2021/06/15 by Zihan Zang, Zang, Zihan, Haoqiang Wang +9
Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Optics (physics.optics) #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.2106.07872
arxiv created 2021/06/15 · arxiv updated 2021/06/16
The design of compact optical systems with large field of view has been difficult due to the requirement of many elements or a curved focal plane to reduce off-axis aberration. We propose a multi-aperture lens design to effectively resolve these issues. Metagrating-based deflectors are placed near entrance pupils of multi-aperture lens array to enhance field of view. A systematic design method is given in details. In design examples, a ±80^∘ field of view using only two planar optical elements is achieved. Also, the system is extremely compact with total track lengths an order of magnitude smaller than conventional fish-eye lenses, while the imaging performance is comparable with conventional designs.