Holographic display apparatus for providing expanded viewing window
US10754074B2 · kind B2 · utility
1Cited by
8References
20Claims
0Family size
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Key dates
| Filing date | Jul 13, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Feb 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/55
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic display apparatus for providing an expanded viewing window includes a spatial filter configured to separate a plurality of holographic images generated by the hologram pattern displayed on the spatial light modulator from a plurality of lattice spots generated by a physical structure of the spatial light modulator. The spatial filter includes a plurality of color filters or a plurality of dichroic mirrors separating a first color image, a second color image, and a third color image from a first color lattice spot, a second color lattice spot, and a third color lattice spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.