Optical attachment for a light-emitting diode and brake light for a motor vehicle
US6536923B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/315
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical attachment 10 for a light source, in particular for a light-emitting diode 12, exhibits an inner lens area 14 which surrounds an optical axis 13 of the optical attachment 10 for inner light beams 15 emitted from the light source and an outer reflector area 16 for outer light beams 17 of the light source which surrounds the inner lens area 14 in a ring-like manner. Due to this combination of refraction in the inner lens area and reflection in the outer reflector area, the dimensions of the optical attachment can be kept relatively small and, in comparison to a lens or a reflector, more light can be collected and the point-shaped light diode can be imaged on the exiting side as a large area light appearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.