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Single aspheric lens for laser Gaussian beam shaping

A technology of aspherical lens and Gaussian beam, which is applied in the direction of lens, optics, optical components, etc., can solve the problems of complex manufacturing process of diffractive optical devices, unfavorable industrial application, and difficult process control, etc., to achieve clear laser processing area and realize new The effect of simple distribution and structure

Active Publication Date: 2016-12-07
SHANDONG LASER TECH
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Problems solved by technology

However, diffractive optical devices are not conducive to industrial application due to factors such as complex manufacturing process, difficult process control, and high cost; while the beam shaping optical system designed with the principle of geometric optics has a relatively mature processing technology, which is conducive to solving industrial problems. application problem

Method used

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  • Single aspheric lens for laser Gaussian beam shaping
  • Single aspheric lens for laser Gaussian beam shaping
  • Single aspheric lens for laser Gaussian beam shaping

Examples

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Embodiment 1

[0025] Such as figure 1 As shown, the single aspherical lens used for laser Gaussian beam shaping is the lens front surface 1 and the lens rear surface 2 in order from the beam input side to the beam output side. The surface is a cylindrical surface, wherein the x-axis represents the optical axis of the beam shaping lens, and the lens is symmetrical to the optical axis x.

[0026] The lens is made of SK2 optical glass, and its refraction index to red light is 1.601681; the aperture of the lens is 2×38.0mm, and the side of the lens is a cylindrical surface with a bottom radius of 38.0mm.

[0027] The light intensity distribution of single aspheric lens is The red light beam is shaped, I 0 is the central light intensity, Gaussian spot radius y 0 =30mm, the outgoing beam is a top-hat beam with a spot radius of 36mm.

[0028] Both the lens front surface 1 and the lens back surface 2 are described by the following equations:

[0029] x = ...

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Abstract

The invention relates to a single aspheric lens for laser Gaussian beam shaping and belongs to the technical field of laser beam shaping. The single aspheric lens successively comprises a lens front surface and a lens rear surface in the beam incident direction. The lens front surface is an aspheric surface, the lens rear surface is a plane, and a lens side surface is a cylindrical surface. The lens front surface protrudes towards the beam output direction. The material of the lens is SK2 optical glass. The single aspheric lens is used for shaping a red light beam with light intensity distribution of I(y) = I0exp (-2y<2> / y0<0>) and a Gaussian spot radius of y0 = 30mm, wherein I0 is central light intensity and is an arbitrary constant value. An outgoing beam is a flat-topped beam with and a spot radius of 36mm.

Description

technical field [0001] The present invention relates to a single aspheric lens for Gaussian laser beam shaping, in particular to a red laser beam with a Gaussian distribution of light intensity and a spot radius of 30 mm to be shaped into a flat-topped beam with a uniform light intensity distribution and a spot radius of 36 mm The invention discloses a single aspheric lens, which belongs to the technical field of laser beam shaping. Background technique [0002] The flat-topped beam refers to the beam whose light intensity is uniformly distributed in the cross-section of the beam transmission direction, and the spatial distribution of the light intensity is shaped like a flat-topped top hat. Due to the uniform energy distribution, this type of beam is often required in some semiconductor laser processing technologies, such as in display, holography, lithography, optical storage, laser processing, laser medical and other applications. Since the light intensity of the laser b...

Claims

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Application Information

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IPC IPC(8): G02B3/02
CPCG02B3/02G02B27/0916G02B27/0927G02B27/0955
Inventor 秦华颜景川
Owner SHANDONG LASER TECH
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