Light source apparatus and projector
US11762267B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Jan 21, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source apparatus according to an aspect of the present disclosure includes an excitation light source that outputs excitation light, a ceramic phosphor that has a first surface and a second surface, converts in terms of wavelength part of the excitation light outputted from the excitation light source and incident via the first surface to generate fluorescence, and causes the fluorescence to exit via the second surface, and a substrate that supports the first surface of the ceramic phosphor. The excitation light outputted from the excitation light source is incident on an exposed portion of the first surface of the ceramic phosphor that is the portion exposed via the substrate. The distance in the exposed portion from an irradiated region irradiated with the excitation light to the substrate is 0.34 mm or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.