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A method and device for realizing laser focusing

An implementation method and laser technology, which are applied in the directions of laser welding equipment, optics, optical components, etc., to achieve the effect of smaller gradient and uniform energy distribution

Inactive Publication Date: 2012-02-15
SUZHOU LEAD LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a method and device for realizing laser focusing, which solves the deficiencies in the existing laser focusing technology

Method used

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  • A method and device for realizing laser focusing
  • A method and device for realizing laser focusing
  • A method and device for realizing laser focusing

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Embodiment 1

[0028] Embodiment 1: A method for realizing laser focusing, using the reflection and focusing principle of a mirror and a focusing mirror to exchange and focus the spot of the laser beam in the radial direction in units of a ring, including the following steps:

[0029] (1) Reflect the laser beam into an inverted cone ring beam;

[0030] (2) Convert the inverted cone ring beam into a ring beam;

[0031] (3) Focus the ring beam to form a ring cone beam, and form a cone hollow no-light area in the middle of the ring cone beam to obtain a focused spot of the hollow ring light.

[0032] See figure 1 As shown, a laser focusing device includes a first conical reflector 1 and a parabolic reflector 3 arranged in parallel. A second conical reflector 2 is coaxially provided on the inner side of the parabolic reflector 3. The top of the cone mirror 2 is opposite to the first cone mirror 1 and the bottom surface is parallel to each other, the sum of the internal angles of the second cone mirror 2...

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Abstract

The invention discloses a method for realizing laser focusing, which utilizes reflection of a reflector and focusing of a focus lens to exchange an inner position and an outer position of a light spot of a laser beam in rings along the radial direction and to focalize. The method is characterized by comprising the following steps: the laser beam is reflected to a turbinate annular beam; the turbinate annular beam is converted into an annular beam; the annular beam is focused, so as to form an annular conical beam, and a hollow conical dark area is formed in the middle of the annular conical beam, thus obtaining a focusing spot of hollow annular light. The method solves the defects of laser focusing in the prior art and obtains a focusing spot with strong light encompassing weak light, almost uniform energy distribution and small gradient, thus improving the processing effect.

Description

Technical field [0001] The invention relates to the field of laser processing, in particular to a method and device for realizing laser focusing. Background technique [0002] In the current modern production, the science and technology of laser processing and manufacturing is an emerging multi-science cross-engineering science that uses focused high-energy laser beams for special processing of high-performance metal parts, preparation of high-performance materials, and direct forming and manufacturing of high-performance parts. Technology is an important part of advanced manufacturing technology and an international frontier research direction in this subject field. [0003] The principle of laser processing technology is: instantaneous conversion of light energy and heat energy in a small area to complete the rapid metallurgical process of materials. In this technology, there is a key technology, the laser beam focusing technology. The laser beam emitted by the laser has a larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09B23K26/42B23K26/70
Inventor 李春生石世宏傅戈雁刘嘉蔡齐飞
Owner SUZHOU LEAD LASER TECH
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