Lighting apparatus having an optical waveguide and a plurality of light interacting structures and method of forming the same
US10509154B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
According to embodiments of the present invention, a lighting apparatus is provided. The lighting apparatus includes at least one light source configured to provide a source light, an optical waveguide optically coupled to the at least one light source, the optical waveguide having at least one input region through which the source light enters the optical waveguide for propagation within the optical waveguide, and a plurality of light interacting structures arranged within the optical waveguide, the plurality of light interacting structures adapted to interact with the source light to provide an illumination light emitted from the optical waveguide to an ambient environment, wherein a concentration of the plurality of light interacting structures increases, along a length portion of the optical waveguide, in a direction away from the at least one input region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.