Patent ID: 9116303
Filing Date: 2015-08-25
Classification: G02B,G03B,G03F

Abstract:
1. A hologram which forms a light intensity distribution on a predetermined plane by using incident light, the hologram comprising: a plurality of cells configured to control both a phase of a first polarized light component in a first polarization direction of the incident light and a phase of a second polarized light component in a second polarization direction perpendicular to the first polarization direction, to form a phase difference distribution between phase distributions for the first and second polarized light components, wherein the plurality of cells comprises an isotropic medium and an anisotropic medium, wherein the phase distribution of the first polarized light component and the phase distribution of the second polarized light component are designed so that a number of phase difference levels of the phase difference distribution is less than a number of phase levels of the phase distribution of the first polarized light component, and wherein the plurality of cells is formed in the hologram based on the phase distribution of the first polarized light component and the phase distribution of the second polarized light component which are designed so that the number of phase difference levels of the phase difference distribution is less than the number of phase levels of the phase distribution of the first polarized light component.