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Optical module and laser cutting device

A technology of optical module and optical path, which is applied in the field of engineering optics, can solve the problems affecting the processing effect of materials and achieve high-quality focusing effect

Active Publication Date: 2017-05-24
东莞市盛雄激光先进装备股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides an optical module, which is used to effectively solve the problem that the light leakage in the center of the existing axicon prism affects the processing effect of the material

Method used

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  • Optical module and laser cutting device

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Embodiment Construction

[0036] The embodiment of the present invention provides an optical module, which is used to effectively solve the problem that the light leakage in the center of the existing axicon prism affects the processing effect of the material.

[0037] The invention provides an optical module, which is used to effectively solve the problem that the light leakage at the center of the existing axicon prism affects the processing effect of materials.

[0038] The optical module provided by the present invention includes:

[0039] coaxially arranged axicon prism A, beam expander L2, first lens L1, condenser lens L3 and reflector M;

[0040] The axicon prism A is placed at the beginning of the optical path, and its tapered part is set away from the laser to generate a ring-shaped spot;

[0041] The first lens L1 is placed at the rear end of the axicon prism A, and is used for ring-focusing the ring-shaped spot;

[0042] The beam expander L2 is placed at the front end of the first lens L1;...

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Abstract

The invention discloses an optical module, and effectively solves the problem that the material machining effect is influenced by light leakage at the center of a conventional axial cone prism. The optical module disclosed by the invention comprises an axial cone prism (A), a beam expander (L2), a first lens (L1), a collecting lens (L3) and a reflecting lens (M) which are arranged coaxially, wherein the axial cone prism (A) is arranged at the starting end of an optical path; the conical part of the axial cone prism (A) is deviated from a laser; the axial cone prism (A) is used for producing an annular light spot; the first lens (L1) is arranged at the rear end of the axial cone prism (A) and used for performing ring focusing on the annular light spot; the beam expander (L2) is arranged at the front end of the first lens (L1); the collecting lens (L3) is arranged at the tail end of the optical path; the reflecting lens (M) is arranged at the rear end of the axial cone prism (A) and at the front end of the collecting lens (L3); and an inclined angle between the reflecting surface of the reflecting lens (M) and the optical axis is greater than 0 degree.

Description

technical field [0001] The invention relates to the technical field of engineering optics, in particular to an optical module and a laser cutting device. Background technique [0002] Laser cutting is the use of high-power density laser beams to irradiate the material to be cut, so that the material is quickly heated to the vaporization temperature, and evaporates to form holes. As the beam moves to the material, the holes continuously form a narrow width (such as about 0.1mm). seam to complete the cutting of the material. [0003] Compared with Gaussian beams, Bessel beams with small diameter of focused beams and long depth of focus are very suitable for taper-free cutting of high-hardness and brittle materials, high-diameter-depth-ratio drilling, and optical path design for laser micromachining. The lateral light intensity distribution of the Bessel beam is manifested as a central spot and a series of concentric rings. The Bessel beam that can be realized physically has a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/064B23K26/073
CPCB23K26/0648B23K26/0734
Inventor 陶雄兵
Owner 东莞市盛雄激光先进装备股份有限公司
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