Phosphor wheel, illumination apparatus and projection type image display apparatus
US9915418B2 · kind B2 · utility
3Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2016 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Dec 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/008
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A disk-shaped substrate made of a heat conductive material is provided with, along an outer periphery of one surface of the substrate, a ring-shaped phosphor that emits light by irradiation with blue laser light that is excitation light. The substrate is provided with, on another surface of the substrate, a plurality of convex portions dotting a region corresponding to a region provided with the phosphor. In a phosphor wheel, the substrate is driven by a motor to rotate about an axis of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.