Light and small camera based on metasurface

A super-surface, light and small technology, used in optical components, instruments, optics, etc., can solve the problems of inability to achieve super-focusing, high rework rate, complicated operation, etc., and achieve the effect of convenient operation, simple process flow and obvious process value.

Pending Publication Date: 2022-04-08
南通智能感知研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In the prior art, the metasurface unit structure and the substrate are made of two different materials, and this technology forms the metasurface unit structure through ellipses of different sizes, and uses the metasurface structure to generate different phase distributions for light of different wavelengths , so that different wavelengths can be focused on different positions on the surface of the photodetector array to achieve spectroscopic and imaging functions. This technology is complex to operate in actual production, has a high rework rate, and cannot achieve hyperfocus

Method used

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  • Light and small camera based on metasurface
  • Light and small camera based on metasurface
  • Light and small camera based on metasurface

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Effect test

Embodiment 1

[0050] The light and compact camera based on the metasurface of the present embodiment includes a metasurface structure, a focal plane and a detector;

[0051] The metasurface structure is used to process the optical information of the measured object;

[0052] The focal plane is used to receive imaging information after passing through the metasurface structure;

[0053] The detector is used to receive image information after passing through the metasurface structure;

[0054] When working, when the optical information of the measured object is imaged on the focal plane through the metasurface structure of the camera, the photosensitive pixel of the detector is used to receive the imaging information, and after a series of processing at the back end of the detector, the optical signal→electrical signal→ Digital signal→image format conversion.

[0055] The above-mentioned metasurface structure such as image 3 The shown is composed of substrate and metasurface unit structur...

Embodiment 2

[0071] The light and compact camera based on the metasurface of the present embodiment includes a metasurface structure, a focal plane and a detector;

[0072] The metasurface structure is used to process the optical information of the measured object;

[0073] The focal plane is used to receive imaging information after passing through the metasurface structure;

[0074] The detector is used to receive image information after passing through the metasurface structure;

[0075] When working, when the optical information of the measured object is imaged on the focal plane through the metasurface structure of the camera, the photosensitive pixel of the detector is used to receive the imaging information, and after a series of processing at the back end of the detector, the optical signal→electrical signal→ Digital signal→image format conversion.

[0076] The above-mentioned metasurface structure such as image 3 The shown is composed of substrate and metasurface unit structur...

Embodiment 3

[0092] The light and compact camera based on the metasurface of the present embodiment includes a metasurface structure, a focal plane and a detector;

[0093] The metasurface structure is used to process the optical information of the measured object;

[0094] The focal plane is used to receive imaging information after passing through the metasurface structure;

[0095] The detector is used to receive image information after passing through the metasurface structure;

[0096] When working, when the optical information of the measured object is imaged on the focal plane through the metasurface structure of the camera, the photosensitive pixel of the detector is used to receive the imaging information, and after a series of processing at the back end of the detector, the optical signal→electrical signal→ Digital signal→image format conversion.

[0097] The above-mentioned metasurface structure such as image 3 The shown is composed of substrate and metasurface unit structur...

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Abstract

The invention belongs to the technical field of cameras, and particularly relates to a metasurface-based light and small camera, which comprises a metasurface structure, a focal plane and a detector, during working, when optical information of a detected object is imaged on a focal plane of the camera through a metasurface structure of the camera, a photosensitive pixel of the detector is used for receiving imaging information, and conversion from an optical signal to an electric signal to a digital signal to an image format is realized through a series of processing at the rear end of the detector. Wherein the metasurface structure is composed of a substrate and a metasurface unit structure, and on the basis of a two-dimensional focusing formula, beam splitting, deflection and energy regulation and control of light beams can be achieved only by rotating the aperture angle. According to the invention, the metasurface structure is adopted to replace an initial telescope system, and optical imaging at different distances can be realized at a focal plane through setting of different focal lengths.

Description

technical field [0001] The invention belongs to the technical field of cameras, and in particular relates to a light and small camera based on a metasurface. . Background technique [0002] The metasurface is to periodically arrange the unit cell structure on a two-dimensional plane. Compared with metamaterials, the difficulty in the process is greatly reduced. In addition, metamaterials bring the accumulation of phases in the material space, while the regulation of electromagnetic waves by metasurfaces is a phase mutation that occurs on both sides of the structural unit, so as to realize the control of the amplitude and phase of electromagnetic waves. , Polarization and other characteristics of regulation. Compared with three-dimensional metamaterials, two-dimensional metasurfaces have the following characteristics: (1) metasurfaces are subwavelength structures, which are smaller in volume and lower in loss compared with metamaterials, which is conducive to the integratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/00G02B27/00
Inventor 李振刘银年孙德新姚明亮许本有毛维涛姚冰双
Owner 南通智能感知研究院
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