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Polarization-independent infrared lens based on full-low refractive index medium metasurface structure

A low-refractive index, meta-surface technology, applied in the field of micro-nano photonics, to achieve the effects of expanded application, high focusing efficiency, and easy integration

Inactive Publication Date: 2021-03-26
无锡光隐科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although there have been many studies on infrared metalens, there is no research report on infrared metalens with all low refractive index and low loss dielectric

Method used

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  • Polarization-independent infrared lens based on full-low refractive index medium metasurface structure
  • Polarization-independent infrared lens based on full-low refractive index medium metasurface structure
  • Polarization-independent infrared lens based on full-low refractive index medium metasurface structure

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Embodiment Construction

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0043] It should be noted that the terms "comprising" and "having" in the specification and claims of the present application and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, including a series of steps or units A process, method, system, product or device is not necessaril...

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Abstract

The invention discloses a polarization-independent infrared lens based on a full-low refractive index medium metasurface structure. The polarization-independent infrared lens is obtained by arrangingn structural units according to a specific phase, wherein n is greater than 1; and each structural unit comprises a substrate and a micro-column arranged on the substrate. The infrared super lens canfocus infrared waves in any polarization state and polarization direction to the same position. According to the infrared super lens disclosed by the invention, the focusing effect of an optical lenson a macroscopic scale is realized through phase mutation provided by the structural units, and the focusing capability close to a diffraction limit is achieved. In addition, the infrared super lens has extremely small thickness and efficient focusing capability, and is expected to be well applied to a complex infrared imaging system.

Description

technical field [0001] The invention belongs to the field of micro-nano photonics, and in particular relates to a polarization-independent infrared lens based on an all-low refractive index medium metasurface structure. Background technique [0002] Lens is a very important imaging element, which is widely used in daily life and military industry, such as mobile phones and cameras. Traditional lenses use the accumulation of optical paths to achieve a specific phase distribution. Their large volume is not conducive to system integration; and their focusing and imaging effects are related to curved surfaces. It is difficult to ensure that the curvature meets the requirements accurately, and the processing is difficult. [0003] In the large family of lenses, infrared lenses play an important role in civilian and military fields such as infrared thermal imaging, infrared detection, environmental pollution detection, and infrared guidance, and have important research significanc...

Claims

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Application Information

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IPC IPC(8): G02B3/00G02B1/00
CPCG02B3/00G02B1/002
Inventor 徐挺
Owner 无锡光隐科技发展有限公司
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