Laser multi-focus parallel processing method, device, equipment, storage medium and program product

Abstract

The invention discloses a laser multi-focus parallel machining method, device and equipment, a storage medium and a program product, and relates to the technical field of laser machining.The laser multi-focus parallel machining method comprises the steps that an initial superposition phase is obtained; performing iteration on the initial superposition phase through Fourier transform and inverse Fourier transform to obtain a target superposition phase; and superposing the target superposition phase to the to-be-processed laser to obtain multi-focus processing laser. Due to the fact that the target superposition phase is obtained to be superposed with the to-be-processed laser, the processed multi-focus processing laser is obtained, multi-focus parallel processing is achieved, and the processing time is effectively shortened.

Description

Technical Field

[0001] The present application relates to the field of laser processing technology, and in particular to a laser multi-focus parallel processing method, device, equipment, storage medium and program product. Background Art

[0002] Laser processing technology can cut, weld, punch, surface treat and micro-process materials. Due to its high efficiency, precision and pollution-free characteristics, it has become an indispensable part of modern manufacturing. With the transformation and upgrading of the global manufacturing industry and the trend of intelligent and green development, laser processing technology will usher in a broader market space and development prospects.

[0003] In the field of laser processing, a galvanometer scanning laser processing method is usually used for processing, which has low processing efficiency for small-sized graphics. Summary of the invention

[0004] The main purpose of this application is to provide a laser multi-focus parallel processing method, device, equipment, storage medium and program product, aiming to solve the technical problem of low processing efficiency of traditional laser processing methods for small-size graphics.

[0005] To achieve the above objectives, the present application proposes a laser multi-focus parallel processing method, which comprises:

[0006] Get the initial superposition phase;

[0007] Iterate the initial superposition phase by Fourier transform and inverse Fourier transform to obtain a target superposition phase;

[0008] The target superposition phase is superimposed on the laser to be processed to obtain a multi-focus processing laser.

[0009] In one embodiment, the step of iterating the initial superposition phase by Fourier transform and inverse Fourier transform to obtain the target superposition phase includes:

[0010] Acquire a first complex amplitude; the first complex amplitude is the complex amplitude of the initial superposition phase;

[0011] Performing Fourier transform on the first complex amplitude to obtain a second complex amplitude; the second complex amplitude is the complex amplitude of the focus plane;

[0012] If the second complex amplitude satisfies an iteration termination condition, a target superposition phase is obtained based on the second complex amplitude.

[0013] In one embodiment, the step of obtaining the first complex amplitude includes:

[0014] Obtaining the initial amplitude of the laser to be processed;

[0015] The first complex amplitude is determined by the initial amplitude and the initial superimposed phase.

[0016] In one embodiment, after the step of performing Fourier transform on the first complex amplitude to obtain the second complex amplitude, the method further includes:

[0017] If the second complex amplitude does not satisfy the iteration termination condition, performing an inverse Fourier transform on the second complex amplitude to obtain a first complex amplitude after the initial superposition phase is updated;

[0018] Based on the first complex amplitude after the initial superposition phase update, the step of performing Fourier transform on the first complex amplitude to obtain a second complex amplitude is returned.

[0019] In one embodiment, the formula for determining the first complex amplitude through the initial amplitude and the initial superimposed phase is as follows:

[0020]

[0021] Among them, V j is the first complex amplitude, A j is the initial amplitude of the laser to be processed, is the initial superposition phase of the laser to be processed.

[0022] In one embodiment, the step of obtaining an initial superposition phase includes:

[0023] Obtaining the incident phase of the laser to be processed;

[0024] The incident phases are superimposed based on the phase diagram of the spatial light modulator to obtain an initial superimposed phase.

[0025] In addition, to achieve the above-mentioned purpose, the present application also proposes a laser multi-focus parallel processing device, the laser multi-focus parallel processing device comprising:

[0026] In addition, to achieve the above-mentioned objectives, the present application also proposes a laser multi-focus parallel processing device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the laser multi-focus parallel processing method as described above.

[0027] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the laser multi-focus parallel processing method described above are implemented.

[0028] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the laser multi-focus parallel processing method described above are implemented.

[0029] One or more technical solutions proposed in this application have at least the following technical effects:

[0030] The present application obtains an initial superposition phase; iterates the initial superposition phase through Fourier transform and inverse Fourier transform to obtain a target superposition phase; superimposes the target superposition phase on the laser to be processed to obtain a multi-focus processing laser. Since the target superposition phase is obtained to be superimposed with the laser to be processed to obtain the processed multi-focus processing laser, multi-focus parallel processing is achieved, effectively shortening the processing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 A schematic diagram of a process flow provided for Embodiment 1 of the laser multi-focus parallel processing method of the present application;

[0034] Figure 2 A schematic diagram of a process flow provided for Embodiment 2 of the laser multi-focus parallel processing method of the present application;

[0035] Figure 3 A schematic diagram of the optical path of laser processing in one implementation of the present application;

[0036] Figure 4 A schematic diagram of a laser processing process in one implementation of the present application;

[0037] Figure 5 A schematic diagram of a process flow provided for Embodiment 3 of the laser multi-focus parallel processing method of the present application;

[0038] Figure 6 This is a schematic diagram of the module structure of the laser multi-focus parallel processing device according to an embodiment of the present application;

[0039] Figure 7 Schematic diagram of the equipment structure of the hardware operating environment involved in the laser multi-focus parallel processing method in the embodiment of the present application.

[0040] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0042] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0043] The main solution of the embodiment of the present application is: obtain an initial superposition phase; iterate the initial superposition phase through Fourier transform and inverse Fourier transform to obtain a target superposition phase; superimpose the target superposition phase on the laser to be processed to obtain a multi-focus processing laser.

[0044] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as laser processing control equipment, industrial computers, etc., or an electronic device that can realize the above functions, virtual devices, etc. The following takes the laser multi-focus parallel processing equipment (hereinafter referred to as processing equipment) as an example to illustrate this embodiment and the following embodiments.

[0045] Based on this, the embodiment of the present application provides a laser multi-focus parallel processing method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the laser multi-focus parallel processing method of the present application.

[0046] In this embodiment, the laser multi-focus parallel processing method includes steps S10 to S30:

[0047] Step S10, obtaining an initial superposition phase;

[0048] It should be noted that phase is a parameter that can be used to describe the vibration state of the laser to be processed in space. The above-mentioned initial superposition phase can be the initial superposition phase of the laser to be processed, or it can be the phase obtained by superimposing the initial superposition phase of the laser to be processed, and the embodiments of the present application are not limited to this.

[0049] In some implementations of the embodiments of the present application, the embodiments of the present application can realize phase superposition of the laser to be processed through a spatial light modulator (SLM). Phase superposition through a spatial light modulator can realize multi-focus parallel processing of the laser, that is, processing multiple areas or structures at the same time, which significantly improves the efficiency of laser processing and reduces production costs.

[0050] It should be noted that the spatial light modulator is a dynamic component that can change the amplitude, polarization and phase of the incident light under the control of an external signal. The input of the external signal can be controlled by the processing equipment of the embodiment of the present application or by other equipment, and the embodiment of the present application does not limit this.

[0051] In some implementations of the embodiments of the present application, the step of obtaining an initial superimposed phase includes: obtaining an incident phase of the laser to be processed; and superimposing the incident phase based on a phase diagram of a spatial light modulator to obtain an initial superimposed phase.

[0052] In an embodiment of the present application, a user can select or generate a phase map required for laser processing through processing equipment, and send the phase map to the spatial light modulator, so that the spatial light modulator can perform phase superposition on the laser to be processed according to the phase map, and thereby obtain the laser to be processed after phase superposition and the corresponding initial superposition phase.

[0053] It should be noted that the spatial light modulator is used in the embodiment of the present application to generate multiple focal points by performing spatial phase modulation on the input laser to be processed. The multi-focal laser generated by the method of the present application is in the same xy plane, realizing multi-focal parallel processing and improving processing efficiency.

[0054] Step S20, iterating the initial superposition phase through Fourier transform and inverse Fourier transform to obtain a target superposition phase;

[0055] Step S30, superimposing the target superimposed phase onto the laser to be processed to obtain a multi-focus processing laser.

[0056] In the embodiment of the present application, Fourier transform and inverse Fourier transform can be used to process the initial superposition phase of the laser to be processed to achieve a specific processing goal. Through Fourier transform, the frequency component of the laser signal can be analyzed.

[0057] It is understood that the inverse Fourier transform, which is the inverse process of the Fourier transform, can be used to convert the signal in the frequency domain into the time domain. During the laser processing process, the laser signal can be reconstructed by the inverse Fourier transform to achieve a specific processing goal.

[0058] It should be noted that by iterating the initial superposition phase, the target superposition phase on the target plane can be obtained. Through the spatial light modulator, Fourier transform and inverse Fourier transform, the laser to be processed can be transformed into a multi-focus output laser, thereby realizing multi-focus processing of the workpiece to be processed (such as a ferrous metal business card) and obtaining the graphics required by the user.

[0059] It can be understood that after superimposing the target superposition phase of the laser to be processed by the spatial light modulator, a multi-focus processing laser can be obtained.

[0060] The embodiment of the present application obtains an initial superposition phase; iterates the initial superposition phase through Fourier transform and inverse Fourier transform to obtain a target superposition phase; and superimposes the target superposition phase on the laser to be processed to obtain a multi-focus processing laser. Since the target superposition phase is obtained to be superimposed with the laser to be processed to obtain the processed multi-focus processing laser, multi-focus parallel processing is achieved, which effectively shortens the processing time.

[0061] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 2 , Figure 2 A flow chart of Embodiment 2 of the laser multi-focus parallel processing method of the present application is provided. In the embodiment of the present application, the step of iterating the initial superposition phase by Fourier transform and inverse Fourier transform to obtain the target superposition phase includes:

[0062] Step S21, obtaining a first complex amplitude;

[0063] Step S22, performing Fourier transform on the first complex amplitude to obtain a second complex amplitude;

[0064] Step S23: if the second complex amplitude satisfies an iteration termination condition, obtaining a target superposition phase based on the second complex amplitude.

[0065] It should be noted that the first complex amplitude is the complex amplitude of the initial superimposed phase; and the second complex amplitude is the complex amplitude of the focus plane.

[0066] In the embodiment of the present application, the laser processing process can refer to Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of the optical path of laser processing in one implementation of the present application. Figure 4 This is a schematic diagram of the laser processing process in one implementation of the present application.

[0067] like Figure 3As shown, the embodiment of the present application generates the laser to be processed by a laser, and outputs the laser to be processed by a laser output head. Through the PBS beam splitter, the laser to be processed output by the laser output head can be split into beams to facilitate the modulation, demodulation and separation of the laser to be processed. The laser to be processed after passing through the PBS beam splitter can change the polarization direction of the laser to be processed by a half-wave plate. By matching the PBS beam splitter and the half-wave plate, it can be ensured that the polarization direction and power of the laser to be processed meet the processing requirements, thereby improving the reliability and accuracy of laser processing.

[0068] It is understandable that after the laser to be processed passes through the PBS beam splitter and the half-wave plate, the beam diameter and beam divergence angle of the laser to be processed can be changed by a beam expander. By adjusting the beam expander, the laser beam can be converted into a collimated beam, so that a high-power density light spot can be obtained by a focusing mirror later. The laser to be processed after being expanded by the beam expander can be reflected by a reflector to a laser processing device containing a spatial light modulator.

[0069] It should be understood that the user can select the graphics to be processed through the laser multi-focus parallel processing device, convert the graphics to be processed into a phase map, and load the phase map into the spatial light modulator. The spatial light modulator can phase modulate the input laser to be processed based on the phase map to achieve phase superposition of the laser, thereby obtaining a multi-focus processing laser, and realizing laser multi-focus parallel processing of the workpiece to be processed.

[0070] It is understandable that after obtaining the multi-focus processing laser through the spatial light modulator, the multi-focus processing laser can be precisely focused through a focusing lens (such as a 35mm focusing lens, etc.), thereby achieving real-time control of the focused light spot, so that the generated graphics are consistent with the graphics selected by the user. Specifically, a suitable focusing lens can be selected according to different application scenarios to achieve focusing of the multi-focus processing beam after phase modulation by the spatial light modulator.

[0071] It should be noted that a convex lens may be provided in the spatial light modulator of the embodiment of the present application. The convex lens provided in the spatial light modulator may realize Fourier transform of the laser to be processed.

[0072] It can be understood that the focusing process of the convex lens can be regarded as a mapping of spatial information from one plane to another plane. By focusing different parts of the light on different points, the transformation of spatial information from the phase map to the focusing plane is achieved.

[0073] Specifically, the embodiment of the present application can superimpose the phase determined based on the phase diagram on the incident phase of the laser to be processed to obtain an initial superimposed phase. The initial superimposed phase is Fourier transformed by a convex lens to obtain the pattern required by the user on the focusing plane.

[0074] In some implementations of the embodiments of the present application, the step of acquiring the first complex amplitude includes: obtaining an initial amplitude of the laser to be processed; and determining the first complex amplitude through the initial amplitude and the initial superimposed phase.

[0075] It should be noted that the first complex amplitude of the laser to be processed before Fourier transform can be obtained by the initial amplitude of the laser to be processed and the initial superposition phase after phase superposition. The formula for determining the first complex amplitude by the initial amplitude and the initial superposition phase is as follows:

[0076]

[0077] Among them, V j is the first complex amplitude, A j (x, y) is the initial amplitude of the laser to be processed, is the initial superposition phase of the laser to be processed.

[0078] In some embodiments of the present application, A j The value of (x,y) can be 1. An initial value, after Fourier transformation, the complex amplitude of the focus plane (that is, the second complex amplitude) can be obtained. Specifically, the obtained second complex amplitude U i It can be expressed by the following formula:

[0079]

[0080] Among them, A i (x, y) is the amplitude of the laser to be processed after Fourier transformation, is the phase of the laser to be processed after Fourier transform.

[0081] The embodiment of the present application obtains a first complex amplitude; performs Fourier transform on the first complex amplitude to obtain a second complex amplitude; if the second complex amplitude satisfies the iteration termination condition, the target superposition phase is obtained based on the second complex amplitude. Since the phase of the laser to be processed is modulated, the phase of the laser to be processed is controlled by a convex lens, thereby forming an image on the focusing plane, which improves the efficiency and accuracy of laser processing.

[0082] Based on the first embodiment and / or the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those of the above-mentioned first embodiment and / or the second embodiment can refer to the above introduction, and will not be repeated later. Figure 5 , Figure 5 A schematic flow chart of the third embodiment of the laser multi-focus parallel processing method of the present application.

[0083] like Figure 5 As shown, in the embodiment of the present application, after the step of performing Fourier transform on the first complex amplitude to obtain the second complex amplitude, the step further includes:

[0084] Step S100, if the second complex amplitude does not meet the iteration termination condition, performing an inverse Fourier transform on the second complex amplitude to obtain a first complex amplitude after the initial superposition phase is updated;

[0085] Step S200, returning to the step of performing Fourier transform on the first complex amplitude based on the first complex amplitude updated after the initial superposition phase, to obtain a second complex amplitude.

[0086] It should be noted that, in the embodiment of the present application, in order to make the second complex amplitude the optimal solution of the complex amplitude on the focal plane, an iteration termination condition can be set for the second complex amplitude. When the second complex amplitude satisfies the iteration termination condition, the target superposition phase can be obtained based on the second complex amplitude, thereby completing the processing of the laser to be processed. When the second complex amplitude does not meet the iteration termination condition, the second complex amplitude can be inverse Fourier transformed to obtain a new first complex amplitude, that is, to obtain the first complex amplitude after the initial superposition phase is updated.

[0087] It can be understood that, based on the first complex amplitude updated by the initial superposition phase, the updated first amplitude can be returned to the step of performing Fourier transform on the first complex amplitude to achieve iterative optimization of the second complex amplitude. Through repeated iterations, a second complex amplitude U that meets the compensation condition in the iteration can be finally obtained. m At this time, the second complex amplitude U m The corresponding phase That is, the target superimposed phase of the final iteratively calculated phase map F. By superimposing the final iteratively calculated phase map F on the laser to be processed, an output graph close to the target graph input by the user can be obtained.

[0088] Through the solution of the present application, the laser power setting can be adjusted accordingly according to the number of pattern points in the graph. For a graph with many pattern points, the laser power can be increased, and vice versa, the laser power can be reduced, thereby meeting the energy requirements of each point after the laser beam to be processed is divided into multiple intersection points.

[0089] It should be noted that when performing laser multi-focus parallel processing, there are three factors that affect the effect of parallel processing: 1. The distance from the SLM to the focusing lens; 2. The phase map loaded on the SLM; 3. The focal length of the focusing lens. The effects are affected by three aspects: 1. The spacing between adjacent focal points on the pattern; 2. The size of each focus; 3. The overall size of the pattern. When performing laser multi-focus processing, the embodiments of the present application can adjust these factors according to the processing pattern and the processing scene to achieve the best processing effect.

[0090] In the embodiment of the present application, if the second complex amplitude does not meet the iteration termination condition, the second complex amplitude is subjected to inverse Fourier transformation to obtain the first complex amplitude after the initial superposition phase update; based on the first complex amplitude after the initial superposition phase update, the process returns to the step of Fourier transformation of the first complex amplitude to obtain the second complex amplitude. Since the second complex amplitude is iterated to determine the phase diagram that needs to be superimposed on the laser to be processed, the accuracy of laser processing is improved.

[0091] This application also provides a laser multi-focus parallel processing device, please refer to Figure 6 , the laser multi-focus parallel processing device comprises:

[0092] A phase acquisition module 10, used to acquire an initial superposition phase;

[0093] A phase transformation module 20, configured to iterate the initial superposition phase through Fourier transformation and inverse Fourier transformation to obtain a target superposition phase;

[0094] The phase superposition module 30 is used to superimpose the target superposition phase onto the laser to be processed to obtain a multi-focus processing laser.

[0095] The laser multi-focus parallel processing device provided by the present application adopts the laser multi-focus parallel processing method in the above embodiment, which can solve the technical problem that the traditional laser processing method has low processing efficiency for small-sized graphics. Compared with the prior art, the beneficial effects of the laser multi-focus parallel processing device provided by the present application are the same as the beneficial effects of the laser multi-focus parallel processing method provided by the above embodiment, and the other technical features of the laser multi-focus parallel processing device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0096] The present application provides a laser multi-focus parallel processing device, which includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the laser multi-focus parallel processing method in the above-mentioned embodiment one.

[0097] Reference below Figure 7 , which shows a schematic diagram of the structure of a laser multi-focus parallel processing device suitable for implementing the embodiment of the present application. The laser multi-focus parallel processing device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7 The laser multi-focus parallel processing device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0098] like Figure 7 As shown, the laser multi-focus parallel processing device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the laser multi-focus parallel processing device are also stored in the RAM 1004. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 may allow the laser multi-focus parallel processing device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a laser multi-focus parallel processing device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have instead.

[0099] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0100] The laser multi-focus parallel processing device provided by the present application adopts the laser multi-focus parallel processing method in the above embodiment, which can solve the technical problem that the traditional laser processing method has low processing efficiency for small-sized graphics. Compared with the prior art, the beneficial effects of the laser multi-focus parallel processing device provided by the present application are the same as the beneficial effects of the laser multi-focus parallel processing method provided by the above embodiment, and the other technical features of the laser multi-focus parallel processing device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0101] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0102] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0103] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the laser multi-focus parallel processing method in the above-mentioned embodiment.

[0104] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0105] The computer-readable storage medium may be included in the laser multi-focus parallel processing device; or may exist independently without being assembled into the laser multi-focus parallel processing device.

[0106] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the laser multi-focus parallel processing device, the laser multi-focus parallel processing device:

[0107] Get the initial superposition phase;

[0108] Iterate the initial superposition phase by Fourier transform and inverse Fourier transform to obtain a target superposition phase;

[0109] The target superposition phase is superimposed on the laser to be processed to obtain a multi-focus processing laser.

[0110] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0111] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0112] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0113] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned laser multi-focus parallel processing method, and can solve the technical problem that the traditional laser processing method has low processing efficiency for small-sized graphics. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the laser multi-focus parallel processing method provided by the above-mentioned embodiment, and will not be repeated here.

[0114] The present application also provides a computer program product, including a computer program, which implements the steps of the laser multi-focus parallel processing method as described above when executed by a processor.

[0115] The computer program product provided by the present application can solve the technical problem that the traditional laser processing method has low processing efficiency for small-sized graphics. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the laser multi-focus parallel processing method provided by the above embodiment, which will not be described in detail here.

[0116] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A laser multi-focus parallel processing method, characterized in that: The method comprises: Get the initial superposition phase; Iterate the initial superposition phase by Fourier transform and inverse Fourier transform to obtain a target superposition phase; The target superposition phase is superimposed on the laser to be processed to obtain a multi-focus processing laser.

2. The laser multi-focus parallel processing method according to claim 1, characterized in that: The step of iterating the initial superposition phase by Fourier transform and inverse Fourier transform to obtain the target superposition phase comprises: Acquire a first complex amplitude; the first complex amplitude is the complex amplitude of the initial superposition phase; Performing Fourier transform on the first complex amplitude to obtain a second complex amplitude; the second complex amplitude is the complex amplitude of the focus plane; If the second complex amplitude satisfies an iteration termination condition, a target superposition phase is obtained based on the second complex amplitude.

3. The laser multi-focus parallel processing method according to claim 2, characterized in that: The step of obtaining the first complex amplitude comprises: Obtaining the initial amplitude of the laser to be processed; The first complex amplitude is determined by the initial amplitude and the initial superimposed phase.

4. The laser multi-focus parallel processing method according to claim 2, characterized in that: After the step of performing Fourier transform on the first complex amplitude to obtain the second complex amplitude, the method further includes: If the second complex amplitude does not satisfy the iteration termination condition, performing an inverse Fourier transform on the second complex amplitude to obtain a first complex amplitude after the initial superposition phase is updated; Based on the first complex amplitude after the initial superposition phase update, the step of performing Fourier transform on the first complex amplitude to obtain a second complex amplitude is returned.

5. The laser multi-focus parallel processing method according to claim 3, characterized in that: The formula for determining the first complex amplitude through the initial amplitude and the initial superimposed phase is as follows: Among them, V j is the first complex amplitude, A j is the initial amplitude of the laser to be processed, is the initial superposition phase of the laser to be processed.

6. The laser multi-focus parallel processing method according to claim 1, characterized in that: The step of obtaining the initial superposition phase comprises: Obtaining the incident phase of the laser to be processed; The incident phases are superimposed based on the phase diagram of the spatial light modulator to obtain an initial superimposed phase.

7. A laser multi-focus parallel processing device, characterized in that: The laser multi-focus parallel processing device comprises: A phase acquisition module, used to acquire an initial superposition phase; A phase transformation module, used for iterating the initial superposition phase through Fourier transformation and inverse Fourier transformation to obtain a target superposition phase; The phase superposition module is used to superimpose the target superposition phase on the laser to be processed to obtain a multi-focus processing laser.

8. A laser multi-focus parallel processing device, characterized in that: The device comprises: a memory, a processor and a laser multi-focus parallel processing program stored in the memory and executable on the processor, wherein the laser multi-focus parallel processing program is configured to implement the steps of the laser multi-focus parallel processing method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores a laser multi-focus parallel processing program, and when the laser multi-focus parallel processing program is executed by the processor, the steps of the laser multi-focus parallel processing method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the laser multi-focus parallel processing method according to any one of claims 1 to 6 are implemented.

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