Patent ID: 8531747
Filing Date: 2013-09-10
Classification: G02B,G03F,G03H

Abstract:
1. A hologram which forms a light intensity distribution and a light polarization 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, wherein the plurality of cells are designed to form a portion, where both the first polarized light component and the second polarized light component enter, in an overlap region in which a first light intensity distribution region formed on the predetermined plane by the first polarized light component and a second light intensity distribution region formed on the predetermined plane by the second polarized light component are overlapped on each other, and wherein a polarized light in the portion has a different polarization state from the incident light of the individual first and second polarized light components, a phase difference between the phase of the first polarized light component and the phase of the second polarized light component is a constant value in the portion, and the phase of the first polarized light component is diffused in the portion.