Flat panel lens
US7660047B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2008 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Sep 3, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat panel lens system as a tapered light guide that has minimal or no margin for fan out. The tapered light guide includes a thin end, and a thick end of which is a bevelled mirror or an optical equivalent. Light is injected into the thin end and the mirror is such that rays injected through a point at the thin end emerge collimated from one of the light guide surfaces, and that collimated rays injected at an appropriate angle through one of the light guide surfaces emerge from a point at the thin end. Bragg gratings can be utilized for color implementations as well. The tapered light guide can be fabricated as a single piece, by extrusion, injection molding, or the combination/variation of extrusion and injection molding, as well as other commonly known techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.