Lighting device, image pickup apparatus and portable terminal unit
US7611780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2006 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Apr 5, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48091
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lighting device including a supporting member, a light emitting element disposed on the supporting member, and emitting light from an upper and side surfaces thereof, a first fluorescent layer containing an organic phosphor and disposed on the supporting member, and a second fluorescent layer containing only an inorganic phosphor and disposed on the supporting member, wherein the second fluorescent layer is disposed to cover the upper and side surfaces of the light emitting element, and the first fluorescent layer is disposed on at least side surface of the light emitting element with the second fluorescent layer being interposed between the light emitting element and the first fluorescent layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.