Total reflection type halation-eliminating and light-beam-homogenizing optical system

A total reflection, optical system technology, applied in the direction of optics, optical components, instruments, etc., can solve the problems affecting the uniformity of laser energy distribution, and achieve the effect of ensuring the uniformity of spot energy distribution and novel shape and structure design

Inactive Publication Date: 2017-05-31
SHANGHAI EMPOWER AUTOMATION TECH CO LTD
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Problems solved by technology

This will affect the reflective beam homogenization shaping ...

Method used

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  • Total reflection type halation-eliminating and light-beam-homogenizing optical system
  • Total reflection type halation-eliminating and light-beam-homogenizing optical system
  • Total reflection type halation-eliminating and light-beam-homogenizing optical system

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Embodiment

[0031]The far focus of the first hyperboloid reflector 1 coincides with the focus of the first off-axis parabolic mirror 2, and the output point 7 of the fiber output laser coincides with the near focus of the first hyperboloid reflector 1. Under the normal incidence of the fiber output laser , is reflected by the first hyperboloid mirror 1 and diverges, and the divergent beam passes through the first off-axis parabolic mirror 2 to reflect and form a collimated beam, and the roundness of the collimated beam remains unchanged, depending on the incident light source. The first curved mirror array 3 has the same array unit size as the second curved mirror array 4, and the focal length ratio of the array unit focal length of the first curved mirror array 3 to the array unit focal length of the second curved mirror array 4 If it is greater than 1, each array unit corresponds one by one, and the distance between the centers of the two mirrors depends on the focal length of the array ...

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Abstract

The invention discloses a total reflection type halation-eliminating and light-beam-homogenizing optical system. The total reflection type halation-eliminating and light-beam-homogenizing optical system comprises a first hyperboloid reflecting mirror, a first off-axis parabolic mirror, a first curved-surface reflecting mirror array, a second curved-surface reflecting mirror array, a second off-axis parabolic mirror and a second hyperboloid reflecting mirror and is characterized in that the light beam deflection angles of all the mirrors are 90 degrees, and the central symmetry faces of all the mirrors are located on the same plane. The total reflection type halation-eliminating and light-beam-homogenizing optical system novel in structural design is based on the combining features of the hyperboloid reflecting mirrors and the off-axis parabolic mirrors, the light beam homogenizing and shaping and halation eliminating features of the two reflecting mirror arrays and the direct water cooling performance and good thermal conductivity of the metal mirrors, is applicable to the homogenizing and shaping of optical output type laser, especially has advantages in the light beam homogenizing of myriawatt, high-power and large-optical-fiber-diameter optical fiber output type laser devices, can greatly increase the application performance of laser machining such as laser cladding and quenching.

Description

technical field [0001] The invention relates to the technical field of beam shaping in laser processing, in particular to a total reflection extinction halo beam homogenization optical system. Background technique [0002] Laser processing technology covers various laser processing technologies such as laser cutting, welding, quenching, drilling, micromachining, etc., and utilizes the basic characteristics of the interaction between laser and matter. Due to the advantages of non-contact between laser beam and processing materials, processing speed and quality, laser processing technology is an irreplaceable high-tech. [0003] At present, laser cutting occupies the main position of the entire laser processing industry, among which fiber output laser cutting is the most important. With the increase of laser power, laser welding, cladding, quenching and other processing technologies such as high-power fiber laser output have gradually been expanded and improved more widely, c...

Claims

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Application Information

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IPC IPC(8): G02B27/09
CPCG02B27/0983G02B27/0994
Inventor 邵华江李思佳李思泉
Owner SHANGHAI EMPOWER AUTOMATION TECH CO LTD
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