Cavity reflector light injection for flat panel displays
US8162524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2011 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jul 20, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light mixing system includes a transparent waveguide having a reflectorized edge, a light input edge and a light output edge opposite the reflectorized edge. The light input edge receives light of different colors from two or more light sources. The received light of different colors is totally internally reflected from opposite major surfaces of the waveguide. Formed inside the waveguide are a plurality of cavities bounded by walls substantially parallel to the edges and substantially orthogonal to the major surfaces of the waveguide. Interaction of the received light of different colors with one or more of the cavities and the reflectorized edge mixes the light of different colors before exiting the light output edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.