Multimode waveguide holograms capable of using non-coherent light
US5295208A · kind A · utility
159Cited by
9References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 26, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Feb 26, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/2226
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multimode waveguide having a small thickness has light coupled to the side of the waveguide in order to provide a multimode operation of the waveguide for providing a continuous pattern of totally internally reflected light which is utilized to reconstruct holographic images from a holographic emulsion placed on a surface of the waveguide. This waveguide structure for reconstructuring a hologram has the capability of providing highly efficient hologram reconstruction while using ordinary light sources and is able to use beam diameters greater than the thickness of the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.