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Method for calculating parameter of laser beam expander

A calculation method and laser beam expansion technology, applied in digital computer parts, calculation, computer, etc., can solve the problems of poor precision and low efficiency, and achieve the effect of convenient lens selection

Active Publication Date: 2011-10-12
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If every time the laser beam used is replaced, it must be calculated manually according to the formula, not only the efficiency is low but the accuracy is poor

Method used

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  • Method for calculating parameter of laser beam expander
  • Method for calculating parameter of laser beam expander
  • Method for calculating parameter of laser beam expander

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Embodiment Construction

[0013] In order to make the purpose and features of the present invention more obvious and understandable, the present invention will be further described by giving preferred embodiments and in conjunction with the accompanying drawings.

[0014] Such as figure 2 Shown is a flow chart of the method for calculating the parameters of the laser beam expander of the present invention.

[0015] Step 10, measuring the beam divergence angle parameter.

[0016] For an ideal laser source, the divergence angle is zero, but for an actual laser source, the beam divergence angle of the laser is often not zero. The beam divergence angle parameters here include the total divergence angle of the beam, the coherent divergence angle and the incoherent divergence angle, as follows: : θ=Θ+α·d, where θ is the total divergence angle of the beam, α is the divergence angle of the coherent beam, Θ is the divergence angle of the incoherent beam, and d is the spot size. Such as image 3 Shown is the...

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PUM

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Abstract

The invention discloses a method for calculating parameter of a laser beam expander, which can calculate parameter of the laser beam expander automatically. The method comprises the following steps: measuring parameter of a beam divergence angle; inputting the parameter of beam divergence angle, beam sizes before and after expansion into a laser beam expander calculator; calculating parameter of the laser beam expander through the laser beam expander calculator automatically.

Description

technical field [0001] The invention relates to a calculator for parameters of a laser beam expander, in particular to a calculation method capable of automatically calculating the parameters of a laser beam expander. Background technique [0002] In the process of laser processing, the energy of the laser at the focal point is usually required to be very concentrated to ensure the energy density of the laser processing focal point so that the laser can work effectively. In practical work, laser beam expanders are usually used to increase the diameter of the beam and reduce the divergence angle of the beam. Among them, the lens beam expander is the most traditional and widely used laser beam expander. Such as figure 1 Shown is a block diagram of a laser beam expander. Among them, O is a point light source, the negative lens A and the positive lens C are placed on one side of the point light source O in turn, and the focal lengths are F A and Fc. [0003] Different laser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F15/02G02B27/09
Inventor 李仲禹
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD