Meta-Lens in the Sky

被引：15

作者：

Chen, Mu Ku ^{[1
,2
,3
]}

Chu, Cheng Hung ^{[4
]}

Liu, Xiaoyuan ^{[1
]}

Zhang, Jingcheng ^{[1
]}

Sun, Linshan ^{[1
]}

Yao, Jin ^{[1
]}

Fan, Yubin ^{[1
]}

Liang, Yao ^{[1
]}

Yamaguchi, Takeshi ^{[4
]}

Tanaka, Takuo ^{[4
,5
,6
]}

Tsai, Din Ping ^{[1
,2
,3
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Ctr Biosyst Neurosci & Nanoteehnol, Hong Kong, Japan

[3] City Univ Hong Kong, State Key Lab Terahertz & Millimeter Waves, Hong Kong, Japan

[4] RIKEN, Innovat Photon Manipulat Res Team, Ctr Adv Photon, Wako, Saitama 3510198, Japan

[5] RIKEN, Metamat Lab, Cluster Pioneering Res, Wako, Saitama 3510198, Japan

[6] Tokushima Univ, Inst PostLED Photon, Tokushima 7708506, Japan

来源：

IEEE ACCESS | 2022年 / 10卷

关键词：

Metasurfaces; meta-devices; meta-lenses; imaging and sensing; unmanned aerial vehicles; DIELECTRIC METASURFACE; EFFICIENCY;

D O I：

10.1109/ACCESS.2022.3171351

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Meta-lenses are advanced optical devices composed of artificial nano-antenna arrays. Its flat, light-weight, ultra-thin, compact, customizable, and easy-to-integrate advantages enable widely potential usages in new demands. We demonstrate a GaN-based polarization-independent meta-lens-based camera on a drone. The diameter of the meta-lens is 2.6 mm, and the measured focal length is 5.03 mm under the 532 nm light incident. An array of the 750 nm height cylindrical nano-antennas with various sizes of the meta-lens provides the 2 pi phase modulation of the focusing phase distribution. The meta-lens is integrated with an image sensor and mounted on the drone to realize the aerial photography and landing assistance. By taking images of the specific pattern on the ground at different heights through the meta-lens, the flying height of the drone can be detected for landing and flying. We trust meta-lens-camera can reduce the weight burden for prolonging flight time. We believe the meta-lens-based optical devices for imaging and sensing is an important key for micro/nano-robots, micro air vehicles, and intelligent sensing devices in the future.

引用

页码：46552 / 46557

页数：6

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