Ultrathin optical lens construction method based on artificial microstructure super surface

An artificial microstructure and optical lens technology, which is applied in optics, lenses, optical components, etc., can solve the problems of large volume of optical lenses and the inability of curved surface design to meet the integration requirements, and achieve easy integration, low loss, and high transmittance Effect
CN105487145AActive Publication Date: 2016-04-13ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2016-04-13

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Abstract

The invention discloses an ultrathin optical lens construction method based on an artificial microstructure super surface. The ultrathin optical lens construction method comprises the following steps that step (1) required working wavelengths are selected within the range from visible light to intermediate infrared wavelength bandwidth of 600nm-20 microns; incident light irradiates to the artificial microstructure super surface, and phase distribution on the artificial microstructure super surface is calculated according to the required positions of emergent focus points; step (2) rotationally symmetrical periodic structures are designed according to a certain period, and concrete phase values are determined through combination of the obtained phase gradient distribution and the periodic structure units on the surface; and step (3) columnar structures of determined height are selected to act as basic units of the artificial microstructure super surface, and corresponding concrete realization structures are designed according to the phase requirement of each basic unit. The effect of an optical lens at the macro level is realized by the micro-nano structures, the optical size is extremely low under the condition of maintaining high transmittance, and the optical lens is a double-plane lens.
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Description

technical field

[0001] The invention belongs to the field of micro-nano optics and optical chip integration, and in particular relates to a method for constructing an ultra-thin optical lens based on an artificial microstructure metasurface. Background technique

[0002] Optical lenses are commonly used optical components in people's daily life, including mobile phones, cameras, video recorders, 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, and more and more of them need the cooperation of light, mechanics and electricity. Traditional optical lenses are bulky and curved surface design can no longer meet the increasing integration requirements. How to effectively combine the existing mature semiconductor technology to solve the above pr...

Claims

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