Lighting source using solid state emitter and phosphor materials
US9447945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2015 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Jan 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting apparatus includes a substrate, a light source configured to emit light and arranged on the substrate, a phosphor layer being apart from the light source and configured to convert the light into forward transmitted light and backward transmitted light, and an optic device, being narrower than the substrate and having a transparent side wall, configured to direct at least a portion of the backward transmitted light through the transparent side wall and toward the substrate. In another aspect, a light-emitting apparatus includes a transparent base, a light source on the transparent base, a transparent material covering the light source, a phosphor layer on the transparent material, and a transparent wall on the phosphor layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.