Laser beam focusing integral form paraboloidal mirror

A technology of parabolic mirror and laser beam, which is applied in the direction of condenser, laser welding equipment, optics, etc. It can solve the problems of unfavorable laser material uniformity, easy degradation of adhesive, and difficult heat dissipation of adhesive, so as to improve the focusing quality and improve the The ability and heat dissipation ability, the effect of simple manufacturing process

Inactive Publication Date: 2008-09-03
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The main problem of this technology is that the reflective focusing mirror converges the laser beam into a circle, which is not conducive to the uniformity of the surface treatment of laser materials.
The problems of this technology are: the manufacture is complicated, and the adhesive is easily degraded and deteriorated by the irradiation of high-power laser beams; because the adhesive is not easy to dissipate heat, the small lens is easily deformed after absorbing the heat of the laser, thus affecting the focusing quality

Method used

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  • Laser beam focusing integral form paraboloidal mirror
  • Laser beam focusing integral form paraboloidal mirror
  • Laser beam focusing integral form paraboloidal mirror

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Embodiment Construction

[0014] A standard parabolic reflective focusing mirror in the prior art is as figure 1 As shown, the parallel light beam 3 incident on the parabolic mirror surface is all focused on the focal point 4, and the paraboloid equation of the mirror surface is y = x 2 + z 2 2 f , Among them, f is the focal length of the parabolic mirror. The method of making a standard parabolic reflector is as follows: place the substrate 1 on the disc of a high-precision lathe, control the distance between the center 2 of the processing surface of the substrate and the axis 5 of the lathe to be f, and the turning tool follows the parabolic equation under the control of the numerical control system y = z 2 ...

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Abstract

The invention provides a laser beam focusing integer type parabolic mirror, comprising mirror surface, each point on the surface satisfies the curved surface equation, wherein, (x,y,z) is one point on the rectangular axis, f is focus of the parabolic mirror, h is the distance between the center of the mirror surface and y axis, satisfying formular, or f<h<3f, D is clear aperture of the parabolic mirror. The parabolic mirror can focus the original laser beam to be strip type light spot of certain size with even light distribution, widely used for laser cutting, laser surface heat treating, laser quenching and the like field for processing material using high energy laser beam. The invention also provides a method for producing the laser beam focusing integer type parabolic mirror formed in one piece using a rotary type high accuracy machine tool, with features of simple technique, increased capacity of reflector for proofing the high power laser beam and heat-sinking capability, and improved focusing quality of laser beam.

Description

technical field [0001] The invention relates to the fields of laser processing and optoelectronic applications, in particular to an optical element for focusing and shaping laser beams. Background technique [0002] The optical element that focuses and shapes the original high-power laser beam into a narrow strip spot with uniform energy distribution is mainly used in laser cutting, laser surface heat treatment, laser quenching and laser spraying and other fields that require high-energy laser beams for material surface treatment. [0003] At present, in the surface heat treatment of laser materials, it is often necessary to process some materials with certain surface morphology. Due to the uneven distribution of laser beam intensity, it is not suitable for direct application to the requirements of surface heat treatment. It is necessary to focus and shape the laser beam to obtain a beam with a suitable shape and uniform intensity distribution, so that the entire surface of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B19/00B23B1/00B23K26/04
Inventor 陈培锋王英罗曦周乐徐思恩
Owner HUAZHONG UNIV OF SCI & TECH
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