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US 8,045,267 B2Granted
Optical element that enables recording and reproduction of a stereoscopic image as a hologram
AssigneeDai Nippon Printing Co., Ltd.
InventorMitsuru Kitamura
Life of this patent
Estimating the term…
Abstract
An optical element having a set of a plurality of three dimensional cells. Each cell with a specific amplitude and a specific phase are defined and which has optical characteristics such that when a predetermined incident light is provided to the individual cell, an emitted light, resulting from changing the amplitude and the phase of the incident light in accordance with the specific amplitude and the specific phase defined for the cell is obtained.
Claims15
An optical element, comprising a set of a plurality of three-dimensional cells, wherein
- with each individual cell, a specific amplitude and a specific phase are defined, said individual cell including a diffraction grating, having a periodic structure in a particular direction with a spatial positional phase that is in accordance with the specific phase in said direction, said spatial positional phase being made by shifting said periodic structure in said direction and said diffraction grating being formed in an effective region with an area that is in accordance with the specific amplitude, so that when an incident light is provided to said individual cell, an emitted light, with which an amplitude and a phase of the incident light is modulated according to the specific amplitude and the specific phase defined in said individual cell, is obtained.
Dependencies are inferred from the claim text.