Holographic display apparatus for providing expanded viewing window
US11796960B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Feb 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/23
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a holographic display apparatus capable of providing an expanded viewing window when reproducing a holographic image via an off-axis technique. The holographic display apparatus includes a spatial light modulator comprising a plurality of pixels arranged two-dimensionally; and an aperture enlargement film configured to enlarge a beam diameter of a light beam coming from each of the plurality of pixels of the spatial light modulator. The beam diameter of each light beam enlarged by the aperture enlargement film may be greater than the width of an aperture of each pixel of the spatial light modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.