Linear lighting apparatus with increased light-transmission efficiency
US7159997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Feb 21, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides for a linear lighting apparatus. The apparatus includes a plurality of light emitting diodes, a primary optical assembly, and a secondary optical assembly. The light emitting diodes produce light towards the primary optical assembly. The primary optical assembly refracts this light towards the secondary optical assembly. The secondary optical assembly receives this light and refracts the light again so that the light emanates from the linear lighting apparatus. The present invention also provides a method for improving lighting efficiency from a linear lighting apparatus. The method includes emitting light from a plurality of light emitting diodes, refracting the light in a primary optical assembly, receiving this light refracted by the primary optical assembly, and refracting this light in a secondary optical assembly so as to direct the light from the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.