Illumination device
US9927101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2016 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Jul 12, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/405
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device includes a light source configured to emit laser light; and a wavelength conversion part configured to convert a wavelength of the laser light emitted from the light source and to irradiate illumination light. The wavelength conversion part includes a conversion region provided with a phosphor which converts the wavelength of the laser light and emits the wavelength-converted laser light, and a non-conversion region not provided with the phosphor and configured to transmit the laser light irradiated from the light source. The non-conversion region is formed in a pinhole shape with respect to the conversion region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.