From Event: SPIE Optical Engineering + Applications, 2018
Metalenses have great ability in light focusing and can be tailored to exhibit varied functionalities for ultrathin optical applications. Here, we demonstrate a GaN metalens array which can be regarded as a light shaping generator for the structured light generation. The metalens array consists of 60 x 60 metalenses which can project a 42 cm x 42 cm light spots area at the distance of 1.5 M. The distance can be estimated by identifying the deformation of light spot distribution. The advantages of this metadevice is light weight, small, ultrathin, durable and easy to compact with other devices. Our design provides a new avenue for the structured light applications such as distance sensing and 3D environmental construction.
Cheng Hung Chu, Mu Ku Chen, Ren Jie Lin, Yi-Teng Huang, Hsin Yu Kuo, Bo Han Chen, Yu Han Chen, Tsung Lin Chung, Jia-Wern Chen, and Din Ping Tsai, "Metalens for distance estimation (Conference Presentation)," Proc. SPIE 10757, Optical Data Storage 2018: Industrial Optical Devices and Systems, 107570C (Presented at SPIE Optical Engineering + Applications: August 19, 2018; Published: 18 September 2018); https://doi.org/10.1117/12.2323758.5836679364001.
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