Lighting assembly with defined angular output
US9316780B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Jul 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0058
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting assembly includes a light guide and solid-state light emitters to edge-light the light guide, the light emitters arrayed along a transverse direction. The light guide includes two or more sets of optical elements of well-defined shape. Light output from the lighting assembly by the first and second set of optical elements have a first and a second light ray angle distribution, respectively. The optical elements are configured such that when measured in a plane perpendicular to the light guide and the transverse direction: 1) the first and second light ray angle distributions are significantly narrower than an omnidirectional output distribution; and 2) the peak of the second light ray angle distribution is displaced from the peak of the first light ray angle distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.