9:00 AM - *EQ10.27.03
Autonomous Sensing by Intelligent Meta-Lens Array
Din-Ping Tsai1,Mu Ku Chen1,Xiaoyuan Liu1,Yubin Fan1,Jin Yao1,Jincheng Zhang1,Linshan Sun1
City University of Hong Kong1
Meta-lens is a new type of optical device that has risen in recent years.1 Meta-lenses compose of artificial nanostructures can manipulate the electromagnetic phase and amplitude. Meta-devices show excellent performance and novel applications to meet the optical demands2,3. The great advantages of meta-lenses are their new properties, lighter weight, small size, high efficiency, better performance, broadband operation, lower energy consumption, data volume reduction and CMOS compatibility for mass production. The meta-devices will come into our real-life soon because novel advantages of meta-devices are their novel properties, customizable, small size, lightweight, high efficiency, better performance, broadband operation, lower energy consumption, and Semiconductor process compatibility for mass production.
We inspired and learned from nature to develop the meta-lens array for intelligent imaging and sensing. The design, fabrication, and applications of the intelligent meta-lens array are reported in this talk. A 60 × 60 broadband achromatic optical meta-lens array is designed and fabricated for working in the whole visible range. We developed the meta-lens array based light field imaging system for digital focusing, full-color imaging, depth sensing for static and dynamic objects4, and 1D to 3D edge detection5. The achromatic meta-lens array can collect high dimensional light field information of objects in the scene. The imaging, depth sensing, edge information can be extracted by the imaging computing of the light field raw image formed by the achromatic meta-lens array. The high dimensional optical information of objects can be reconstructed slice by slice from a series of rendered images with different depths of focus. This research shows the importance of optical meta-devices for next-generation optical imaging and sensing. We believe this is an important milestone of the research on intelligent meta-devices opens up an avenue for future applications of optical devices in micro-robotic vision, unmanned-vehicle sensing, virtual and augmented reality, drones, and miniature personal security systems.
(1) Chen, M. K.; Wu, Y.; Feng, L.; Fan, Q.; Lu, M.; Xu, T.; Tsai, D. P. Principles, Functions, and Applications of Optical Meta-Lens. Advanced Optical Materials 2021, 9 (4), 2001414.
(2) Wang, S. M.; Wu, P. C.; Su, V. C.; Lai, Y. C.; Chen, M. K.; Kuo, H. Y.; Chen, B. H.; Chen, Y. H.; Huang, T. T.; Wang, J. H.et al. A broadband achromatic metalens in the visible. Nature Nanotechnology 2018, 13 (3), 227.
(3) Wang, S.; Wu, P. C.; Su, V.-C.; Lai, Y.-C.; Chu, C. H.; Chen, J.-W.; Lu, S.-H.; Chen, J.; Xu, B.; Kuan, C.-H. Broadband achromatic optical metasurface devices. Nature Communications 2017, 8 (1), 1.
(4) Lin, R. J.; Su, V.-C.; Wang, S.; Chen, M. K.; Chung, T. L.; Chen, Y. H.; Kuo, H. Y.; Chen, J.-W.; Chen, J.; Huang, Y.-T. Achromatic metalens array for full-colour light-field imaging. Nature Nanotechnology 2019, 14 (3), 227.
(5) Chen, M. K.; Yan, Y.; Liu, X.; Wu, Y.; Zhang, J.; Yuan, J.; Zhang, Z.; Tsai, D. P. Edge detection with meta-lens: from one dimension to three dimensions. Nanophotonics 2021.