Spread illuminating apparatus with light conductive plate having polygonal configuration
US7056004B2 · kind B2 · utility
1Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Sep 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a spread illuminating apparatus comprising a spot-like light source, and a light conductive plate, the light conductive plate is shaped into a pentagon which has two sides thereof substantially parallel to each other. The pentagon includes, as a part thereof, a triangle having its base defined by an imaginary line connecting respective straightly opposing ends of the two parallel sides, and the spot-like light source is disposed at a side of the pentagon constituting one of two hypotenuses of the triangle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.