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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: 2010-07-07
SUZHOU LEAD LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • Method and device for realizing laser focusing
  • Method and device for realizing laser focusing
  • Method and device for realizing laser focusing

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Embodiment 1

[0028] Embodiment 1: A method for realizing laser focusing, using the principle of reflection and focusing of mirrors and focusing mirrors, the spot of the laser beam is exchanged and focused in the radial direction in units of rings, including the following steps:

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

[0030] (2) Transform the inverted conical ring beam into a ring beam;

[0031] (3) Focusing the annular light beam to form an annular cone-shaped beam, and forming a conical hollow light-free zone in the middle of the annular cone-shaped beam to obtain a focused spot of hollow annular 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, and a second conical reflector 2 is arranged on the coaxial inside of the parabolic reflector 3. The conical reflector 2 is opposite to the apex of the first conical reflector 1 and the bottom surfaces are paralle...

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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, laser processing and manufacturing science and technology is an emerging multi-disciplinary 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 of high-performance parts. Technology is an important part of advanced manufacturing technology and an international frontier research direction in this discipline. [0003] The principle of laser processing technology is to convert light energy and heat energy instantly in a small area to complete the rapid metallurgical process of materials. In this technology, there is a key technology, that is, the focusing technology of the laser beam. The laser beam emitted by the laser has a large diamet...

Claims

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Application Information

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Patent Type & Authority Applications(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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