Dynamic shaping device, method and equipment for non-centrosymmetric laser beams and medium

Abstract

The embodiment of the invention provides a dynamic shaping device, method and equipment for a non-centrosymmetric laser beam and a medium, and the device comprises a laser output module, a non-centrosymmetric lens and a multi-degree-of-freedom adjusting lens bracket. The laser output module is used for generating asymmetric laser beams; the multi-degree-of-freedom adjusting lens bracket is used for fixing the non-centrosymmetric lens on an optical platform, and the driving mechanism drives the multi-degree-of-freedom adjusting lens bracket to control the non-centrosymmetric lens to rotate by any angle along a main optical axis; the non-centrosymmetric lens is arranged on a light path of the asymmetric laser beam through the multi-degree-of-freedom adjusting lens bracket and is used for carrying out continuous or segmented dynamic shaping on the light spot shape of the asymmetric laser beam, so that the problem that the laser beam is difficult to dynamically and flexibly shape during laser application is solved; therefore, the requirement of quickly switching light spots with different shapes is met.

Description

[0001] Dynamic shaping device, method, equipment and medium for non-centrally symmetric laser beam TECHNICAL FIELD The present application relates to the field of laser beam shaping, in particular to a dynamic shaping device, method, equipment and medium for non-centrally symmetric laser beam. BACKGROUND

[0002] With the increasing use of lasers in the industrial field, new requirements for various parameters and performance of laser spots are put forward in various fields. Some fields have more demand for rectangular spots, elliptical spots or other shaped spots. The existing rectangular cross-section laser beam (such as semiconductor laser and part of fiber laser output) has non-central symmetry (such as different X / Y direction sizes, different divergence angles or uneven light intensity distribution), and the shape of the focused spot is irregular.

[0003] Traditional shaping methods often use multiple lens combinations, such as microlens arrays and aspherical lens groups. The system is complex, the cost is high, frequent adjustment is needed, and once the assembly is completed, the shape of the spot is difficult to achieve continuous and sustainable changes.

[0004] In the fields of laser processing (cutting / welding / drawing), optical detection and display, it is often necessary to quickly switch between different aspect ratios or different shaped spots. The existing technology cannot meet the dynamic and flexible shaping requirements, therefore, there is an urgent need for a more flexible dynamic shaping method to meet the needs of laser beams in various fields.

[0005] Therefore, there is an urgent need to propose a dynamic shaping device for non-centrally symmetric laser beams to solve the problem of difficulty in dynamically and flexibly shaping laser beams during laser application to meet the demand of quickly switching between different shaped spots. SUMMARY

[0006] To overcome the problems in the related art, the present disclosure provides a dynamic shaping device for non-centrally symmetric laser beams to solve the technical problem of difficulty in dynamically and flexibly shaping laser beams during laser application in the related art to meet the demand of quickly switching between different shaped spots.

[0007] One or more embodiments of the present specification provide a dynamic shaping device for non-centrally symmetric laser beams, comprising: a laser output module, a non-centrally symmetric lens and a multi-degree-of-freedom adjustment mirror frame. The laser output module is configured to generate a non-symmetrical laser beam. The multi-degree-of-freedom adjustment mirror frame is configured to fix the non-centrally symmetric lens on an optical platform, and drive the multi-degree-of-freedom adjustment mirror frame to control the non-centrally symmetric lens to rotate by any angle along the main optical axis through a driving mechanism. The non-central symmetric lens is arranged on the light path of the non-symmetric laser beam through the multi-degree-of-freedom adjusting mirror holder, and is used for continuously or segmentally dynamically shaping the spot shape of the non-symmetric laser beam.

[0008] Preferably, the multi-degree-of-freedom adjusting mirror holder is further used for keeping the central position of the non-central symmetric lens unchanged, and controlling the non-central symmetric lens to generate a pitch angle within a preset angle in the beam propagation direction to change the spot position.

[0009] Preferably, the control unit is further connected with the driving mechanism, and is used for controlling the rotation angle and rotation speed of the non-central symmetric lens.

[0010] Preferably, the non-central symmetric lens can be a piece of non-central symmetric lens, or a combination of multiple pieces of non-central symmetric lenses.

[0011] Preferably, the non-central symmetric lens can be a piece of non-central symmetric lens, or a combination of multiple pieces of non-central symmetric lenses.

[0012] The one or more embodiments of the specification provide a dynamic shaping method of a non-central symmetric laser beam, comprising the following steps: A non-symmetric laser beam is generated by using a laser output module; The multi-degree-of-freedom adjusting mirror holder fixes the non-central symmetric lens on an optical platform, and drives the non-central symmetric lens to rotate by any angle along the main optical axis through a driving mechanism; The non-central symmetric lens arranged on the light path of the non-symmetric laser beam through the multi-degree-of-freedom adjusting mirror holder continuously or segmentally dynamically shapes the spot shape of the non-symmetric laser beam.

[0013] Preferably, the following steps are further included: The multi-degree-of-freedom adjusting mirror holder keeps the central position of the non-central symmetric lens unchanged, and controls the non-central symmetric lens to generate a pitch angle within a preset angle in the beam propagation direction to change the spot position.

[0014] Preferably, the following steps are further included: The rotation angle and rotation speed of the non-central symmetric lens are controlled through a control unit connected with the driving mechanism.

[0015] Preferably, the non-central symmetric lens can be a piece of non-central symmetric lens, or a combination of multiple pieces of non-central symmetric lenses.

[0016] The one or more embodiments of the specification provide a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned dynamic shaping method of the non-centrosymmetric laser beam when executing the computer program.

[0017] The one or more embodiments of the specification provide a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to implement the steps of the above-mentioned dynamic shaping method of the non-centrosymmetric laser beam.

[0018] The non-centrosymmetric laser beam dynamic shaping device, method, equipment and medium provided by the disclosure have the advantages that the laser output module is used to generate an asymmetric laser beam, which provides an adaptive incident light source for subsequent shaping and solves the prerequisite problem that the traditional device is difficult to accurately control the asymmetric beam; the multiple-degree-of-freedom adjustment mirror frame is used to fix the non-centrosymmetric lens on an optical platform, the non-centrosymmetric lens is controlled to rotate by any angle along the main optical axis by driving the multiple-degree-of-freedom adjustment mirror frame through a driving mechanism, the non-centrosymmetric lens is stably fixed on the optical platform through a mechanical structure, the stability of the optical path is ensured, and the lens is rotated by any angle from 0° to 360° along the main optical axis relying on the motor drive, which provides a controllable mechanical execution basis for dynamic shaping and breaks through the limitation of the traditional fixed lens that the position and angle are unchangeable; the non-centrosymmetric lens is arranged on the optical path of the asymmetric laser beam through the multiple-degree-of-freedom adjustment mirror frame and is used to continuously or segmentally dynamically shape the spot shape of the asymmetric laser beam, the non-centrosymmetric lens has higher adaptability to the asymmetric incident beam based on special optical design and can directly act on the asymmetric spot to realize basic shaping function, which is different from the “forced symmetry” processing of the traditional symmetric lens on the asymmetric beam and reduces the spot distortion in the basic shaping stage. Combined with the rotation function of the motor drive, the non-centrosymmetric lens can continuously and steplessly adjust the spot shape through continuous angle change and can also segmentally and accurately control through preset angle gears, effectively solving the limitation of the traditional fixed optical element that “one shaping is fixed shape” and meeting the demand for dynamic change of the spot. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the one or more embodiments of the specification or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the specification, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 A structural diagram of a dynamic shaping device of a non-central symmetric laser beam provided by one or more embodiments of the present specification; Figure 2 A structural diagram of a dynamic shaping device of a non-central symmetric laser beam provided by one or more embodiments of the present specification; Figure 3 A structural diagram of a multi-degree-of-freedom adjustment frame provided by one or more embodiments of the present specification; Figure 4 A flowchart of a dynamic shaping method of a non-central symmetric laser beam provided by one or more embodiments of the present specification; Figure 5 A ZEMAX simulation diagram provided by one or more embodiments of the present specification; Figure 6 A cylindrical lens state diagram when the cylindrical lens is located at an initial rotation angle of 0° for an embodiment of the present invention; Figure 7 A spot effect diagram displayed on the ZEMAX receiving screen when the cylindrical lens is rotated by 45° for an embodiment of the present invention; Figure 8 A cylindrical lens state diagram when the cylindrical lens is rotated by 45° for an embodiment of the present invention; Figure 9 A spot effect diagram displayed on the ZEMAX receiving screen when the cylindrical lens is rotated by 45° for an embodiment of the present invention; Figure 10 A cylindrical lens state diagram when the cylindrical lens is rotated by 90° for an embodiment of the present invention; Figure 11 A spot effect diagram displayed on the ZEMAX receiving screen when the cylindrical lens is rotated by 90° for an embodiment of the present invention; Figure 12 A rectangular spot and an elliptical spot diagram; Figure 13 A structural diagram of a computer provided by one or more embodiments of the present specification.

[0021] Reference signs: 1-laser output module, 2-cylindrical lens. DETAILED DESCRIPTION

[0022] In order to enable persons skilled in the art to better understand the technical solutions in one or more embodiments of the present specification, the technical solutions in one or more embodiments of the present specification will be described clearly and completely below in conjunction with the drawings of one or more embodiments of the present specification. Obviously, the described embodiments are only part of the embodiments of the present specification, not all embodiments. Based on one or more embodiments of the present specification, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the present invention.

[0023] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0024] Device Examples According to embodiments of the present invention, a dynamic shaping device for non-centrosymmetric laser beams is provided, such as... Figure 1 The diagram shown is a structural schematic of a dynamic shaping device for a non-centrosymmetric laser beam provided in this embodiment. According to this embodiment, the dynamic shaping device for a non-centrosymmetric laser beam includes a laser output module 11, a non-centrosymmetric lens 12, and a multi-degree-of-freedom adjustment frame 13. Figure 2 The diagram shown is a simplified structural diagram of a dynamic shaping device for a non-centrosymmetric laser beam provided in this embodiment.

[0025] The laser output module 11 is used to generate an asymmetric laser beam. The laser output module 11 can be a semiconductor laser, a fiber laser, or other solid-state laser output module. The laser source can be located on any side of the non-centrosymmetric lens 12. The laser beam is emitted from the laser, and the shape of the output laser spot is a non-centrosymmetric spot. The size of the laser spot of the laser source can be larger or smaller than the size of the non-centrosymmetric lens 12.

[0026] The multi-degree-of-freedom adjustable frame 13 is used to fix the non-centrosymmetric lens 12 onto the optical platform, such as... Figure 3 The diagram shows the structure of the multi-degree-of-freedom adjustable frame provided in this embodiment. A drive mechanism, which can be a motor, drives the multi-degree-of-freedom adjustable frame 13 to control the non-centrosymmetric lens 12 to rotate at any angle along the principal optical axis. The rotation angle of the non-centrosymmetric lens 12 corresponds to the change in the shape of the output light spot. Different rotation angles of the non-centrosymmetric lens 12 result in corresponding changes in the shape of the output light spot. During rotation, the uniformity of the laser beam's energy distribution remains within a certain range to ensure the quality of the shaped light spot. Furthermore, the range of shape changes in the laser beam can be calculated and predicted based on the optical parameters of the non-centrosymmetric lens 12 and the rotation angle to achieve precise shaping of the light spot. During the rotation of the non-centrosymmetric lens 12, the change in the laser beam's shape can be monitored in real time by an optical detection device to ensure the accuracy and stability of the shaping effect.

[0027] The non-central symmetric lens 12 is made of optical glass or other materials with optical transmission properties, is arranged on the light path of the asymmetric laser beam through the multi-degree-of-freedom adjusting lens holder 13, the center of the non-central symmetric lens 12 should be on the same principal axis as the laser output module, the convex surface or the plane of the non-central symmetric lens 12 can face the laser output module, is fixed on the lens holder that can rotate along the principal axis, and the distance between the laser output module and the non-central symmetric lens 12 is adjustable, for continuously or segmentally dynamically shaping the spot shape of the asymmetric laser beam.

[0028] The non-central symmetric lens 12 can be a piece of non-central symmetric lens 12 or a combination of multiple pieces of non-central symmetric lens 12 to achieve the shaping effect of different laser beams.

[0029] The device provided in the embodiment, the laser output module 11, is used to generate an asymmetric laser beam, provides an adaptive incident light source for subsequent shaping, and solves the prerequisite problem that the traditional device is difficult to accurately control the asymmetric beam from the source; the multi-degree-of-freedom adjusting lens holder 13 is used to fix the non-central symmetric lens 12 on the optical platform, the driving mechanism drives the multi-degree-of-freedom adjusting lens holder 13 to control the non-central symmetric lens 12 to rotate by any angle along the principal axis, the mechanical structure stably fixes the non-central symmetric lens 12 on the optical platform, guarantees the stability of the optical path, and relies on the motor drive to realize the rotation of the lens along the principal axis by any angle from 0° to 360°, provides a controllable mechanical execution basis for dynamic shaping, and breaks through the limitation of the traditional fixed lens that the position and angle are unchangeable; the non-central symmetric lens 12 is arranged on the light path of the asymmetric laser beam through the multi-degree-of-freedom adjusting lens holder 13, for continuously or segmentally dynamically shaping the spot shape of the asymmetric laser beam, the non-central symmetric lens 12 has higher adaptability to the asymmetric incident beam based on special optical design, can directly act on the asymmetric spot to realize basic shaping function, is different from the “forced symmetry” processing of the traditional symmetric lens on the asymmetric beam, and reduces the spot distortion in the basic shaping stage. Combined with the rotation function of the motor drive, the non-central symmetric lens 12 can realize continuous stepless adjustment of the spot shape through continuous angle change, and can also realize segmented accurate control through preset angle gears, effectively solves the limitation of the traditional fixed optical element that “one shaping is fixed shape”, and meets the demand for dynamic change of the spot.

[0030] In one embodiment, the multi-degree-of-freedom adjustment frame 13 is also used to control the pitch angle of the non-central symmetric lens 12 within a preset angle (less than or equal to 30°) in the direction of beam propagation while keeping the center position of the non-central symmetric lens 12 unchanged, and the pitch angle of the non-central symmetric lens 12 corresponds to the position of the output spot. The shaping effect of this method on the non-central symmetric beam can be evaluated by observing the spot shape displayed on the receiving screen in ZEMAX software.

[0031] In this embodiment, the non-central symmetric lens 12 is used to shape the non-central symmetric beam. Since the non-central symmetric lens 12 only has curvature in one direction (curvature direction), only this direction can refract the light, and the vertical direction is a plane. Therefore, when the light passes through the non-central symmetric lens 12, only the curvature direction is deflected. By rotating the non-central symmetric lens 12 along the Z-axis or around the X-axis when the non-central symmetric beam passes through the non-central symmetric lens 12, the non-central symmetric lens 12 can produce different deflection effects on the beam, thereby achieving the purpose of continuously shaping the non-central symmetric beam in a simple system structure.

[0032] The device provided in this embodiment not only avoids the light beam reference drift caused by position deviation by fixing the non-central symmetric lens, ensuring the stability and reference consistency of the spot position adjustment, but also can realize the directional and controllable movement of the spot within a preset range by precisely controlling the pitch angle, meeting the flexible adjustment requirements of the spot action position in different scenarios. At the same time, the preset range of the pitch angle ensures the safety and controllability of the adjustment, avoids beam distortion or system mismatch caused by excessive adjustment, and improves the adaptability and reliability of the device in application scenarios with high spot positioning accuracy requirements.

[0033] In one embodiment, a control unit is also included, which is connected with the driving mechanism and used to control the rotation angle and rotation speed of the non-central symmetric lens 12. The rotation angle and rotation speed can be preset or adjusted in real time according to actual application requirements to realize dynamic adjustment of the spot shape. The driving mechanism is a motor driving device connected with the non-central symmetric lens 12, which can accurately control the rotation angle and rotation speed of the non-central symmetric lens 12.

[0034] During the rotation of the non-central symmetric lens 12, the change of the spot shape of the laser beam can be simulated and optimized through optical simulation software to improve the efficiency and accuracy of the shaping effect, or can be verified and adjusted through optical experiments to ensure the reliability and practicality of the shaping effect. At the same time, real-time monitoring and feedback control are performed through an optical detection device to realize dynamic adjustment and optimization of the spot shape.

[0035] The device provided by the embodiment can accurately match different shaping requirements by precisely setting and adjusting the rotation angle, ensure that the light spot shape is accurately presented according to the expected target, and flexibly adjust the change rate of the light spot shape by controlling the rotation speed, realize the on-demand regulation of the transition rhythm in the continuous shaping process, make the whole shaping process free from the limitation of manual adjustment, realize automatic operation, reduce human error, improve the efficiency and reliability of the device in batch operation and long-time stable operation scenarios, and further expand the adaptability of the device in precise optical applications.

[0036] Method embodiment According to the embodiment of the present application, a dynamic shaping method of a non-central symmetric laser beam is provided. Figure 4 As shown in the figure, the flow chart of the dynamic shaping method of the non-central symmetric laser beam provided by the embodiment, the dynamic shaping method of the non-central symmetric laser beam according to the embodiment of the present application includes the following steps: S401, a laser output module 11 is used to generate an asymmetric laser beam.

[0037] S402, a multi-degree-of-freedom adjusting mirror frame 13 is used to fix the non-central symmetric lens 12 on an optical platform, and a driving mechanism is used to drive the multi-degree-of-freedom adjusting mirror frame 13 to control the non-central symmetric lens 12 to rotate by any angle along the main optical axis.

[0038] S403, the non-central symmetric lens 12 arranged on the light path of the asymmetric laser beam by the multi-degree-of-freedom adjusting mirror frame 13 is used to continuously or segmentally dynamically shape the light spot shape of the asymmetric laser beam, and the non-central symmetric lens 12 can be a piece of non-central symmetric lens 12 or a combination of multiple pieces of non-central symmetric lens 12.

[0039] The method provided by the embodiment generates an asymmetric laser beam through the laser output module 11, provides an adaptive incident light source for subsequent shaping, and solves the prerequisite problem that the traditional device is difficult to accurately control the asymmetric beam; the non-central symmetric lens 12 is fixed on the optical platform, the driving mechanism drives the multi-degree-of-freedom adjusting frame 13 to control the non-central symmetric lens 12 to rotate by any angle along the main optical axis, the non-central symmetric lens 12 is stably fixed on the optical platform through the mechanical structure, the stability of the optical path is ensured, and the lens is rotated by any angle of 0°-360° along the main optical axis relying on the motor drive, which provides a controllable mechanical execution basis for dynamic shaping and breaks through the limitation of the traditional fixed lens that the position and angle are unchangeable; the multi-degree-of-freedom adjusting frame 13 is arranged on the light path of the asymmetric laser beam, and is used for continuously or segmentally dynamically shaping the spot shape of the asymmetric laser beam. The non-central symmetric lens 12 has higher adaptability to the asymmetric incident beam based on special optical design, can directly act on the asymmetric spot to realize basic shaping function, is different from the “forced symmetry” processing of the traditional symmetric lens on the asymmetric beam, and reduces the spot distortion in the basic shaping stage. Combined with the rotation function of the motor drive, the non-central symmetric lens 12 can realize continuous stepless adjustment of the spot shape through continuous angle change, and can also realize segmental accurate control through preset angle gears, effectively solves the limitation that the traditional fixed optical element is “fixed in shape after one shaping”, and meets the demand for dynamic change of the spot.

[0040] In one embodiment, the method further comprises the following steps: The multi-degree-of-freedom adjusting frame 13 controls the non-central symmetric lens 12 to generate a pitch angle within a preset angle in the beam propagation direction while keeping the central position of the non-central symmetric lens 12 unchanged.

[0041] The method provided by the embodiment not only avoids the light beam reference drift caused by the position offset of the fixed non-central symmetric lens, ensures the stability and reference consistency of the spot position adjustment, but also can realize the directional and controllable movement of the spot within a preset range by accurately controlling the pitch angle, meets the flexible adjustment demand of the spot action position in different scenes, and at the same time, the preset range limitation of the pitch angle ensures the safety and controllability of the adjustment, avoids the light beam distortion or system mismatch caused by excessive adjustment, and improves the adaptability and reliability of the device in the application scene with high spot positioning accuracy requirement.

[0042] In one embodiment, the method further comprises the following steps: The control unit connected with the driving mechanism controls the rotation angle and rotation speed of the non-central symmetric lens 12.

[0043] The method provided in the embodiment can accurately match different shaping requirements by accurately setting and adjusting the rotation angle, ensure that the light spot shape is accurately presented according to the expected target, and control the rotation speed to flexibly adjust the change rate of the light spot shape, realize the on-demand regulation of the transition rhythm in the continuous shaping process, make the whole shaping process free from the limitation of manual adjustment, realize automatic operation, reduce human error, improve the efficiency and reliability of the device in batch operation and long-time stable operation scenarios, and further expand the adaptability of the device in precise optical applications.

[0044] The embodiment of the application is a device corresponding to the above-mentioned method embodiment, and the specific operations of each module processing step can be understood with reference to the description of the method embodiment, which will not be repeated here.

[0045] The scheme is further described below through ZEMAX software simulation: As shown in Figure 5 , it is a ZEMAX simulation schematic diagram provided in the embodiment, and each component simulated by the ZEMAX software is installed in the corresponding position. The light beam output by the laser output module is a non-central symmetric light beam. After being deflected by the cylindrical lens, the shaping purpose is achieved. In the embodiment, the laser output module is a strip light source, and the light spot shape of the output light beam is a strip shape.

[0046] In the embodiment, ZEMAX software is used for simulation, the selected curvature radius of the cylindrical lens is 258.5 mm, and the cylindrical lens focuses or diverges the light beam through a curved surface. Unlike a spherical lens, the curved surface of the cylindrical lens has a curvature radius only in one direction, so the cylindrical lens only focuses or diverges the light beam in the direction. In the direction parallel to the curvature surface, the light beam has no focusing or diverging effect. According to the characteristic of the cylindrical lens, continuous shaping of the light beam can be realized by rotation. In the embodiment, the multiple-degree-of-freedom adjustment frame can rotate the cylindrical lens along the Z axis or the X axis, and the rotation angle can be marked by a scale.

[0047] In the embodiment, the convex surface of the cylindrical lens faces forward and points to the laser output module; the flat surface faces backward, and the curvature radius points to the positive direction of the Z axis.

[0048] As shown in Figure 6 , it is a cylindrical lens state diagram when the cylindrical lens in the embodiment is located at an initial rotation angle of 0°. At the initial time, the rotation angle of the cylindrical lens is 0°, at this time, the cylindrical lens does not rotate, the light beam is focused in the Y direction after passing through the cylindrical lens, and the X direction does not change. The shaped light spot is displayed on the receiving screen, as shown in Figure 7 , it is a light spot effect diagram displayed on the ZEMAX receiving screen when the cylindrical lens in the embodiment is located at an initial rotation angle of 0°.

[0049] As shown inFigure 8 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure Figure 9 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure

[0050] As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure Figure 10 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure Figure 11 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure

[0051] In the process of the present application, the rotation angle α of the column lens around the light beam propagation axis (Z axis) is set through the rotation adjusting mechanism; and on the receiving screen / work plane, a shaped light spot with a continuously changing shape corresponding to the angle α is obtained: when α = 0° or α = 90°, the focusing / defocusing direction of the column lens is parallel to one side (such as the long side or the short side) of the light source rectangle, the light spot is significantly compressed in the focusing direction, and a high aspect ratio rectangular or approximately linear light spot is formed; when 0° < α < 360° (especially α = 45°), the focusing / defocusing effect of the column lens acts on the components of the two original directions (X, Y) of the light source rectangle at the same time, and by adjusting α, the relative intensity distribution of the focusing / defocusing effect in the two directions can be continuously changed, as shown in the figure Figure 12 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure

[0052] As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure Figure 13 As shown in the figure, the column lens state diagram when the column lens is rotated by 45°, the column lens is rotated by 45° along the Z axis by adjusting the multi-degree-of-freedom mirror frame, at this time, the light passes through the column lens, under the action of the column lens, the light beam is focused along the oblique angle direction of the column lens, and the shaped light spot is displayed on the receiving screen, as shown in the figure

[0053] The present application also provides a computer readable storage medium, the computer readable storage medium stores a computer program, characterized in that the computer program is executed by the processor to realize the steps of the dynamic shaping method of the non-central symmetric laser beam.

[0054] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, storage, database or other medium used in each embodiment provided by the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0055] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device or system embodiment, since it is basically similar to the method embodiment, it is described more simply, and the relevant part can be referred to the part of the method embodiment. The above-described device and system embodiments are only illustrative, and the units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0056] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and the contents not described in detail in the specification of the present application are the known technology of those skilled in the art.

Claims

1. A dynamic shaping device for a non-centrosymmetric laser beam, characterized in that, Includes a laser output module, a non-centrosymmetric lens, and a multi-degree-of-freedom adjustable frame; The laser output module is used to generate an asymmetric laser beam; The multi-degree-of-freedom adjustable frame is used to fix the non-centrosymmetric lens on the optical platform, and the multi-degree-of-freedom adjustable frame is driven by the drive mechanism to control the non-centrosymmetric lens to rotate at any angle along the principal optical axis. The non-centrosymmetric lens is set in the optical path of the asymmetric laser beam through the multi-degree-of-freedom adjustable frame, and is used to continuously or segmentally dynamically shape the spot shape of the asymmetric laser beam.

2. The dynamic shaping device for a non-centrosymmetric laser beam as described in claim 1, characterized in that, The multi-degree-of-freedom adjustable frame is also used to keep the center position of the non-centrosymmetric lens unchanged while controlling the non-centrosymmetric lens to generate a pitch angle within a preset angle in the beam propagation direction, thereby changing the position of the light spot.

3. The dynamic shaping device for a non-centrosymmetric laser beam as described in claim 1, characterized in that, It also includes a control unit, which is connected to the drive mechanism and is used to control the rotation angle and rotation speed of the non-centrosymmetric lens.

4. The dynamic shaping device for a non-centrosymmetric laser beam as described in claim 1, characterized in that, The non-centrosymmetric lens can be a single non-centrosymmetric lens or a combination of multiple non-centrosymmetric lenses.

5. A dynamic shaping method for a non-centrosymmetric laser beam, characterized in that, Includes the following steps: An asymmetric laser beam is generated using a laser output module; The multi-degree-of-freedom adjustable frame fixes the non-centrosymmetric lens on the optical platform, and the drive mechanism drives the multi-degree-of-freedom adjustable frame to control the non-centrosymmetric lens to rotate at any angle along the principal optical axis. The non-centrosymmetric lens, which is set in the optical path of the asymmetric laser beam by adjusting the frame with multiple degrees of freedom, can continuously or segmentally dynamically shape the spot shape of the asymmetric laser beam.

6. The dynamic shaping method for a non-centrosymmetric laser beam as described in claim 5, characterized in that, It also includes the following steps: The multi-degree-of-freedom adjustable frame, while keeping the center position of the non-centrosymmetric lens unchanged, controls the non-centrosymmetric lens to generate a pitch angle within a preset angle in the beam propagation direction, thereby changing the position of the light spot.

7. The dynamic shaping method for a non-centrosymmetric laser beam as described in claim 5, characterized in that, It also includes the following steps: The rotation angle and rotation speed of the non-centrosymmetric lens are controlled by a control unit connected to the drive mechanism.

8. The dynamic shaping method for a non-centrosymmetric laser beam as described in claim 5, characterized in that, The non-centrosymmetric lens can be a single non-centrosymmetric lens or a combination of multiple non-centrosymmetric lenses.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the dynamic shaping method for a non-centrosymmetric laser beam as described in any one of claims 5 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the dynamic shaping method for a non-centrosymmetric laser beam as described in any one of claims 5 to 8.

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