Light source apparatus and projector
US10712649B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Mar 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2073
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source apparatus according to an aspect of the invention includes an excitation light source that emits excitation light, a wavelength conversion layer on which the excitation light is incident and which converts the wavelength of the excitation light to emit fluorescence, a plurality of traveling direction changers that are formed in the wavelength conversion layer and change the traveling direction of the fluorescence, and a substrate on which the wavelength conversion layer is provided. The substrate is rotated around an axis of rotation to change the position on which the excitation light is incident on the wavelength conversion layer over time, and the interval between the plurality of traveling direction changers is smaller than the size of the region on which the excitation light is incident.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.