Optical guide bar, line light source device, surface light illumination device, and display apparatus
US7850357B2 · kind B2 · utility
28Cited by
0References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2007 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Feb 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is an optical guide bar including: a light exit portion; light incident portions, on which light is incident, formed on both sides of the light exit portion; and a reflective portion facing the light exit portion and including a prism pattern that reflects light transmitted through the light incident portions towards the light exit portion. A shape of the reflective portion is determined in consideration of an effective light emission width of the light incident portion so that the intensity of light at any portion of the reflective portion is uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.