Light source unit and projection-type display
US10075682B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Sep 29, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3158
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source unit of the disclosure includes a plurality of light source sections, a light quantity detector, and a controller. The plurality of light source sections emit rays of colors different from each other. The light quantity detector receives a plurality of color rays emitted by the plurality of light source sections as spatially common light. The controller controls a light emission timing of each of the plurality of light source sections and a gain of the light quantity detector, and measures light quantities of the respective plurality of color rays at different timings and with different gains on a basis of a detection result of the light quantity detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.