Light emitting device
US9799810B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2017 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Mar 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
Abstract
A light emitting device includes a side-emitting assembly, a reflecting cup arranged on a side of the side-emitting assembly, and a package for accommodating the side-emitting assembly and the reflecting cup. The side-emitting assembly with a side surface includes a light emitting chip, a wavelength conversion layer coated on the light emitting chip, and a reflecting layer arranged above the wavelength conversion layer. The reflecting cup has an inner surface facing the side surface of the side-emitting assembly. The inner surface of the reflecting cup is a multifocal paraboloid. The multifocal paraboloid includes multistage paraboloids. The corresponding focal points of the multistage paraboloids are symmetrically distributed on the side surface of the side-emitting assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.