Illumination system, liquid crystal device, and electronic device
US8488080B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Dec 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination system includes: a light source that emits light; and a light guide that introduces the light through a light-incident end face facing the light source and that lets out the light from a light-exiting surface adjacent to the light-incident end face. The light source is disposed adjacent to the light-incident end face and in the position shifted from the center of the width of the light guide intersecting the direction in which the light source emits light. The light-incident end face of the light guide has at least one projection or recess in the direction intersecting the light-exiting direction of the light source. The projection or recess has an asymmetrical shape inclined in the direction intersecting the light-exiting direction of the light source. The projection or recess is inclined in one of directions intersecting the light-exiting direction of the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.