Spatial image display apparatus
US10001653B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2015 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Mar 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0457
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spatial image display apparatus includes a display element including a plurality of pixels which are two-dimensionally arranged, and an imaging device that has a substrate including a plurality of dihedral corner reflectors arranged, the display element is disposed in a first space on one main surface of the substrate, and the imaging device forms a real image of a display image by the display element, in a second space on the other main surface of the substrate. The plurality of pixels are arranged in a period corresponding to a frequency that is equal to or less than a minimum spatial frequency at which an MTF value relative to a spatial frequency of the imaging device is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.