the PCBA board to the outer wall of the optical lens cavity facing the laser module cavity, so that the bottom of the PCBA board is fixed to the tail end of the laser module cavity and the optical lens cavity, and the length direction of the PCBA board is parallel to the depth direction of the laser module cavity and the optical lens cavity; or the clamping portion is used to fit the side wall of the PCBA board to the side of the shell.

2. The optical bracket for laser ranging according to claim 1, characterized in that: The tail ends of the laser module cavity and the optical lens cavity are arranged in a stepped manner, which are adapted to the bottom end of the L-shape of the PCBA board. The clamping portion is a groove, which is provided on the outer wall of the optical lens cavity facing the laser module cavity. The width of the groove corresponds to the thickness of the PCBA board, and the length of the groove is adapted to the length of the short side of the L-shape of the PCBA board.

3. The optical bracket for laser ranging according to claim 2, characterized in that: The laser module cavity is cylindrical in shape, and an extension line of the width direction of the groove toward the laser module cavity does not pass through the center of the circular cross section of the cylindrical laser module cavity.

4. The optical bracket for laser ranging according to claim 2, characterized in that: The groove is in the shape of a cuboid.

5. The optical bracket for laser ranging according to claim 1, characterized in that: The clamping portion is a screw hole that passes through the housing. The housing and the PCBA board are fixed by bolts passing through the screw hole.

6. The optical bracket for laser ranging according to claim 1, characterized in that: The side wall of the laser module cavity is provided with a glue injection hole, and after the LD laser module adjusts the optical axis in the laser module cavity, the glue injection hole is used to inject glue to fix the LD laser module in the laser module cavity.

7. A laser ranging sensor, characterized in that: It comprises a PCBA board, an optical receiving lens, an LD laser module, an APD receiving board and the optical bracket according to any one of claims 1 to 6; The optical bracket includes an integrally formed housing, the housing being provided with a laser module cavity and an optical lens cavity, wherein the front end of the laser module cavity is flush with the front end of the optical lens cavity; The laser module cavity is used to install the LD laser module; The optical lens cavity is used to install the optical receiving lens; The housing is further provided with a clamping portion for positioning the PCBA board; The LD laser module is arranged in the laser module cavity, the optical receiving lens is arranged in the front part of the optical lens cavity, the APD receiving board is arranged in the rear part of the optical lens cavity, and the PCBA board is fixed to the outer wall of the optical lens cavity facing the laser module cavity through the clamping portion, so that the bottom of the PCBA board is fixed to the rear end of the laser module cavity and the rear end of the optical lens cavity, and the length direction of the PCBA board is parallel to the depth direction of the laser module cavity and the depth direction of the optical lens cavity; or the PCBA board is fixed to the side of the housing through the clamping portion; The pins of the LD laser module are fixed by welding to the pads of the PCBA board corresponding to the LD laser module, and the APD receiving board is fixed by welding to the pads of the PCBA board corresponding to the APD receiving board.

8. The laser ranging sensor according to claim 7, characterized in that: The bottom end of the PCBA board is L-shaped, which is adapted to the tail ends of the laser module cavity and the optical lens cavity that are arranged in a stepped manner. The clamping portion is a groove, the width of the groove corresponds to the thickness of the PCBA board, and the length of the groove is adapted to the length of the short side of the L-shape of the PCBA board. The short side of the L-shape of the PCBA board is clamped in the groove, and the long side of the L-shape of the PCBA board is parallel to the APD receiving board, so that the thickness of the laser ranging sensor is equal to the thickness of the optical bracket.

9. The laser ranging sensor according to claim 7, characterized in that: The depth of the laser module cavity is smaller than the length of the LD laser module, and the inner diameter of the laser module cavity is larger than the outer diameter of the LD laser module; the front end of the LD laser module is installed in the laser module cavity, and the tail end of the LD laser module extends from the tail end of the laser module cavity.

10. The laser ranging sensor according to claim 7, characterized in that: The clamping portion is a screw hole, which passes through the shell. After the shell and the PCBA board are fixed by bolts passing through the screw holes, the pins of the LD laser module are welded and fixed to the pads of the PCBA board corresponding to the LD laser module, and the APD receiving board is welded and fixed to the pads of the PCBA board corresponding to the APD receiving board.

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