Double-layer metasurface coma aberration elimination imaging lens suitable for unmanned aerial vehicle mobile shooting

An imaging lens and metasurface technology, applied in the field of micro-nano optics, can solve the problems of limiting the development of wide-angle lenses, difficult size and cost, etc., to achieve good focus, improve coma, and reduce costs

Inactive Publication Date: 2020-12-15
NANJING UNIV OF SCI & TECH
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Problems solved by technology

In fact, in the case of using a flat lens and the volume is limited, the wide-angle lens will inevitably receive a large amount of angled incident light for imaging, and then chromatic coma will affect the imaging quality, thus limiting the development of the wide-angle lens; It has greater technical requirements, and it is more difficult to compromise on size and cost

Method used

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  • Double-layer metasurface coma aberration elimination imaging lens suitable for unmanned aerial vehicle mobile shooting
  • Double-layer metasurface coma aberration elimination imaging lens suitable for unmanned aerial vehicle mobile shooting
  • Double-layer metasurface coma aberration elimination imaging lens suitable for unmanned aerial vehicle mobile shooting

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0019] It should be noted that if there are directional indications such as up, down, left, right, front, back, etc. in the embodiment of the present invention, the directional indications are only used to explain the position of each individual in a certain posture as shown in the attached figure. If the relative positional relationship, movement conditions, etc. between the components change, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions...

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Abstract

The invention discloses a double-layer metasurface coma aberration elimination imaging lens suitable for unmanned aerial vehicle mobile shooting. The lens comprises a doublet lens, and the doublet lens comprises first glass serving as a lens substrate, and a first micro-nano amorphous silicon cylindrical structure layer and a second micro-nano amorphous silicon cylindrical structure layer which are arranged on the upper surface and the lower surface of the glass respectively and are used for converging light. According to the invention, the doublet lens with the micro-nano amorphous silicon cylindrical arrays on both sides is used, so that the coma aberration condition of the curved lens is improved. The lens with the micro-nano structure is used for improving the imaging efficiency, the size and weight of the lens are reduced as much as possible, and the burden of the system on the unmanned aerial vehicle is fully reduced.

Description

technical field [0001] The invention relates to the field of micro-nano optics, in particular to a double-layer metasurface anti-coma imaging lens suitable for mobile shooting of drones. Background technique [0002] In the field of drone aerial photography, lens portability and imaging quality have always been unavoidable issues. The advantage of UAVs lies in its concealment and free viewing angle in the air, but it is difficult to balance cost, imaging quality and volume when using traditional lenses. In terms of military, UAVs need to have sufficient concealment, so that there is a requirement for the size of the UAV, and further, it is necessary to limit the volume and weight of the imaging system it carries; in terms of civilian aerial photography, it is also necessary to balance the overall price and image quality. [0003] Traditional optical components are manufactured by cutting and grinding lenses, and then assembled together to form a lens group. However, with ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B1/11G02B7/02
CPCG02B3/0062G02B1/11G02B7/021
Inventor 沈哲黄鼎鑫梁学靖黎小聪
Owner NANJING UNIV OF SCI & TECH
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