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Device for converting the profile of laser radiation into laser radiation with a rotationally symmetric intensity distribution

A technology of rotational symmetry and laser radiation, applied in optics, optical components, instruments, etc., can solve problems such as expensive structures, mask loss, and complex equipment

Active Publication Date: 2017-04-05
LIMO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this case, the complex and expensive structure of the device proves to be disadvantageous
Also, due to the use of mask formation there may be considerable loss

Method used

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  • Device for converting the profile of laser radiation into laser radiation with a rotationally symmetric intensity distribution
  • Device for converting the profile of laser radiation into laser radiation with a rotationally symmetric intensity distribution
  • Device for converting the profile of laser radiation into laser radiation with a rotationally symmetric intensity distribution

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Experimental program
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Embodiment Construction

[0021] To explain, in figure 1 Draw the Kadir coordinate system in.

[0022] The drawn device includes a lens array 1 and a lens 2 in a Fourier layout. Here, the distance of the lens 2 from the lens array 1 in the Z direction and the distance of the lens 2 from the working plane 3 extending in the X-Y plane in the Z direction respectively correspond to the focal length f of the lens 2.

[0023] The end of the optical fiber 4 serves as a laser source. The laser light 5 propagating through the optical fiber 4 can be generated by any laser. The laser radiation 5 emitted from the optical fiber 4 in the positive Z direction is collimated by a collimating device 6 which is schematically indicated. The collimation device 6 can be used in the simplest case figure 1 It is constructed as a plano-convex spherical lens.

[0024] There is totally the possibility of omitting the collimating device or configuring the collimating device differently so that the laser radiation is not collimated.

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PUM

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Abstract

Device for converting the profile of laser radiation (5) into laser radiation (5) with a rotationally symmetrical intensity distribution, such as an M-shaped distribution or a rotationally symmetrical flat-top distribution, comprising a At least one lens array (1) through which the laser radiation (5) to be converted can pass, and an optical arrangement which can direct the laser radiation (5) passing through the at least one lens array (1) Introduced into the working plane ( 3 ) and / or superimposed at least in places in the working plane ( 3 ), wherein the lenses ( 7 ) of at least one lens array ( 1 ) are arranged coaxially or concentrically with one another.

Description

Technical field [0001] The invention relates to a device for converting the profile of laser radiation into laser radiation with rotationally symmetrical intensity distribution. Background technique [0002] Definition: The propagation direction of laser radiation refers to the average propagation direction of laser radiation, especially when the laser radiation is not a plane wave or is at least partially divergent. Laser beams, beams, sub-beams or beams (unless otherwise explicitly stated) refer to not the ideal beams of geometric optics, but the actual beams, such as not having an infinitely small beam cross-section but an extended beam Beam cross section of the laser beam. The intensity profile of the laser radiation is called an M-shaped distribution or an M-shaped intensity distribution or an M-shaped profile, and the cross section of the laser radiation has a smaller intensity in the middle than in one or more eccentric regions. The flat top distribution or flat top inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09
CPCG02B27/0927G02B27/0961G02B27/0983G02B27/09
Inventor I·米科利阿维J·迈因席恩T·米特拉
Owner LIMO GMBH