The invention discloses a
monocular four-dimensional imaging device and method based on a metasurface. The
monocular four-dimensional imaging device comprises an
image sensor and an imaging optical
system arranged in front of the
image sensor. Wherein the imaging optical
system comprises a metasurface, the metasurface is designed to simultaneously generate a self-acceleration Airy
point spread function with depth-dependent
lateral displacement for incident left-hand circularly polarized light and right-hand circularly polarized light, and the self-acceleration Airy
point spread function can generate a self-acceleration Airy
point spread function with depth-dependent
lateral displacement under the condition that a mechanical moving part is not used. Carrying out polarization separation and focusing on the left-hand circularly polarized light and the right-hand circularly polarized light; the
image sensor is used for recording a mixed image containing the left-hand circularly polarized light information and the right-hand circularly polarized light information at the same time through
single exposure so as to obtain three-dimensional depth and polarization information of the metasurface, namely
monocular four-dimensional imaging of the metasurface. The scene
perception and understanding capability of a
machine is greatly enhanced, and the method has unique advantages in the aspects of target identification, material discrimination, severe environment
perception and the like.