Hologram display
US6288803A · kind A · utility
37Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A hologram display has a projector (2), a hologram screen (9), and a filter set (25) that is arranged between the projector and the hologram screen to absorb light with a peak diffraction efficiency in a specific wavelength area. The hologram display faithfully reproduces original colors and improves productivity. Also provided is a hologram screen having a hologram element (11) for diffracting and scattering a projected beam (21) from a projector (2), and a light scattering element (12) whose scattering angle is at least five degrees. The hologram screen correctly reproduces original colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.