White LED lighting device, and optical lens
US8981402B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 4, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Aug 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are a white LED lighting device and an optical lens used in it. The white LED lighting device comprises a white LED and an optical lens. The white LED includes: a LED chip which emits blue light; and a fluorescent material which is excited by emission light of the LED chip and converts a wavelength into fluorescence of a complementary color of blue. The optical lens is formed with a scattering light guide which is given uniform scattering power in terms of a volume. The scattering light guide includes scattering particles for the scattering efficiency in a short wavelength range of light to be higher than that in a long wavelength range of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.