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Device for realizing super-lens zooming based on polarization state regulation and control, zooming method and application

A super-lens, polarization state technology, applied in the field of optics, can solve the problem of zooming that no one has raised

Active Publication Date: 2020-06-26
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, chirality is an attribute of nature. The analysis, detection, and evolution of chiral structures, materials, and objects urgently require polarization-controlled zoom metalens that are sensitive to circularly polarized light. no one raised

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  • Device for realizing super-lens zooming based on polarization state regulation and control, zooming method and application
  • Device for realizing super-lens zooming based on polarization state regulation and control, zooming method and application
  • Device for realizing super-lens zooming based on polarization state regulation and control, zooming method and application

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Embodiment 1

[0071] This embodiment is used to illustrate the structure of the polarization-regulating metalens of the present invention.

[0072] Taking advantage of the advantage of subwavelength nanostructures in controlling the wavefront with a large degree of freedom, a metalens can be designed to focus left-handed and right-handed polarized light at different positions on the optical axis, such as figure 1 shown. The polarization control metalens involved in the present invention is a transmissive element, and the left-handed light is focused at F 1 At , the dextrorotatory light is focused at F 2 place. Incident light of other polarization states is focused at F 1 in F 2 In between, the optical zoom based on the polarization-regulated metalens is realized.

[0073] The basic unit of a polarization-tuning metalens is a subwavelength superatomic unit on a substrate, such as figure 2 (a) shown. The design proposed by the present invention is applicable to various wavelength band...

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Abstract

The invention provides a device for realizing super-lens zooming based on polarization state regulation and control. The device comprises a light source, a linear polarizing film, a quarter-wave plate, a polarization regulation and control super-lens and a photosensitive camera, wherein the polarization regulation and control super lens is arranged behind the linear polaroid and the quarter-wave plate, and the quarter-wave plate is rotated to obtain incident light in different polarization states to be gathered at different positions of an image space to realize zooming. The invention also provides a zooming method and application of the device. The device is simple in structure, small in size, compatible with a semiconductor process and easy to integrate and produce on a large scale. Theinvention provides a new means and method for biomedical detection, material analysis, chiral evolution research and the like which are sensitive to circularly polarized light.

Description

technical field [0001] The invention belongs to the field of optics, and in particular relates to a device, a zooming method and an application for realizing hyperlens zooming based on polarization state regulation. Background technique [0002] Optical zoom is an important indicator for evaluating the performance of various digital devices such as mobile phones, cameras, and projectors. Usually optical zoom uses the zoom ratio (magnification) to reflect the zoom capability, that is, the ratio of the long focus position to the short focus position. The focal length of a single lens is difficult to change regularly, so it is necessary to adjust the position of the entire lens group to coordinate the focal length of the entire system. And if you want to get a larger zoom factor, you need a larger internal space to install the lens and increase the movement space. At present, the zoom system is divided into four types: optical compensation type, mechanical compensation type, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B13/32G02B27/28
CPCG03B13/32G02B27/286
Inventor 王文涛董凤良褚卫国
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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