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A method and laser processing system for producing light spots with special light intensity distribution

A light intensity distribution and special light technology, applied in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of complex design process and high cost of spot shaping technology, and achieve low cost, wide application range and flexibility strong effect

Active Publication Date: 2019-08-20
旭致科技深圳有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present invention provides a method and a laser processing system for generating a spot with a special light intensity distribution, which can solve the problems of high cost and complicated design process of the existing spot shaping technology

Method used

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  • A method and laser processing system for producing light spots with special light intensity distribution
  • A method and laser processing system for producing light spots with special light intensity distribution
  • A method and laser processing system for producing light spots with special light intensity distribution

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Embodiment 1

[0044] figure 1 It is a schematic flowchart of a method for generating a spot with a special light intensity distribution provided by Embodiment 1 of the present invention, please refer to figure 1 , the method includes:

[0045] 110. Acquire light intensity distribution parameters of the target light spot.

[0046] In this embodiment, the "target spot" refers to a special spot set to achieve a certain function, and the specific shape, size, light intensity distribution and other characteristics of the spot can be determined according to different application scenarios. For example: in the process of laser processing, if a ring-shaped workpiece needs to be heated, the target spot can be set as a ring-shaped spot that matches the ring-shaped workpiece; or, if it is necessary to mark a uniform on the surface of the object If there is a square groove, the target spot can be set as a square flat-top spot. In addition, the "light intensity distribution parameter" refers to the l...

Embodiment 2

[0060] The difference between this embodiment and Embodiment 1 is that in this embodiment, after the step of superimposing the N beams of incoherent light beams to obtain a special spot with a special light intensity distribution, the special spot can also be Collimation and focus processing.

[0061] In this embodiment, the special light spot is collimated, and the special light spot is converted into collimated light / parallel light, and then the collimated light is focused, depending on the focal length selected by the collimation and focusing lens , can form a larger or smaller special spot. During the process of collimating and focusing, the characteristics of the original special spot will not be changed.

[0062] The beneficial effect of this embodiment is that: by performing collimation and focusing processing on the obtained special light spot, a larger or smaller light spot consistent with the characteristics of the original special light spot can be obtained, which ...

Embodiment 3

[0064] Figure 4 It is a schematic structural diagram of a laser processing system provided by Embodiment 3 of the present invention, please refer to Figure 4 , the laser processing system 4 includes:

[0065] A laser 41, configured to generate N beams of incoherent light beams, where N is a positive integer;

[0066] The simulation device 42 is used to obtain the light intensity distribution parameters of the target spot, and determine the position parameters of the exit ends of the N beams of incoherent light beams according to the light intensity distribution parameters;

[0067] The laser beam combiner 43 is configured to superimpose the N beams of incoherent light beams to obtain a superimposed special spot with a special light intensity distribution.

[0068] In this embodiment, the laser 41 can be various types of lasers, such as semiconductor lasers, solid-state lasers, fiber lasers, gas lasers, etc., and the number can be one or more. In some embodiments, the lase...

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Abstract

The invention relates to the technical field of laser processing technology, and particularly discloses a method for producing a light spot with special light intensity distribution and a laser processing system. The method comprises the steps that the light intensity distribution parameters of the target spot are obtained; the position parameters of emitting-out ends of N beams of incoherent light beams are determined according to the light intensity distribution parameters, wherein N is a positive integer; and the N beams of incoherent light beams are superimposed, the special light spot with special light intensity distribution and after being superposed is obtained. According to the method for producing the light spot with special light intensity distribution and the laser processing system, the light spot with special light intensity distribution can be obtained under the condition of without needing other auxiliary design, the cost is low, any light spot with special light intensity distribution can be formed according to requirements, flexibility is high, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a method for generating light spots with special light intensity distribution and a laser processing system. Background technique [0002] Laser processing technology is a processing technology that uses the characteristics of the interaction between the laser beam and the material to cut, weld, surface treat, drill and micro-process materials. It is the most common application of laser systems. In the field of laser processing technology, in order to achieve a special or better processing effect, it is necessary to adjust the light intensity distribution of the laser spot, ie, spot shaping. Existing spot shaping techniques include: [0003] 1. Based on traditional discrete optical components, by selecting a suitable lens combination, the phase and intensity of light are controlled to achieve the purpose of spot shaping. The disadvantage of this method is that each opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/073
Inventor 张丽娟
Owner 旭致科技深圳有限公司
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