Laser cleaning device

A technology of laser cleaning and laser beams, applied in cleaning methods and appliances, chemical instruments and methods, etc., can solve problems such as low engineering practicability, inability to improve off-the-shelf systems, difficulty in ensuring beam collimation, etc., achieve long focal depth, increase Depth of focus, efficient cleaning effect

Inactive Publication Date: 2020-09-29
武汉光谷航天三江激光产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a laser cleaning device, which solves the problem that the existing system cannot be improved in the prior art, the engineering practicability is low, and only an approximate Bessel collimated annular beam can be obtained, and the collimation of the beam Difficult technical issues

Method used

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Embodiment 1

[0028] For a laser cleaning device provided in an embodiment of the present invention, please refer to Figure 1-3 , the laser cleaning device includes:

[0029] A laser generating device 1, which emits a laser beam;

[0030] Specifically, the laser generating device 1 may be an ultraviolet laser, and the laser wavelength is 248nm or 308nm. Since the ultraviolet wavelength is relatively short, and the depth of focus is proportional to the laser wavelength, the focal depth of the corresponding focused spot is doubled. The laser wavelength of the laser 1 can also be selected from other wavelength lasers, such as 10.6um, 532nm or other laser wavelengths, depending on the cleaning material.

[0031] A collimating mirror group 2, the collimating mirror group 2 receives the laser beam and outputs a collimated beam;

[0032] Specifically, the collimating lens group 2 is composed of single or multiple lenses, the collimating lens group 2 is a system for obtaining a high-collimation ...

Embodiment 1

[0058] With regard to Embodiment 1, the embodiment of the present application also provides a method for using a laser cleaning device, which is applied to the laser cleaning device described in Embodiment 1, specifically including:

[0059] Before using the device, try to keep the workpiece 5 to be processed directly in front of the light outlet of the scanning focusing system 4. After starting the device, the laser generating device 1 outputs a Gaussian beam or a flat-top beam or other multi-mode beams, from the The laser beam emitted by the laser generating device 1 has a certain divergence angle, and the beam is output as a collimated beam after being passed through the collimating lens group 2, and the collimated beam is transformed into an infinite beam after being shaped and adjusted by the beam shaping element 3. Diffraction Bessel beam, the non-diffraction Bessel beam is focused on the surface of the workpiece 5 to be processed by the scanning focusing system 4, the fo...

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Abstract

The embodiment of the invention provides a laser cleaning device which comprises a laser generating device, a collimating lens group, a beam shaping element and a scanning focusing system. The laser generating device emits a laser beam; the collimating lens group receives the laser beam and outputs a collimated beam; the beam shaping element receives the collimated beam output by the collimating lens group and converts the collimated beam into a Bessel beam; and the scanning focusing system focuses the Bessel beam on the surface of a workpiece to be cleaned. The effects of lengthening the focal depth and improving light spot distribution are achieved through the beam shaping element, the optimized cleaning process is favorably realized in laser cleaning, and the technical effect of efficiently cleaning workpieces with large surface depth changes is achieved.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to a laser cleaning device. Background technique [0002] In recent years, with the enhancement of people's awareness of environmental protection, it has brought huge challenges to the development of the cleaning industry worldwide. Various cleaning technologies that are beneficial to environmental protection have emerged, and laser cleaning technology is one of them. The so-called laser cleaning technology refers to the use of high-energy laser beams to irradiate the surface of the workpiece, so that the dirt, rust or coating on the surface evaporates or peels off instantly, and effectively removes the surface attachment or surface coating of the cleaning object at a high speed, so as to achieve a clean process. . In the prior art, multi-annular curved surfaces and focusing curved surfaces are superimposed on each other in a coaxial manner, and the long focal depth of la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B7/00
CPCB08B7/0042
Inventor 刘娟娟何崇文余海龙王启明李立坤徐会明周瑞胡网勤安旭彤
Owner 武汉光谷航天三江激光产业技术研究院有限公司
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