Illumination device
US6971758B2 · kind B2 · utility
53Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Nov 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/812
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the illumination device of the invention, an LED is oppose to a side surface of a flat light guide member. A light shield surface for shielding light from the LED and emitted toward the backside of the guide member in vicinity of the LED on the backside of the light guide member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.