Light emitting module
US8704261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2012 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Dec 21, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting module includes: an LED chip; a plate-shaped phosphor layer that is provided so as to face the light emitting surface of the LED chip and is configured to convert the wavelength of the light emitted by the LED chip; and a filter layer that is formed, of the surfaces of the phosphor layer, on at least one of the surface that faces the LED chip and the side surface, and that is configured to transmit the light emitted from the LED chip and to reflect the light whose wavelength has been converted by the phosphor layer. The filter layer is formed such that a ratio of the energy of the emitted light within a range of ±60° with respect to the front direction to the total energy of emitted light is 80% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.