Laser directivity adjusting module, adjusting method and double-cut light device

Abstract

The application relates to the technical field of lasers, in particular to a laser directivity adjusting module, an adjusting method and a double-cut light device, which comprises a mounting base provided with a first concave cavity and a first through hole, a laser seat comprising a sleeve and a convex edge, the convex edge being attached to the mounting base, a gasket forming an adjusting gap with the mounting base under the support of the convex edge, an adjusting bolt being arranged around the laser seat, and a nut extruding the local part of the convex edge through the gasket; the convex edge is deformed under the extrusion, the sleeve is tilted under the influence of the deformation of the convex edge, and the internal laser module is synchronously tilted to realize spot directivity adjustment. Through the application, the problems that the laser beam directivity deviation and the spot deviation from the preset position are caused by the machining tolerance of parts, the assembly cumulative error and the fastening stress are effectively solved, laser spot directivity adjustment is realized, and the laser directivity precision and the adjusting stability are improved.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and in particular to a laser directivity adjustment module, adjustment method, and dual-splitter device. Background Technology

[0002] In existing laser equipment, after the laser module is assembled and fixed to the equipment housing, the laser beam is prone to directional deviation due to factors such as the machining tolerance of parts, cumulative assembly errors, or fastener locking stress. This deviation will cause the beam projection angle to shift and the actual spot to deviate from the preset position. Summary of the Invention

[0003] This invention provides a laser directivity adjustment module, adjustment method, and dual-splitter device, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The laser pointing adjustment module includes: The mounting base is provided with a through hole; The laser module is fitted to the mounting base on one side, and the emitted laser enters and exits through the first hole. The laser mount includes a sleeve fitted around the periphery of the laser module, and a protruding edge extending outward from one end of the sleeve, the protruding edge being in contact with the mounting base; A gasket is fitted around the sleeve and fits against the flange. Under the support of the flange, the gasket forms an adjustable gap with the mounting base. A plurality of adjusting bolts are arranged around the laser base, the bolts of the adjusting bolts passing through the washer and threadedly connected to the mounting base through the adjusting gap, and the nuts pressing a portion of the protruding edge through the washer; The protrusion deforms under compression, and the sleeve tilts under the influence of the deformation of the protrusion, which in turn causes the internal laser module to tilt synchronously to achieve beam direction adjustment.

[0005] Furthermore, the sleeve is provided with a second cavity, and the other side of the laser module is embedded in the second cavity; The outer wall of the laser module is spaced apart from the inner wall of the second cavity, and both ends of the laser module are pressed and fitted against the bottom surface of the mounting base and the second cavity, respectively.

[0006] Furthermore, including: A calibration board is provided, wherein an array matrix of several photoelectric receiving units is provided on the calibration board; The laser module is controlled to start working and continuously emits a laser beam to the calibration board. The irradiated area of ​​the calibration board outputs a light intensity signal. Based on the light intensity signal, the offset data of the light spot relative to the preset reference position on the calibration board is identified. The adjustment bolts are adjusted based on the offset data to control the light spot to reach the preset reference position.

[0007] Further, adjusting each of the adjusting bolts based on the offset data includes: Establish a finite element simulation model of the laser pointing adjustment module, and input the elastic modulus of the laser seat, the stiffness of the gasket, and the installation constraints of the laser module; The simulation applies several sets of feed rate sets, each set of feed rate sets including feed rate data corresponding to each of the adjusting bolts; Based on each set of feed rates, the corresponding offset data is solved to obtain several sets of sample data, which include offset data and corresponding feed rate data. A mapping model is constructed based on several sets of sample data. The mapping model outputs the set of feed amounts after taking the offset data as input.

[0008] Furthermore, it also includes: Based on several sets of sample data, several virtual data are generated through a Gaussian process, and the mapping model is constructed using the sample data and the virtual data.

[0009] Furthermore, it also includes: Several physical calibration tests were conducted on the laser pointing adjustment module to obtain several sets of calibration samples. The calibration samples include the calibration offset data of the laser spot and the corresponding calibration feed set. The calibration offset data is input into the mapping model, and the feed set is output. The deviation set is calculated based on the calibration feed set and the feed set to obtain the correction sample data, which includes the calibration offset data and the corresponding deviation set. A compensation correction function is established based on several sets of corrected sample data. The compensation correction function is input with the offset data and outputs the deviation set accordingly. The deviation set and the feed rate set are superimposed and then output.

[0010] Furthermore, the construction process of the compensation correction function includes: Using the offset data as the input vector and the corresponding deviation set as the output vector, a multi-input multi-output linear compensation coefficient matrix is ​​obtained by fitting using the least squares method, and the linear compensation coefficient matrix is ​​used as the compensation correction function.

[0011] Dual-slice optical equipment, including: Two sets of laser pointing adjustment modules as described above; The reference module emits a reference laser beam, which serves as a reference for the beam direction adjustment of the two laser direction adjustment modules.

[0012] Furthermore, the laser pointing adjustment module and the reference module are mounted and fixed by a housing, the housing being integrally formed with: A reference mount is used to install the reference module. Support ribs are used to install the laser pointing adjustment module.

[0013] Furthermore, the reference base is provided with a through third hole; The reference module includes: The laser module is fitted to the reference base on one side, and the emitted laser enters and exits through the third hole. The laser mount includes a sleeve fitted around the periphery of the laser module, and a protruding edge extending outward from one end of the sleeve, the protruding edge being in contact with the reference mount. A gasket is fitted around the outer periphery of the sleeve and fits against the protruding edge. Under the support of the protruding edge, the gasket forms an adjustment gap with the reference seat. Several adjusting bolts are arranged around the laser base. The screw of the adjusting bolt passes through the washer and is threadedly connected to the reference base through the adjusting gap. The nut presses a portion of the protruding edge through the washer. The protrusion deforms under the extrusion, and the sleeve tilts under the influence of the deformation of the protrusion, which in turn causes the internal laser module to tilt synchronously to achieve the spot directionality adjustment of the reference laser beam.

[0014] The technical solution of this invention can achieve the following technical effects: It effectively solves the problem of laser beam pointing deviation and spot deviation from the preset position caused by the machining tolerance of parts, the cumulative error of assembly, and the fastening stress of existing laser equipment. By adjusting the bolt to squeeze the convex edge to generate local elastic deformation, the sleeve and laser module are tilted synchronously, thereby realizing the laser spot pointing adjustment, improving the laser pointing accuracy and adjustment stability.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded structural diagram of the laser pointing adjustment module; Figure 2 This is a top view of the laser pointing adjustment module. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at point BB; Figure 5 This is a schematic diagram of the adjustment method for the laser pointing adjustment module; Figure 6 This is a flowchart illustrating the process of constructing a mapping model based on finite element simulation. Figure 7 A flowchart illustrating the process of constructing a compensation correction function based on physical calibration; Figure 8 This is an exploded view of the dual-cut optical device; Figure 9 This is a schematic diagram of the internal assembly structure of a dual-slice optical device; Figure 10 for Figure 9 A magnified schematic diagram of the partial structure at point A in the middle; Figure 11 for Figure 9 A magnified schematic diagram of the local structure at point B; Figure 12 This is a schematic diagram of a partial inner structure of the shell; Figure 13 This is a schematic diagram of the outer structure of the shell; Figure 14 This is a schematic diagram showing the positional distribution of the first light spot, the second light spot, and the calibration light spot on the calibration plate.

[0018] Reference numerals in the attached drawings: 1. Mounting base; 11. First cavity; 12. First hole; 2. Laser module; 3. Laser base; 31. Sleeve; 32. Protruding edge; 33. Second hole; 4. Gasket; 5. Adjusting gap; 6. Adjusting bolt; 7. Housing; 71. Reference base; 71a. Third cavity; 71b. Third hole; 72. Support rib; 73. Light-transmitting plate; 8. Calibration plate; 81. First light spot; 82. Second light spot; 83. Calibration light spot. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1

[0021] like Figure 1-4 As shown, the laser pointing adjustment module includes: The mounting base 1 is provided with a through first hole 12; in some embodiments of the present invention, a first cavity 11 may be provided on the mounting base 1, and the first hole 12 may be provided at the bottom of the first cavity 11. The laser module 2 is fitted to the mounting base 1 on one side. When the first cavity 11 is provided, it is embedded in the first cavity 11 to obtain lateral auxiliary positioning. The emitted laser enters and exits from the first hole 12. The laser mount 3 includes a sleeve 31 fitted around the laser module 2, and a protrusion 32 extending outward from one end of the sleeve 31, the protrusion 32 being fitted with the mounting base 1. The gasket 4 is sleeved around the sleeve 31 and fits against the flange 32. Under the support of the flange 32, the gasket 4 forms an adjustment gap 5 with the mounting base 1. Several adjusting bolts 6 are arranged around the laser base 3. The screw of the adjusting bolt 6 passes through the washer 4 and is threaded to the mounting base 1 through the adjusting gap 5. The nut presses the protruding edge 32 locally through the washer 4. The protrusion 32 deforms under compression, and the sleeve 31 tilts under the influence of the deformation of the protrusion 32, which in turn drives the internal laser module 2 to tilt synchronously to achieve beam direction adjustment.

[0022] During implementation, the amount of extrusion in different directions can be controlled by several adjusting bolts 6. After adjustment, the deformation state is maintained by locking the adjusting bolts 6. The adjustment gap 5 is isolated by the shim 4. The position is not easy to bounce back and drift after adjustment, and the long-term working stability is good.

[0023] In some embodiments of the present invention, the gasket 4 may be made of stainless steel or spring steel to ensure rigidity, wear resistance and dimensional stability; the laser seat 3 may be made of engineering plastic, relying on the elasticity of the polymer material itself to achieve stable and recoverable small elastic deformation of the protrusion 32; of course, in addition to the above materials, other materials that can achieve the technical purpose of the present invention are also within the protection scope of the present invention.

[0024] The number of adjusting bolts should preferably be 3-5. Figure 2 The document shows an implementation with a set quantity of 4.

[0025] See Figure 3 and Figure 4In some embodiments of the present invention, a stepped surface is provided around the first cavity 11, the laser seat 3 abuts against the stepped surface, and the sidewall of the stepped surface can assist in the lateral positioning of the laser seat 3.

[0026] This invention effectively solves the problem of laser beam pointing deviation and spot deviation from the preset position caused by the machining tolerance of parts, cumulative assembly error and fastening stress of existing laser equipment. By adjusting the bolt 6 to squeeze the convex edge 32 to generate local elastic deformation, the sleeve 31 and the laser module 2 are tilted synchronously, thereby realizing the laser spot pointing adjustment and improving the laser pointing accuracy and adjustment stability.

[0027] As a preferred embodiment of the above, the sleeve 31 is provided with a second cavity, and the laser module 2 is embedded in the second cavity on the other side; The outer wall of the laser module 2 is spaced apart from the inner wall of the second cavity, and both ends of the laser module 2 are pressed and fitted against the bottom surface of the mounting base 1 and the second cavity, respectively; when the first cavity 11 is provided, the outer wall of the laser module 2 is also spaced apart from the inner wall of the first cavity 11.

[0028] In this preferred embodiment, the spaced arrangement ensures that the sidewalls of the concave cavity are not restricted by the rigid structure of the laser module 2, thereby making the deformation sensing capability more sensitive. The laser module 2 achieves positioning and force transmission only by pressing and fitting the end faces of both ends with the bottom surfaces of the first and second concave cavities respectively. When the sleeve 31 tilts, the tilting torque can be directly transmitted to the laser module 2 through the fitting of the end faces of both ends.

[0029] In some embodiments of the present invention, a second hole 33 is provided at the bottom of the second cavity, which passes through the laser seat 3. The provision of the second hole 33 can reduce local material and reduce the structural stiffness of the laser seat 3 at this position. When the adjusting bolt 6 applies a compressive force, the sleeve 31 is more likely to undergo tilting and bending deformation, and a larger deflection angle can be obtained under the same amount of compressive force.

[0030] Example 2

[0031] Based on Embodiment 1, this embodiment provides an adjustment method for a laser directivity adjustment module, such as... Figure 5 As shown, it includes: A1: Set up calibration board 8, which has an array matrix of several photoelectric receiving units; A2: Control the laser module 2 to start working and continuously emit laser beams to the calibration board 8. The irradiated area of ​​the calibration board 8 outputs light intensity signals, and the offset data of the light spot relative to the preset reference position on the calibration board 8 is identified based on the light intensity signals. In some embodiments of the present invention, the light intensity signal is subjected to noise reduction preprocessing to filter out the base noise caused by ambient stray light; the noise reduction preprocessing is based on the noise threshold for filtering, and in specific implementation, invalid photoelectric receiving units with light intensity signals lower than the noise threshold are removed; the remaining valid photoelectric receiving units constitute the light spot illumination area for extracting the outline range of the light spot. Based on the above contour range, as a further preferred option, the light intensity values ​​of each photoelectric receiving unit within the contour range are used as weights, and the weighted centroid algorithm is used to calculate the actual centroid coordinates of the light spot. The difference between the actual centroid coordinates of the light spot and the coordinates of the preset reference position on the calibration plate 8 is calculated to obtain the offset data. A3: Adjust each adjusting bolt 6 based on the offset data to control the light spot to reach the preset reference position.

[0032] By using the above optimized scheme, spot offset data can be accurately obtained, reducing the impact of environmental stray light and other factors on the detection results. The centroid coordinates can be readjusted by the weighted centroid algorithm to accurately determine the offset of the spot on the calibration plate 8.

[0033] As a preferred embodiment, such as Figure 6 As shown, each adjusting bolt 6 is adjusted based on the offset data, including: B1: Establish a finite element simulation model of the laser pointing adjustment module, and input the elastic modulus of the laser base 3, the stiffness of the gasket 4, and the installation constraints of the laser module 2. B2: Simulate the application of several sets of feed rate sets, each set of feed rate sets including feed rate data corresponding to each adjusting bolt 6; B3: Solve the corresponding offset data based on each set of feed rates to obtain several sets of sample data, including offset data and corresponding feed rate data; B4: Construct a mapping model based on several sets of sample data. After inputting offset data, the mapping model outputs a set of feed quantities.

[0034] By using finite element simulation to generate samples in batches and construct a mapping model, the set of feed amounts for each adjusting bolt 6 corresponding to the target spot offset can be quickly obtained. In the actual product manufacturing and assembly process, the mounting base 1 can be fixed first through the tooling structure, and the laser module 2, laser seat 3, and gasket 4 can be installed relative to the mounting base 1. Then, the pre-tightening of each adjusting bolt 6 can be completed, and the tightening action can be completed by an automated tightening gun. During implementation, the constructed mapping model is embedded in the production line control system. During the tightening of each adjusting bolt 6, the laser module 2 is turned on and the calibration plate is set. By acquiring the offset data of the laser module 2 spot relative to the target spot on the calibration plate in real time and inputting it into the mapping model, the set of feed amounts for each adjusting bolt 6 can be obtained in real time, which serves as the basis for controlling the screw-in depth of the adjusting bolt 6.

[0035] In some embodiments of the present invention, Abaqus or Ansys Mechanical can be used to establish finite element simulation models of the laser directivity adjustment module.

[0036] As an optimization method to enrich sample data, it also includes: Based on several sets of sample data, several sets of virtual data are generated through a Gaussian process, and a mapping model is constructed using both the sample data and the virtual data.

[0037] The above-mentioned preferred solutions can compensate for the insufficient number of finite element simulation samples and improve the model fitting effect. In some embodiments of the present invention, the virtual data generated by the Gaussian process is used to cover the interpolation range of the original samples.

[0038] Due to the differences between simulation and physical objects, the output results of the mapping model often have a certain deviation. In order to obtain higher adjustment accuracy, such as Figure 7 As shown, it also includes: C1: Conduct several physical calibration tests on the laser pointing adjustment module and obtain several sets of calibration samples. The calibration samples include the calibration offset data of the laser spot and the corresponding calibration feed set. C2: Input the calibration offset data into the mapping model, output the feed set, calculate the deviation set based on the calibration feed set and the feed set output by the mapping model, and obtain the correction sample data. The correction sample data includes the calibration offset data and the corresponding deviation set. C3: Establish a compensation correction function based on several sets of corrected sample data. The compensation correction function outputs a set of deviations after inputting offset data. C4: Outputs the sum of the deviation set and the feed set.

[0039] Similarly, the established compensation correction function is embedded in the production line control system. During the tightening of each adjusting bolt 6, on the one hand, the real-time feed amount set is obtained by inputting the real-time acquired offset data into the mapping model; on the other hand, the real-time deviation set is obtained by inputting the real-time acquired offset data into the compensation correction function. The above deviation set and feed amount set are superimposed and output as the control basis for the tightening action execution structure, such as the tightening gun mentioned in the above embodiment, to achieve precise control of the screw-in depth of the adjusting bolt 6. Through the above preferred scheme, deviation compensation can be performed on the output of the simulation-established mapping model to make up for the system deviation between the finite element simulation model and the physical assembly.

[0040] In the above preferred schemes, the mapping model originates from finite element physical simulation and reflects the mechanical action mechanism of the structure itself; the compensation correction function only absorbs systematic deviations caused by physical objects such as machining tolerances, gasket creep, assembly discrepancies or friction; in some embodiments of the present invention, when the tolerance of minor parts fluctuates in the same batch of products, the original mapping model can be used, and only the compensation correction function needs to be recalibrated and updated, without the need to do a lot of simulations again, and without the need to retrain the main model as a whole.

[0041] The above adjustment methods can be embedded in the control system of automated production lines to achieve automated adjustment of various product types, ultimately obtaining a laser pointing adjustment module with stable product quality. By combining the mapping model established by finite element simulation with the compensation correction function obtained based on physical calibration, the accuracy of the adjustment results can be improved while ensuring adjustment efficiency. Among them, the mapping model is used to quickly determine the initial feed amount of the adjusting bolt 6, and the compensation correction function is used to eliminate the systematic errors generated in the actual assembly process, thereby reducing the number of repeated adjustments.

[0042] During implementation, when multiple adjusting bolts 6 circumferentially press against various points of the protruding edge 32, the feed of a single adjusting bolt 6 will cause associated deformation in the surrounding area, and the deviations of each adjusting bolt 6 are mechanically related. To solve this problem, preferably, the construction process of the compensation correction function includes: Using the calibration offset data as the input vector and the corresponding set of deviations as the output vector, a multi-input multi-output compensation correction function is obtained by fitting using the least squares method. The form of the compensation correction function is a linear compensation coefficient matrix.

[0043] During implementation, the overall matrix fitting can fully reflect the surrounding deformation effect caused by the feed of each bolt, systematically correct the mechanical correlation error of the deviation between bolts, and avoid the compensation deviation caused by ignoring the coupling effect. In this preferred scheme, for the approximately linear characteristics of the small elastic deformation range of the convex edge 32, linear regression matrix fitting is adopted. The compensation process adopted is only matrix multiplication and addition, with a small amount of calculation, and can be directly run in the automated production line.

[0044] Taking the example of four adjusting bolts 6 evenly arranged circumferentially along the convex edge 32 of the laser holder 3, the corresponding matrix form is as follows: The input vector form of the calibration offset data is: ; in, This represents the calibration offset of the light spot in the X direction. This represents the calibration offset of the light spot in the Y direction, with constant term 1 corresponding to the fixed system deviation under zero offset. The output vector form of the deviation set obtained by corresponding calculation is as follows For example: ; in, This represents the feed deviation of the i-th adjusting bolt 6. A positive value indicates that an additional feed is needed, while a negative value indicates that a decrease in the feed is needed. Using the vector form of the calibration offset data and the corresponding deviation set as the data combination, the compensation correction function in the form of a multi-input multi-output linear compensation coefficient matrix is ​​obtained by fitting using the least squares method: ; Each row corresponds to the compensation coefficient of one bolt. The deviation gain coefficient of the i-th bolt to the X-direction light spot offset; The deviation gain coefficient of the i-th bolt for the Y-direction spot offset; Let be the fixing deviation term for the i-th bolt; During the product manufacturing and assembly process, the following formula can be used to calculate the value of the input vector, given that the input vector is known. - : .

[0045] Example 3

[0046] like Figure 8-14 As shown, the dual-slice optical device includes: Two sets of laser pointing adjustment modules as described in Example 1; The reference module emits a reference laser beam, which serves as the reference for adjusting the beam direction of the two laser direction adjustment modules.

[0047] like Figure 14 As shown, the calibration spot 83 formed by the reference laser beam on the calibration plate 8 is displayed, as well as the first spot 81 and the second spot 82 formed by the two laser directivity adjustment modules on the calibration plate 8, respectively. In the product assembly process, in some embodiments of the present invention, the laser pointing adjustment module and the reference module are first installed. After installation, the reference module is first adjusted to obtain a calibrated spot 83 with a precise position. Then, based on the calibrated spot 83, the preset reference positions of the two laser pointing adjustment modules are set. The specific adjustment process after setting is as described in Embodiment 2, and will not be repeated here. Finally, each spot can be adjusted to a straight line.

[0048] In a preferred embodiment, the laser pointing adjustment module and the reference module are mounted and fixed by the housing 7, which is integrally formed as follows: Reference mount 71, for installing the reference module; Support rib 72 is used to install the laser pointing adjustment module, and a light-transmitting sheet 73 is set on the outside of the housing 7 to seal the first hole 12.

[0049] The reference base 71 enables the positioning and installation of the reference module, ensuring the positional stability of the reference laser beam when used as an adjustment reference; the support rib 72 can improve the connection strength between the laser pointing adjustment module and the housing 7, providing stable installation support for the laser pointing adjustment process.

[0050] As a preferred embodiment, the reference base 71 is provided with a through third hole 71b; in some embodiments of the present invention, a third cavity 71a may be provided on the reference base 71, and the third hole 71b may be provided at the bottom of the third cavity 71a. The baseline module includes: The laser module 2 is fitted to the reference base 71 on one side. When the third cavity 71a is provided, it is embedded in the third cavity 71a to obtain lateral auxiliary positioning. The emitted laser enters and exits from the third hole 71b. The laser base 3 includes a sleeve 31 fitted around the laser module 2, and a protrusion 32 extending outward from one end of the sleeve 31, the protrusion 32 being in contact with the reference base 71. The gasket 4 is sleeved around the sleeve 31 and fits against the flange 32. Under the support of the flange 32, the gasket 4 forms an adjustment gap 5 with the reference seat 71. Several adjusting bolts 6 are arranged around the laser base 3. The screw of the adjusting bolt 6 passes through the washer 4 and is threaded to the reference base 71 through the adjusting gap 5. The nut presses the protruding edge 32 locally through the washer 4. The protrusion 32 deforms under compression, and the sleeve 31 tilts under the influence of the deformation of the protrusion 32, which in turn drives the internal laser module 2 to tilt synchronously to achieve the beam directionality adjustment of the reference laser beam.

[0051] The reference module in this embodiment can refer to the structure of the laser directivity adjustment module except for the mounting base 1, and its adjustment method is as described in Embodiment 2, which will not be repeated here.

[0052] The dual-cutting laser device in this embodiment can be used outdoors or indoors. Specifically, it can be placed on one side of a running track, with a reflector on the opposite side. When an athlete runs past the location of the dual-cutting laser device, the laser beam is cut off, triggering a signal. Using two sets of laser directionality adjustment modules provides greater stability and avoids the influence of environmental factors, such as outdoor sunlight. The probability of both laser directionality adjustment modules being affected simultaneously is lower than the probability of affecting only one module.

[0053] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A laser pointing adjustment module, characterized in that, include: The mounting base is provided with a through hole; The laser module is fitted to the mounting base on one side, and the emitted laser enters and exits through the first hole. The laser mount includes a sleeve fitted around the periphery of the laser module, and a protruding edge extending outward from one end of the sleeve, the protruding edge being in contact with the mounting base; A gasket is fitted around the outer periphery of the sleeve and fits against the protruding edge. Under the support of the protruding edge, the gasket forms an adjustable gap with the mounting base. A plurality of adjusting bolts are arranged around the laser base, the bolts of the adjusting bolts passing through the washer and threadedly connected to the mounting base through the adjusting gap, and the nuts pressing a portion of the protruding edge through the washer; The protrusion deforms under compression, and the sleeve tilts under the influence of the deformation of the protrusion, which in turn causes the internal laser module to tilt synchronously to achieve beam direction adjustment.

2. The laser pointing adjustment module according to claim 1, characterized in that, The sleeve is provided with a second cavity, and the other side of the laser module is embedded in the second cavity; The outer wall of the laser module is spaced apart from the inner wall of the second cavity, and both ends of the laser module are pressed and fitted against the bottom surface of the mounting base and the second cavity, respectively.

3. The adjustment method of the laser directivity adjustment module as described in claim 1, characterized in that, include: A calibration board is provided, wherein an array matrix of several photoelectric receiving units is provided on the calibration board; The laser module is controlled to start working and continuously emits a laser beam to the calibration board. The irradiated area of ​​the calibration board outputs a light intensity signal. Based on the light intensity signal, the offset data of the light spot relative to the preset reference position on the calibration board is identified. The adjustment bolts are adjusted based on the offset data to control the light spot to reach the preset reference position.

4. The adjustment method of the laser directivity adjustment module according to claim 3, characterized in that, Adjusting each of the adjusting bolts based on the offset data includes: Establish a finite element simulation model of the laser pointing adjustment module, and input the elastic modulus of the laser base, the stiffness of the gasket, and the installation constraints of the laser module; The simulation applies several sets of feed rate sets, each set of feed rate sets including feed rate data corresponding to each of the adjusting bolts; Based on each set of feed rates, the corresponding offset data is solved to obtain several sets of sample data, which include offset data and corresponding feed rate data. A mapping model is constructed based on several sets of sample data. The mapping model outputs the set of feed amounts after taking the offset data as input.

5. The adjustment method of the laser directivity adjustment module according to claim 4, characterized in that, Also includes: Based on several sets of sample data, several virtual data are generated through a Gaussian process, and the mapping model is constructed using the sample data and the virtual data.

6. The adjustment method of the laser directivity adjustment module according to claim 4, characterized in that, Also includes: Several physical calibration tests were conducted on the laser pointing adjustment module to obtain several sets of calibration samples. The calibration samples include the calibration offset data of the laser spot and the corresponding calibration feed set. The calibration offset data is input into the mapping model, and the feed set is output. The deviation set is calculated based on the calibration feed set and the feed set to obtain the correction sample data, which includes the calibration offset data and the corresponding deviation set. A compensation correction function is established based on several sets of corrected sample data. The compensation correction function is input with the offset data and outputs the deviation set accordingly. The deviation set and the feed rate set are superimposed and then output.

7. The adjustment method of the laser directivity adjustment module according to claim 6, characterized in that, The process of constructing the compensation correction function includes: Using the offset data as the input vector and the corresponding deviation set as the output vector, a multi-input multi-output linear compensation coefficient matrix is ​​obtained by fitting using the least squares method, and the linear compensation coefficient matrix is ​​used as the compensation correction function.

8. A dual-slice optical device, characterized in that, include: Two sets of laser pointing adjustment modules as described in claim 1; A reference module emits a reference laser beam, which serves as a reference for adjusting the beam direction of the two laser direction adjustment modules.

9. The dual-slice optical device according to claim 8, characterized in that, The laser pointing adjustment module and the reference module are mounted and fixed by a housing, which is integrally formed with the following components: A reference mount is used to install the reference module. Support ribs are used to install the laser pointing adjustment module.

10. The dual-slice optical device according to claim 9, characterized in that, The reference base is provided with a through third hole; The reference module includes: The laser module is fitted to the reference base on one side, and the emitted laser enters and exits through the third hole. The laser mount includes a sleeve fitted around the periphery of the laser module, and a protruding edge extending outward from one end of the sleeve, the protruding edge being in contact with the reference mount. A gasket is fitted around the outer periphery of the sleeve and fits against the protruding edge. Under the support of the protruding edge, the gasket forms an adjustment gap with the reference seat. Several adjusting bolts are arranged around the laser base. The screw of the adjusting bolt passes through the washer and is threadedly connected to the reference base through the adjusting gap. The nut presses a portion of the protruding edge through the washer. The protrusion deforms under the extrusion, and the sleeve tilts under the influence of the deformation of the protrusion, which in turn causes the internal laser module to tilt synchronously to achieve the spot directionality adjustment of the reference laser beam.

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