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Miniature large-view-field local amplification optical system based on metasurface

An optical system and local amplification technology, applied in the direction of optics, optical components, instruments, etc., can solve the problems of miniaturization and achieve the effect of simple structure, precise phase modulation, and changing magnification

Active Publication Date: 2022-08-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This system solves the contradiction between the large field of view and high-resolution imaging of the existing optical system, but the system is limited by the size of traditional optical components and cannot be miniaturized

Method used

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  • Miniature large-view-field local amplification optical system based on metasurface
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  • Miniature large-view-field local amplification optical system based on metasurface

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Embodiment 1

[0026] like figure 1 As shown, the present embodiment discloses a miniature large field of view partial magnification optical system based on metasurface, including a miniature large field of view front objective optical system 10, a miniature partial magnification optical system 20 based on metasurface optical elements, a miniature The relay imaging optical system 30 and the photodetector 40, the incident light rays from different fields of view pass through the miniature large field of view front objective optical system 10, and are imaged on the primary image surface of the miniature large field of view partial magnification optical system based on metasurface. The micro partial magnification system 20 of the bright surface optical element modulates the light in different fields of view on the primary image surface, and generates two images of different magnifications. The images of different magnifications pass through the micro relay imaging optical system 30 and are focus...

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Abstract

The invention discloses a miniature large-view-field local amplification optical system based on a metasurface, and belongs to the technical field of miniature optical imaging. The system comprises a miniature large-view-field front objective lens optical system, a miniature local amplification optical system based on a metasurface optical element, a miniature relay imaging optical system and a photoelectric detector. Incident light is converged to the micro local amplification optical system based on the metasurface optical element through the micro large-view-field front objective optical system, and the light respectively and simultaneously passes through the metasurface-based local amplification area and the non-amplification area to generate two images with different amplification factors. The method comprises the following steps of: modulating and magnifying a target area to obtain a modulated and magnified image and an unmodulated image outside the target area, and focusing the two images with different magnifications on a photoelectric detector through a miniature relay imaging optical system to realize imaging of a target with different magnifications in a large view field range. The system has the advantages of good imaging effect, miniaturization and integrated imaging.

Description

technical field [0001] The invention belongs to the technical field of miniature optical imaging, and relates to an optical system for realizing partial magnification of a miniature large field of view, in particular to an optical system for realizing partial magnification through a metasurface. Background technique [0002] At present, the traditional video surveillance imaging optical system has the problem that large field of view, high-resolution imaging and equipment miniaturization cannot be achieved at the same time. In recent years, optical metasurfaces have overcome some of the limitations faced by traditional optical components. Optical metasurfaces can independently control properties such as phase and amplitude at subwavelength scale and compact form, thereby realizing the function of adjusting optical power. Based on the metasurface, the present invention proposes a miniature large field-of-view partial magnification optical system. By changing the geometric si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B27/09G02B1/00G01J3/28
CPCG02B27/00G02B27/09G01J3/2823G02B1/002
Inventor 常军杜杉钟乐曹佳静马丽凤穆全全
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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