Method of constructing ultrathin color optical lens based on artificial microstructure super surface

Abstract

The invention discloses a method of constructing an ultrathin color optical lens based on an artificial microstructure super surface, comprising the following steps: (1) calculating the phase distribution on an artificial microstructure super surface according to the position of a focus point needing emergence; (2) designing a rotational symmetry periodic structure for each center wavelength, and determining a specific phase value based on the phase gradient distribution; (3) designing a columnar structure of determined height as a basic unit of the artificial microstructure super surface, and designing a corresponding specific implementation structure; (4) randomly dividing the N regions of an entire lens into m parts, and ensuring that the number of regions in each part is roughly the same according to the need or ensuring that a certain ratio is achieved according to the specific need; (5) taking m selected regions to m corresponding lenses in step (3) to form new lenses; and (6) forming a filter array based on filters of corresponding working wavelengths on the lenses according to the specific wavelength of each region. A color optical lens constructed using the method has the advantages of being ultra-thin, bi-planar and easy to integrate.

Description

technical field [0001] The invention belongs to the fields of geometric optics and micro-nano optics, and in particular relates to a method for constructing ultra-thin color optical lenses based on artificial microstructure metasurfaces. Background technique [0002] Optical lenses are commonly used optical components in people's daily life, including cameras, microscopes, etc., and also play an important role in industrial production and national defense. Usually the lenses used are bulky and have at least one curved surface. However, with the development of science and technology, the functions of human-made equipment are becoming more and more complex. The traditional optical lens is bulky and the curved surface design can no longer meet the increasing integration requirements. How to effectively combine the existing mature semiconductor technology to solve the above problems becomes very important. [0003] Through micro-nano optical technology, manipulating the propag...

AI Technical Summary

Problems solved by technology

The current artificial microstructure metasurface lens technology has a huge chromatic aberration and is only suitable for working at a single wavelength

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