Holographic display apparatus for providing expanded viewing window
US10809664B2 · kind B2 · utility
7Cited by
10References
27Claims
0Family size
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Key dates
| Filing date | Aug 14, 2017 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Dec 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/351
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic display apparatus for providing an expanded viewing window is provided. The holographic display apparatus includes a spatial filter configured to allow a plurality of holographic images generated by 0th order or higher diffraction in a spatial light modulator to pass therethrough, and an image path conversion element configured to adjust a light path of the plurality of holographic images so that the plurality of holographic images are spaced apart from each other on a focal plane of an optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.