RGB color image coding method based on single-size nano-structure metasurface

A technology of RGB image and nanostructure, applied in the field of RGB image coding, can solve the problems of reducing information capacity, increasing the difficulty of metasurface design and processing, etc., and achieve the effect of small size, light weight and ingenious design method

Pending Publication Date: 2022-07-01
ZHEJIANG UNIV OF TECH
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In metasurface-based color image coding, a superunit composed of nano-bricks of various sizes is usually used as a pixel, and each nano-brick acts o...

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  • RGB color image coding method based on single-size nano-structure metasurface
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  • RGB color image coding method based on single-size nano-structure metasurface

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Embodiment Construction

[0042] In order to more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only embodiments of the present invention, and for those of ordinary skill in the art, other drawings and other implementation.

[0043] The present invention will be further described below with specific embodiments in conjunction with the accompanying drawings. figure 2 Among them, 1-silicon nanobrick, 2-silicon dioxide dielectric layer, L is the length of the nano-brick, W is the width of the nano-brick, H is the height of the nano-brick, C is the side length of the square working surface of the nano-brick unit, and θ is The corner of the nano-brick is the angle between the long axis of the nano-brick and the x-axis.

[0044] Embodiment This embodiment is a s...

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Abstract

The invention discloses an RGB color image coding method based on a single-size nano-structure metasurface, and the method comprises the steps: achieving the multiplexing of three information channels through a metasurface polarizer which is only composed of a plurality of nano-brick structure unit arrays through the degeneracy of a steering angle of a nano-brick structure unit and the conversion relation between decimal data and binary data; the three information channels are mutually independent and are respectively used for storing coding information of R, G and B color components. According to the invention, the conversion among three channels can be realized by changing the polarization direction of incident polarized light and the direction of the light transmission axis of the polarization analyzer. The information stored in the three channels is unrelated and can be designed at will, and the information storage requirement of the RGB color image is met. Moreover, the metasurface designed by the invention is simple in structure, can be highly integrated, and is suitable for the trend of miniaturization and integration of devices.

Description

technical field [0001] The invention belongs to the technical field of micro-nano optics and polarized optics, and in particular relates to an RGB image encoding method based on a single-size nanostructure metasurface. Background technique [0002] Any color in an RGB image can be represented by a mixture of the three primary colors R, G, and B in different proportions, so its information encoding usually requires three channels. The traditional color image storage and display technology has been unable to meet the requirements of the gradual miniaturization of optical systems due to problems such as large pixel size, while metasurfaces have sub-wavelength structural units. The amplitude, phase, etc. of the metasurface can be adjusted, showing extremely high image resolution advantages in image storage and display, and the metasurface is small in size, light in weight, simple in structure, and easy to integrate. In metasurface-based color image coding, a superunit composed ...

Claims

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Application Information

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IPC IPC(8): G06T9/00G06T7/90G06F30/20
CPCG06T9/00G06T7/90G06F30/20
Inventor 邓娟鄢波邱诚浩高凡王圣明杜蒙恩蔡萍根陈乃波吕斌李芸
Owner ZHEJIANG UNIV OF TECH
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