System and method for 3D holographic display using spatial-division multiplexed diffractive optical elements for viewing zone improvement
US10747176B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/23
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the present invention, by providing a 3D holographic display system comprising a modulation apparatus configured to modulate light emitted from a light source into a light wave corresponding to a 3D image, an optical apparatus configured to propagate the light wave into the first plane, and a diffraction apparatus configured to multiplex the propagated light wave to extend viewing angle of the 3D holographic display, a limited viewing zone of the holographic display determined by the SLM pixel pitch, may be extended by optical methods, such as using diffractive optical elements (DOE) for spatial-division multiplexing (SDM).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.