LED signaling device for road traffic signals
US7390107B2 · kind B2 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2006 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Jul 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0955
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention describes an optical signal transmitter device, in which a specific, predetermined emission characteristic or light density distribution is achieved solely by the arrangement of two or more light elements on a base plate. This means that there is no longer any need for complicated optical structures in order to produce the predetermined light distribution. The invention furthermore describes an optical signal transmitter device that uses a convex condenser in order to improve the light gathering characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.