Lightfield camera that can simultaneously acquire 2d information and 3d spatial information from same depth

Abstract

Disclosed is a lightfield camera that can simultaneously acquire two-dimensional information and three-dimensional spatial information from the same depth. An optical system includes a polarizer configured to adjust a polarization state of object light scattered from an object to one polarization direction, a polarization switching layer disposed at a rear end of the polarizer, and configured to adjust a polarization state of the object light having passed through the polarizer, a main lens configured to receive the light having passed through the polarization switching layer and focus the light to one focal point, a polarization-dependent concave lens disposed at a rear end of the main lens, and configured to transmit or disperse light depending on a polarization direction of the light, and a polarization micro lens array disposed at a rear end of the polarization-dependent concave lens, and configured to focus or transmit light.