Detection light transceiver module and debugging method thereof

Abstract

The invention relates to the technical field of light detection, and provides a detection light transceiver module and a debugging method thereof. The probe light transceiving module comprises a shell, a transmitting module and a receiving module, and the transmitting module is mounted on the shell and used for transmitting probe light; the receiving module and the transmitting module are distributed in the third direction, the receiving module comprises a receiving reflector, a first lens and a receiving assembly which are sequentially distributed at intervals in the first direction, and the receiving assembly comprises a receiving mounting seat, a receiving lens group and a photoelectric detector; the receiving lens group and the photoelectric detection device are fixedly installed on the receiving installation seat at intervals in the first direction, and the receiving reflector and the first lens are fixedly installed on the shell. A worker only needs to adjust the position of the receiving assembly until the amplitude of the echo received by the photoelectric detector is the maximum, focusing of the receiving module is achieved, and the difficulty of assembling and adjusting work of the receiving and transmitting module is reduced.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a detection optical transceiver module and a debugging method thereof. Background Art

[0002] Silicon photo multiplier (SiPM) is a single-photon sensitive, high-performance solid-state sensor, which is formed by a summing array of closely arranged single-photon avalanche photodiode sensors and an integrated quenching resistor. It has the characteristics of high gain, high sensitivity, low bias voltage, insensitivity to magnetic fields, and compact structure.

[0003] In the SiPM system, sunlight has a huge impact on the system, and the field of view needs to be reduced to reduce the amount of sunlight entering. A small field of view corresponds to a long focal length. At the same time, the volume requirements of the laser radar detection light transceiver module are getting higher and higher. In order to increase the focal length within a limited volume, the receiving lens uses a telephoto lens. The receiving lens includes multiple lenses arranged in sequence along the direction of light propagation. The distance between the multiple lenses is difficult to adjust, which makes the existing detection light transceiver module difficult to adjust. Summary of the invention

[0004] The purpose of the present invention is to provide a detection light transceiver module and a debugging method thereof, aiming to solve the technical problem that the existing detection light transceiver module is difficult to assemble and adjust.

[0005] In a first aspect, the present application provides a detection light transceiver module, the detection light transceiver module comprising:

[0006] A shell, wherein the shell has a first direction, a second direction and a third direction which are perpendicular to each other;

[0007] A transmitting module, the transmitting module is installed in the housing, and the transmitting module is used to transmit detection light;

[0008] A receiving module, wherein the receiving module and the transmitting module are distributed along the third direction, the receiving module comprises a receiving reflector, a first lens and a receiving assembly which are sequentially spaced along the first direction, the receiving assembly comprises a receiving mounting seat, a receiving lens group and a photoelectric detection device, the receiving lens group and the photoelectric detection device are fixedly installed on the receiving mounting seat at intervals along the first direction, the receiving reflector and the first lens are fixedly installed on the housing, the first lens has a positive optical power, and the receiving reflector is used to receive the echo of the detection light reflected by the detection object, and send the echo to the photoelectric detection device through the first lens and the receiving lens group.

[0009] In one embodiment, the receiving lens group includes a second lens, the second lens has a negative optical power, and the second lens is mounted on the end of the receiving mount close to the first lens.

[0010] In one embodiment, the receiving lens group also includes a third lens, which is located on the side of the second lens away from the first lens, and the third lens has negative optical power, and the absolute value of the optical power of the third lens is smaller than the absolute value of the optical power of the second lens.

[0011] In one embodiment, the receiving mount is provided with a receiving aperture, and the second lens and the third lens are respectively against two ends of the receiving aperture.

[0012] In one embodiment, the receiving lens group includes a receiving filter lens, and the receiving filter lens is disposed adjacent to the photoelectric detection device.

[0013] In a second aspect, the present application provides a method for debugging a detection light transceiver module, which is applied to any of the detection light transceiver modules described above, and the method comprises the following steps:

[0014] Installing the transmitting module on the housing;

[0015] The receiving reflector and the first lens of the receiving module are installed on the housing at intervals along the first direction; wherein the receiving module and the transmitting module are distributed at intervals along the third direction;

[0016] The position of the receiving component of the receiving module is adjusted until the amplitude of the echo received by the photoelectric detection device of the receiving component is maximum.

[0017] In one embodiment, the step of adjusting the position of the receiving component of the receiving module is specifically:

[0018] The position of the receiving component is repeatedly adjusted in the first direction, the second direction and the third direction until the amplitude of the echo decreases by continuing to adjust the position of the receiving component in any one of the first direction, the second direction and the third direction.

[0019] In one embodiment, the step of adjusting the position of the receiving component of the receiving module specifically includes:

[0020] adjusting the position of the receiving component along the first direction until an echo is received at a preset position of the photoelectric detection device;

[0021] The position of the receiving component is adjusted along the second direction and the third direction respectively until the amplitude of the echo is maximum.

[0022] In one embodiment, the step of adjusting the position of the receiving component along the second direction and the third direction respectively is specifically:

[0023] adjusting the position of the receiving component along the second direction until the amplitude of the echo is maximum;

[0024] adjusting the position of the receiving component along the third direction until the amplitude of the echo is maximum;

[0025] The above steps are repeated until the amplitude of the echo decreases.

[0026] In one of the embodiments, when assembling the receiving assembly, the receiving lens group and the photoelectric detection device are fixedly mounted on the receiving mounting seat according to the simulation results.

[0027] The beneficial effects of the detection light transceiver module and the debugging method thereof provided by the present invention are as follows: the receiving lens group and the photoelectric detection device are fixedly installed on the receiving mounting seat at intervals, and the receiving assembly forms a whole. The staff only adjusts the position of the receiving assembly until the amplitude of the echo received by the photoelectric detection device is maximized, thereby achieving the focusing of the receiving module without the need to additionally adjust the position of the receiving lens group and the photoelectric detection device, thereby solving the technical problem of the difficulty of assembling and adjusting the existing detection light transceiver module, thereby reducing the difficulty of assembling and adjusting the detection light transceiver module. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A schematic diagram of the structure of a detection light transceiver module provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of the detection light transceiver module provided in an embodiment of the present invention with the cover plate removed;

[0031] Figure 3 for Figure 2 Another perspective view of the detection light transceiver module;

[0032] Figure 4 for Figure 3 A cross-sectional view of the detection light transceiver module;

[0033] Figure 5 A schematic diagram of the structure of a mounting base for a detection light transceiver module provided in an embodiment;

[0034] Figure 6 A schematic diagram of the structure of a spherical cylindrical lens and a fixing block of a transmitting module of a detection light transceiver module provided in an embodiment;

[0035] Figure 7 An exploded view of the spherocylindrical lens and the fixing block;

[0036] Figure 8 A schematic flow chart of a debugging method for a detection light transceiver module provided in an embodiment of the present invention.

[0037] Among them, the reference numerals in the figure are:

[0038] X, first direction; Y, second direction; Z, third direction;

[0039] 100, housing; 101, mounting seat; 102, cover plate; 103, first light hole; 104, emission channel; 111, first mounting slot; 112, first adjustment recess; 113, second mounting slot; 114, second adjustment recess; 115, third mounting slot; 116, third adjustment recess; 117, fourth mounting slot; 118, fourth adjustment recess; 119, fifth mounting slot; 120, fifth adjustment recess;

[0040] 200, transmitting module; 210, transmitting reflector; 220, laser; 230, spherical cylindrical lens; 240, fixing block; 241, second optical hole; 242, sixth mounting groove; 243, sixth adjustment recess; 250, fourth lens;

[0041] 300, receiving module; 310, receiving reflector; 320, first lens; 330, receiving assembly; 331, receiving mounting seat; 332, receiving lens group; 3321, second lens; 3322, third lens; 3323, receiving aperture; 3324, receiving filter lens; 333, photoelectric detection device. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0044] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] For the detection light transceiver module, the external ambient light (sunlight, lights) has a huge impact on the system, and the field of view angle needs to be reduced to reduce the amount of ambient light entering. A small field of view corresponds to a long focal length. At the same time, the detection light transceiver module requires a small size and is easy to install. In order to increase the focal length within a limited volume, the receiving lens uses a telephoto lens. The receiving lens includes multiple lenses arranged in sequence along the direction of light propagation. The distance accuracy between the multiple lenses is required to be high, which makes the installation and adjustment of the detection light transceiver module difficult.

[0048] To this end, this embodiment provides a detection optical transceiver module and a debugging method thereof.

[0049] Embodiment 1

[0050] Combination Figures 1 to 3The detection light transceiver module includes a housing 100, a transmitting module 200 and a receiving module 300. The housing 100 has a first direction X, a second direction Y and a third direction Z which are perpendicular to each other. The transmitting module 200 is installed in the housing 100 and is used to transmit the detection light.

[0051] The receiving module 300 and the transmitting module 200 are distributed along the third direction Z. The receiving module 300 includes a receiving reflector 310, a first lens 320 and a receiving assembly 330 which are sequentially spaced along the first direction X. The receiving assembly 330 includes a receiving mounting seat 331, a receiving lens group 332 and a photoelectric detection device 333. The receiving lens group 332 and the photoelectric detection device 333 are fixedly installed on the receiving mounting seat 331 at intervals along the first direction X, and the receiving reflector 310 and the first lens 320 are fixedly installed on the housing 100. The receiving reflector 310 is used to receive the echo reflected by the detection light from the detection object, and send the echo to the photoelectric detection device 333 through the first lens 320 and the receiving lens group 332. The first lens 320 has a positive optical power, which can converge the detection echo, so that the echo can converge into the receiving assembly 330, reduce the distance between the first lens 320 and the receiving assembly 330, effectively reduce the size and volume of the receiving assembly 330, and facilitate the installation of the detection light transceiver module.

[0052] Among them, the receiving lens group 332 and the photoelectric detection device 333 are fixedly installed on the receiving mounting seat 331 at intervals, and the receiving component 330 constitutes a whole. The staff only needs to adjust the overall position of the receiving component 330 until the amplitude of the echo received by the photoelectric detection device 333 is the largest, that is, the received echo signal strength is the highest, which can provide a higher signal-to-noise ratio, provide more accurate detection results and higher resolution, and complete the installation and adjustment of the receiving module 300. Therefore, when the detection light receiving module provided in this embodiment is installed and adjusted, it is only necessary to adjust the position of the receiving component 330 as a whole, and there is no need to adjust the positions of the receiving lens group 332 and the photoelectric detection device 333 separately, which greatly reduces the number of adjustment objects, and there is no need to consider the distance matching relationship between multiple adjustment objects, thereby reducing the difficulty of installing and adjusting the detection light transceiver module.

[0053] In some embodiments, the angle between the receiving reflector 310 and the first direction X is 45°. The receiving reflector 310 is a semi-transparent and semi-reflective mirror.

[0054] In some embodiments, in combination Figure 4The receiving lens group 332 includes a second lens 3321. The second lens 3321 has a negative optical power and is mounted on the end of the receiving mounting seat 331 close to the first lens 320. The second lens 3321 with a negative optical power diverges the detection echo passing through the first lens 320 and straightens the converging detection echo, so that the detection echo can continue to propagate in a relatively parallel manner.

[0055] Specifically, the absolute value of the focal length of the first lens 320 is greater than the absolute value of the focal length of the second lens 3321, that is, the detection echo converges first and then diverges, but the degree of convergence is greater than the degree of divergence, and the detection echo has an overall convergence effect after passing through the first lens 320 and the second lens 3321. The second lens 3321 with negative focal length helps to reduce the aberration generated by the first lens 320, and is conducive to forming an image with clear point cloud, sharp spot edge, and high spot uniformity.

[0056] Specifically, there is an air space between the first lens 320 and the second lens 3321, and the air space is used to correct the aberration of the detection echo.

[0057] In one embodiment, in combination Figure 4 The receiving lens group 332 further includes a third lens 3322. The third lens 3322 is located on a side of the second lens 3321 away from the first lens 320. The third lens 3322 has a negative focal length, and the absolute value of the focal length of the third lens 3322 is smaller than the absolute value of the focal length of the second lens 3321. The third lens 3322 further aligns the detection echo passing through the second lens 3321.

[0058] If only a second lens 3321 with negative optical power is used, the same echo straightening effect cannot be achieved, and a single lens with large negative optical power has large imaging distortion. The second lens 3321 and the third lens 3322 are used to gradually straighten the detection echoes that have converged through the first lens 320, with small imaging distortion and good straightening effect. Among them, the first lens 320 has positive optical power, which can reduce the aperture of the detection echo. The second lens 3321 and the third lens 3322 have negative optical power, which gradually diverge the detection echo, balance the positive spherical aberration generated by the positive lens, achieve the straightening effect, and the divergence degree is gradually reduced.

[0059] In addition, the combination of the first lens 320, the second lens 3321 and the third lens 3322 can effectively increase the focal length.

[0060] Specifically, combined Figure 4 The receiving mounting seat 331 is provided with a receiving aperture 3323, which serves to reduce stray light, better control the incident angle of the detection echo, and reduce the deviation of the detection echo that may cause scattering, reflection or light loss.

[0061] Optionally, the second lens 3321 and the third lens 3322 are respectively abutted against the two ends of the receiving aperture 3323. On the one hand, the installation positioning of the second lens 3321 and the third lens 3322 can be realized, so as to accurately control the installation positions of the second lens 3321 and the third lens 3322 without adjusting the positions of the second lens 3321 and the third lens 3322, thereby accurately controlling the transmission path of the detection echo and improving the alignment accuracy and stability of the detection light transceiver module; on the other hand, the chance of diffraction and scattering of the detection echo at the edges of the second lens 3321 and the third lens 3322 can be reduced, thereby reducing the edge effects that may cause image quality degradation and improving the resolution and imaging quality of the detection light transceiver module.

[0062] In some embodiments, in combination Figure 4 The receiving lens group 332 includes a receiving filter lens 3324, and the receiving filter lens 3324 is arranged adjacent to the photoelectric detection device 333. The receiving filter lens 3324 is used to filter out interference light in a non-working band, eliminate interference from natural light, and improve detection accuracy.

[0063] Optionally, the receiving filter lens 3324 is a filter, and different passbands are selected according to the wavelength of the detection light.

[0064] In one embodiment, the photodetector device 333 may be a device capable of converting an optical signal into an electrical signal, such as a silicon photomultiplier tube, a photodiode, a photon counter, a fast charge coupled device, or a complementary metal oxide semiconductor.

[0065] In some embodiments, in combination Figure 2 The transmitting module 200 includes a transmitting reflector 210 and a laser 220 which are sequentially arranged along the first direction X. The detection light emitted by the laser 220 is emitted outward through the transmitting reflector 210 and is reflected back to the receiving module 300 after encountering the detection target.

[0066] Specifically, the angle between the emitting reflector 210 and the first direction X is 45°. The emitting reflector 210 is a semi-transparent and semi-reflective mirror.

[0067] Specifically, the transmitting reflector 210 and the receiving reflector 310 are spaced apart along the third direction Z, and the transmitting reflector 210 and the receiving reflector 310 have the same position in the first direction X and the same position in the second direction Y, so that the position of the transmitting reflector 210 can be determined quickly and accurately, simplifying the installation and adjustment operation.

[0068] The laser 220 may be a fixed laser, a gas laser or a semiconductor laser.

[0069] In one embodiment, in combination Figure 3The transmitting module 200 further includes a spherocylinder lens 230, which is located between the transmitting reflector 210 and the laser 220. The spherocylinder lens 230 is used to shape the detection light generated by the laser 220 and can also be used to correct aberrations.

[0070] Specifically, combined Figure 4 The transmitting module 200 further includes a fourth lens 250, which is located between the sphero-cylindrical lens 230 and the transmitting reflector 210. The laser emitted by the laser 220 is fast-axis compressed by the sphero-cylindrical lens 230, collimated by the fourth lens 250, and then emitted to the transmitting reflector 210.

[0071] In one embodiment, in combination Figure 4 and Figure 5 The housing 100 has an emission channel 104, a laser 220 is located at one end of the emission channel 104, and an emission reflector 210 is located at the other end of the emission channel 104. The emission channel 104 has a first light hole 103 at the end close to the laser 220. The detection light emitted by the laser 220 enters the emission channel 104 through the first light hole 103, is shaped into a parallel light beam in the emission channel 104, and then leaves the emission channel 104 through the other end of the emission channel 104 and enters the emission reflector 210 to be reflected toward the target object. The emission channel 104 can reduce stray light.

[0072] Specifically, the spherical cylindrical lens 230 and the fourth lens 250 are installed in the emission channel 104, the spherical cylindrical lens 230 is located at one end of the emission channel 104 close to the laser 220, and the fourth lens 250 is located at one end of the emission channel 104 close to the emission reflector 210. In this way, the positions of the spherical cylindrical lens 230 and the fourth lens 250 are accurately positioned by the emission channel 104, reducing the difficulty of assembling and adjusting the spherical cylindrical lens 230 and the fourth lens 250.

[0073] In some embodiments, in combination Figure 4 and Figure 5 The material of the housing 100 can be metal, ceramic or plastic, which is not specifically limited here. Specifically, the housing 100 is a metal shell, which is conducive to signal shielding and prevents external interference signals from affecting internal radio frequency signal transmission.

[0074] In some embodiments, in combination Figure 1, the housing 100 can be manufactured in separate parts. For example, the housing 100 includes a mounting seat 101 and a cover plate 102, and the cover plate 102 is detachably mounted on the mounting seat 101. The cover plate 102 and the mounting seat 101 enclose a space for mounting the transmitting module 200 and the receiving module 300. The transmitting module 200 and the receiving module 300 are first installed in the mounting seat 101, and the cover plate 102 is then assembled on the mounting seat 101 to protect the transmitting module 200 and the receiving module 300. The cover plate 102 is connected to the mounting seat 101 during assembly, and is not connected to the transmitting module 200 and the receiving module 300, so as to ensure the stability of the position of the transmitting module 200 and the receiving module 300 and avoid re-adjustment due to position deviation.

[0075] In one embodiment, in combination Figure 4 and Figure 5 The housing 100 is provided with a first mounting groove 111, and the receiving reflector 310 is embedded in the first mounting groove 111, that is, the receiving reflector 310 does not need to be fixed with other fixing devices and fasteners, which reduces the number of parts, simplifies the assembly process, reduces the assembly time, and improves the assembly efficiency. The first mounting groove 111 can accurately locate the installation position of the receiving reflector 310, reducing the difficulty of installing and adjusting the receiving reflector 310. Optionally, the first mounting groove 111 is located at the mounting seat 101.

[0076] Specifically, the interior of the shell 100 has two first protrusions arranged opposite to each other, and a first groove is provided on the surface of the first protrusion facing the other first protrusion. The first groove and the interval between the two first protrusions are combined to form the first mounting groove 111, which is used to achieve the upper limit positioning of the receiving reflector 310 in its thickness direction and circumferential direction, so that the position of the receiving reflector 310 is stable and reliable.

[0077] Specifically, the bottom of the first mounting groove 111 is provided with a first adjustment recess 112, and the first adjustment recess 112 is used to contain glue so that the receiving reflector 310 is bonded and fixed to the first mounting groove 111. In addition, the first adjustment recess 112 can also be used to accurately add a preset mass of glue to achieve force balance and dynamic balance of the receiving reflector 310. For example, according to the dynamic balance calculation result, a mass of 0.5 g needs to be configured, and then 0.5 g of glue can be accurately added to the first adjustment recess 112 to achieve accurate mass modulation.

[0078] Optionally, the number of the first adjustment recesses 112 is more than two, and the more than two first adjustment recesses 112 are arranged at intervals around the circumference of the first mounting groove 111. Figure 5In the illustrated embodiment, there are four first adjustment recesses 112, and the four first adjustment recesses 112 are located at the four corners of the first mounting groove 111. Two of the first adjustment recesses 112 are located at one end of the first mounting groove 111, and are arranged opposite to each other to balance the torque, and jointly apply a lateral fixing force to the receiving reflector 310 located in the first mounting groove 111. The other two first adjustment recesses 112 are located at the other end of the first mounting groove 111, and are arranged in the same direction along the thickness direction of the first mounting groove 111, and jointly apply pressure to the receiving reflector 310 located in the first mounting groove 111, so as to fix the receiving reflector 310 in the thickness direction.

[0079] In one embodiment, in combination Figure 4 and Figure 5 The housing 100 is provided with a second mounting groove 113 , and the first lens 320 is embedded in the second mounting groove 113 , which reduces the assembly time and the difficulty of adjusting the first lens 320 .

[0080] Optionally, the second mounting groove 113 is located on the mounting seat 101 .

[0081] Specifically, the interior of the shell 100 has two second protrusions arranged opposite to each other, and a second groove is provided on the surface of the second protrusion facing the other second protrusion. The second groove and the interval between the two second protrusions are combined to form the second mounting groove 113, which is used to realize the upper limit positioning of the first lens 320 in its thickness direction and circumferential direction, so that the position of the first lens 320 is stable and reliable.

[0082] Specifically, the bottom of the second mounting groove 113 is provided with a second adjustment recess 114, and the second adjustment recess 114 is used to contain glue so that the first lens 320 is bonded and fixed to the second mounting groove 113. In addition, the second adjustment recess 114 can also be used to accurately add a preset amount of glue to balance the force and dynamic balance of the first lens 320. Optionally, the number of the second adjustment recess 114 is more than two, and the more than two second adjustment recesses 114 are arranged at intervals around the circumference of the second mounting groove 113. For example, Figure 5 In the illustrated embodiment, there are four second adjustment recesses 114 , which are located at four corners of the second mounting slot 113 and are arranged opposite to each other in pairs to balance the torque.

[0083] In one embodiment, in combination Figure 4 and Figure 5 The housing 100 is provided with a third mounting groove 115 , and the emitting reflector 210 is embedded in the third mounting groove 115 , which reduces the assembly time and the difficulty of installing and adjusting the emitting reflector 210 .

[0084] Optionally, the third mounting groove 115 is located on the mounting seat 101 .

[0085] Specifically, the interior of the shell 100 has two third protrusions arranged opposite to each other, and a third groove is provided on the surface of the third protrusion facing the other third protrusion. The third groove and the interval between the two third protrusions are combined to form the third mounting groove 115, which is used to realize the upper limit positioning of the emitting reflector 210 in its thickness direction and circumferential direction, so that the position of the emitting reflector 210 is stable and reliable.

[0086] Specifically, the bottom of the third mounting groove 115 is provided with a third adjustment recess 116, and the third adjustment recess 116 is used to contain glue so that the emitting reflector 210 is bonded and fixed to the third mounting groove 115. In addition, the third adjustment recess 116 can also be used to accurately add a preset mass of glue to balance the force and dynamic balance of the receiving reflector 310.

[0087] Optionally, the number of the third adjustment recesses 116 is more than two, and the more than two third adjustment recesses 116 are arranged at intervals in the circumferential direction around the third installation groove 115 .

[0088] In one embodiment, in combination Figure 4 and Figure 5 The housing 100 is provided with a fourth mounting groove 117, and the fourth lens 250 is embedded in the fourth mounting groove 117, which shortens the assembly time and reduces the difficulty of installation and adjustment.

[0089] Optionally, the fourth mounting groove 117 is located on the mounting seat 101 .

[0090] Specifically, the interior of the shell 100 has two fourth protrusions arranged opposite to each other, and a fourth groove is provided on the surface of the fourth protrusion facing the other fourth protrusion. The fourth groove and the interval between the two fourth protrusions are combined to form the fourth mounting groove 117, which is used to realize the upper limit positioning of the fourth lens 250 in its thickness direction and circumferential direction, so that the position of the fourth lens 250 is stable and reliable.

[0091] Specifically, a fourth adjustment recess 118 is provided at the bottom of the fourth mounting groove 117, and the fourth adjustment recess 118 is used to contain glue so that the fourth lens 250 is bonded and fixed to the fourth mounting groove 117. In addition, the fourth adjustment recess 118 can also be used to accurately add glue of a preset mass to balance the force and dynamic balance of the fourth lens 250.

[0092] Optionally, the number of the fourth adjustment recesses 118 is more than two, and the more than two fourth adjustment recesses 118 are arranged at intervals around the circumference of the fourth mounting groove 117. Figure 5In the illustrated embodiment, there are four fourth adjustment recesses 118, which are located at the four corners of the first mounting groove 111, two of which are located at one end of the fourth mounting groove 117 and are arranged opposite to each other, and the other two fourth adjustment recesses 118 are located at the other end of the fourth mounting groove 117 and are arranged opposite to each other, so that the force on the fourth lens 250 is balanced.

[0093] In some embodiments, in combination Figure 4 and Figure 5 The transmitting module 200 further includes a fixing block 240, the spherical cylindrical lens 230 is mounted on the fixing block 240, and the fixing block 240 is mounted on the housing 100. The spherical cylindrical lens 230 is assembled to the housing 100 through the fixing block 240 of a larger size, so that the assembly between the fixing block 240 and the housing 100 is easy to implement, reducing the difficulty of assembly.

[0094] In one embodiment, the housing 100 is provided with a fifth mounting groove 119, and the fixing block 240 is embedded in the fifth mounting groove 119, that is, the fixing block 240 does not need to be fixed with other fixing devices and fasteners, which reduces the assembly time and reduces the difficulty of installation and adjustment. Optionally, the fifth mounting groove 119 is located on the mounting seat 101.

[0095] Specifically, the interior of the shell 100 has two fifth protrusions arranged opposite to each other, and a fifth groove is provided on the surface of the fifth protrusion facing the other fifth protrusion. The fifth groove and the interval between the two fifth protrusions are combined to form the fifth mounting groove 119, which is used to realize the upper limit positioning of the fixing block 240 in its thickness direction and circumferential direction, so that the position of the fixing block 240 is stable and reliable.

[0096] Specifically, a fifth adjustment recess 120 is provided at the bottom of the fifth mounting groove 119, and the fifth adjustment recess 120 is used to contain glue so that the fixing block 240 is bonded and fixed to the fifth mounting groove 119. In addition, the fifth adjustment recess 120 can also be used to accurately add a preset quality of glue to balance the force and dynamic balance of the fixing block 240.

[0097] Optionally, the number of the fifth adjustment recesses 120 is more than two, and the more than two fifth adjustment recesses 120 are arranged at intervals around the circumference of the fifth mounting groove 119. Figure 5In the illustrated embodiment, there are four fifth adjustment recesses 120, and the four fifth adjustment recesses 120 are located at the four corners of the fifth mounting groove 119. Two of the fifth adjustment recesses 120 are located at one end of the fifth mounting groove 119, and are arranged opposite to each other to balance the moment, and jointly apply a lateral fixing force to the fixing block 240 located in the fifth mounting groove 119. The other two fifth adjustment recesses 120 are located at the other end of the fifth mounting groove 119, and are arranged in the same direction along the thickness direction of the fifth mounting groove 119, and jointly apply pressure to the fixing block 240 located in the fifth mounting groove 119, so as to fix the fixing block 240 in the thickness direction.

[0098] In one embodiment, in combination Figure 6 and Figure 7 The fixed block 240 has a second light hole 241 , and the position of the second light hole 241 corresponds to the first light hole 103 , so that the detection light emitted by the laser 220 is incident on the spherical cylindrical lens 230 through the first light hole 103 and the second light hole 241 .

[0099] In one embodiment, in combination Figure 6 and Figure 7 The fixing block 240 is provided with a sixth mounting groove 242, and the spherical cylindrical lens 230 is embedded in the sixth mounting groove 242, that is, the spherical cylindrical lens 230 does not need to be fixed with other fixing devices and fasteners, which reduces the assembly time and reduces the difficulty of installation and adjustment. Optionally, the sixth mounting groove 242 is located in the mounting seat 101.

[0100] Specifically, the bottom of the sixth mounting groove 242 is provided with a sixth adjustment recess 243, and the sixth adjustment recess 243 is used to contain glue so that the spherical cylindrical lens 230 is bonded and fixed to the sixth mounting groove 242. In addition, the sixth adjustment recess 243 can also be used to accurately add a preset quality of glue to balance the force and dynamic balance of the spherical cylindrical lens 230.

[0101] Optionally, the number of the sixth adjustment recesses 243 is more than two, and the more than two sixth adjustment recesses 243 are arranged at circumferential intervals around the sixth installation groove 242 .

[0102] Embodiment 2

[0103] Combination Figure 8 The present application provides a debugging method for a detection optical transceiver module, which is applied to any one of the detection optical transceiver modules in the first embodiment, and the method comprises the following steps:

[0104] S100 : Install the transmitting module 200 on the housing 100 .

[0105] S200 : installing the receiving reflector 310 and the first lens 320 of the receiving module 300 on the housing 100 at intervals along the first direction X; wherein the receiving module 300 and the transmitting module 200 are distributed at intervals along the third direction Z.

[0106] S300: Adjust the position of the receiving component 330 of the receiving module 300 until the amplitude of the echo received by the photoelectric detection device 333 of the receiving component 330 is maximum.

[0107] Combination Figure 1 and Figure 2 The staff only needs to adjust the overall position of the receiving component 330 until the amplitude of the echo received by the photoelectric detection device 333 is the largest, that is, the received echo signal strength is the highest, which can provide a higher signal-to-noise ratio, provide more accurate detection results and higher resolution, and complete the installation and adjustment of the receiving module 300. There is no need to adjust the positions of the receiving lens group 332 and the photoelectric detection device 333 separately, which greatly reduces the number of adjustment objects and does not need to consider the distance matching relationship between multiple adjustment objects, thereby reducing the difficulty of installation and adjustment of the detection light transceiver module.

[0108] In one embodiment, step S300 is specifically:

[0109] S310: repeatedly adjusting the position of the receiving component 330 in the first direction X, the second direction Y, and the third direction Z, until the amplitude of the echo decreases while continuing to adjust the position of the receiving component 330 in any of the first direction X, the second direction Y, and the third direction Z. In other words, when the receiving component 330 is adjusted to a certain position, the amplitude of the echo will decrease regardless of moving in the first direction X, the second direction Y, or the third direction Z, indicating that the position of the receiving component 330 is adjusted completely, and the position is the target position, so that according to the feature of judging the decrease of the echo, it is possible to quickly determine whether the receiving component 330 is adjusted in place, which is conducive to quickly completing the adjustment operation.

[0110] In one embodiment, step S300 specifically includes:

[0111] S320: Adjust the position of the receiving component 330 along the first direction X until the preset position of the photoelectric detection device 333 receives the echo. The receiving component 330 is focused along the first direction X until the photoelectric detection device 333 receives the light spot, and the light spot is located at the preset position, generally at the exact center, indicating that the receiving module 300 and the transmitting module 200 are coaxial, and the focusing operation is completed.

[0112] S330: Adjust the position of the receiving component 330 along the second direction Y and the third direction Z respectively until the amplitude of the echo is the largest. The receiving component 330 performs amplitude modulation in the second direction Y and the third direction Z until the amplitude of the echo is the largest.

[0113] In this embodiment, the debugging method first adjusts the receiving component 330 in the first direction X to perform a focusing operation, and then adjusts the receiving component 330 in the second direction Y and the third direction Z to perform an amplitude modulation operation. By dividing the steps and directions, the adjustment of the receiving component 330 is orderly and easy to implement, thereby reducing the difficulty of installation and adjustment.

[0114] Specifically, step S330 is as follows:

[0115] S331: Adjust the position of the receiving component 330 along the second direction Y until the amplitude of the echo is maximum.

[0116] S332: Adjust the position of the receiving component 330 along the third direction Z until the amplitude of the echo is maximum.

[0117] S333: Repeat the above steps until the amplitude of the echo decreases.

[0118] In this embodiment, the debugging method further refines the amplitude modulation operation of the receiving component 330, so that the amplitude modulation operation is more orderly and easy to implement, and the difficulty of installation and adjustment is further reduced. Specifically, after the focusing operation is completed, the receiving component 330 is adjusted in the second direction Y to achieve the maximum amplitude of the echo, that is, the amplitude will decrease if the receiving component 330 continues to move or retreat in the second direction Y; then the receiving component 330 is adjusted in the third direction Z to achieve the maximum amplitude of the echo, and then the receiving component 330 is adjusted in the second direction Y again to achieve the maximum amplitude of the echo, and then the receiving component 330 is adjusted in the third direction Z to achieve the maximum amplitude of the echo, and so on and so forth, until the receiving component 330 continues to move or retreat in the second direction Y or the third direction Z, and the amplitude will decrease, indicating that the echo amplitude obtained by the receiving component 330 is the maximum at this time, and the adjustment is completed.

[0119] Specifically, step S333 is as follows: repeating step S331 and step S332 until the amplitude of the echo decreases, or step S331 and step S332 have been repeated for a preset number of times, and the position adjustment of the receiving component 330 ends. To avoid endlessly repeating step S331 and step S332, the cycle is stopped by setting a preset number of times, thereby reducing the adjustment time and difficulty. At this time, the amplitude of the echo is relatively large, meeting the use requirements.

[0120] Optionally, the preset number of times is 3 to 5 times.

[0121] In one embodiment, when assembling the receiving assembly 330, the receiving lens group 332 and the photoelectric detection device 333 are fixedly mounted on the receiving mounting seat 331 according to the simulation results, so that the positions of the receiving lens group 332 and the photoelectric detection device 333 are relatively accurate and reasonable, which is conducive to the reception of echoes.

[0122] In addition, the debugging method in the second embodiment also includes any one of the detection light transceiver modules in the first embodiment, which will not be described one by one here.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection light transceiver module, characterized in that: The detection light transceiver module comprises: A shell, wherein the shell has a first direction, a second direction and a third direction which are perpendicular to each other; A transmitting module, the transmitting module is installed in the housing, and the transmitting module is used to transmit detection light; A receiving module, wherein the receiving module and the transmitting module are distributed along the third direction, the receiving module comprises a receiving reflector, a first lens and a receiving assembly which are sequentially spaced along the first direction, the receiving assembly comprises a receiving mounting seat, a receiving lens group and a photoelectric detection device, the receiving lens group and the photoelectric detection device are fixedly installed on the receiving mounting seat at intervals along the first direction, the receiving reflector and the first lens are fixedly installed on the housing, the first lens has a positive optical power, and the receiving reflector is used to receive the echo of the detection light reflected by the detection object, and send the echo to the photoelectric detection device through the first lens and the receiving lens group.

2. The detection light transceiver module according to claim 1, characterized in that: The receiving lens group includes a second lens, the second lens has a negative optical power, and the second lens is mounted on the end of the receiving mounting seat close to the first lens.

3. The detection light transceiver module according to claim 2, characterized in that: The receiving lens group also includes a third lens, which is located on a side of the second lens away from the first lens, and has negative optical power. The absolute value of the optical power of the third lens is smaller than the absolute value of the optical power of the second lens.

4. The detection light transceiver module according to claim 3, characterized in that: The receiving mounting seat is provided with a receiving aperture, and the second lens and the third lens are respectively against two ends of the receiving aperture.

5. The detection light transceiver module according to any one of claims 1 to 4, characterized in that: The receiving lens group includes a receiving filter lens, and the receiving filter lens is arranged adjacent to the photoelectric detection device.

6. A debugging method for a detection light transceiver module, applied to the detection light transceiver module according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: Installing the transmitting module on the housing; The receiving reflector and the first lens of the receiving module are installed on the housing at intervals along the first direction; wherein the receiving module and the transmitting module are distributed at intervals along the third direction; The position of the receiving component of the receiving module is adjusted until the amplitude of the echo received by the photoelectric detection device of the receiving component is maximum.

7. The debugging method of the detection light transceiver module according to claim 6, characterized in that: The step of adjusting the position of the receiving component of the receiving module is specifically: The position of the receiving component is repeatedly adjusted in the first direction, the second direction and the third direction until the amplitude of the echo decreases by continuing to adjust the position of the receiving component in any one of the first direction, the second direction and the third direction.

8. The debugging method of the detection light transceiver module according to claim 6, characterized in that: The step of adjusting the position of the receiving component of the receiving module specifically includes: adjusting the position of the receiving component along the first direction until an echo is received at a preset position of the photoelectric detection device; The position of the receiving component is adjusted along the second direction and the third direction respectively until the amplitude of the echo is maximum.

9. The debugging method of the detection light transceiver module according to claim 8, characterized in that: The steps of adjusting the position of the receiving component along the second direction and the third direction respectively are specifically: adjusting the position of the receiving component along the second direction until the amplitude of the echo is maximum; adjusting the position of the receiving component along the third direction until the amplitude of the echo is maximum; The above steps are repeated until the amplitude of the echo decreases.

10. The debugging method of the detection light transceiver module according to any one of claims 6 to 9, characterized in that: When assembling the receiving assembly, the receiving lens group and the photoelectric detection device are fixedly mounted on the receiving mounting seat according to the simulation results.

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