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Design method of free-form surface lens based on genetic algorithm

A curved lens and genetic algorithm technology, applied in the field of optics, can solve the problems of complex processing technology and low optical damage threshold of optical shaping components, and achieve the effect of stable convergence, high optical damage threshold, and favorable processing.

Active Publication Date: 2019-11-15
SHANGHAI JIAOTONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a free-form surface lens design method based on genetic algorithms, which is used to solve the problems of low optical damage threshold and complex processing technology of optical shaping elements in the prior art.

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  • Design method of free-form surface lens based on genetic algorithm
  • Design method of free-form surface lens based on genetic algorithm
  • Design method of free-form surface lens based on genetic algorithm

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Embodiment Construction

[0042] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0043] see Figure 1 to Figure 7 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and ratio of each component can be changed arbitrar...

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Abstract

The invention provides a free-form lens design method based on a genetic algorithm. The method is used for designing a free-form lens and achieving shaping of light intensity space distribution so asto meet the requirements of laser shot blasting, uniform illumination and the like. The algorithm is stable in convergence, the free-form surface obtained through calculation is smooth and continuous,and processing is facilitated; the transmission type free-form lens obtained through the method has a very high optical damage threshold value.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a method for designing free-form surface lenses based on genetic algorithms. Background technique [0002] Beam shaping is the control of the spatial intensity distribution of the beam, and it has a wide range of applications in the fields of uniform illumination and laser processing. The design methods of optical shaping elements are mainly divided into two categories: one is to use Fourier optics to design diffraction elements for optical shaping; the other is to use Snell's law and energy conservation according to the energy distribution of the incident beam and the energy distribution of the target beam. The law calculates the surface profile of the transmissive or reflective optics required for beam shaping. [0003] Optical design ideas using iterative optimization algorithms have been extensively studied and used to design optical diffraction elements for shaping and hom...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G02B3/00
Inventor 邓晓旭
Owner SHANGHAI JIAOTONG UNIV
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