Projector in illumination optical system including phosphor wheel driver
US9509966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector in an illumination optical system includes a laser light source, a synchronization signal processor that converts synchronization signals that are synchronized with video signals input from outside the projector into video signals to be used inside the projector, an LD driver that controls a lighting state of the laser light source according to the synchronization signals output from the synchronization signal processor, an LED (Light Emitting Diode) light source, an LED driver that controls a lighting state of the LED light source according to the synchronization signals output from the synchronization signal processor, a rotational state detector that detects a rotational state of a phosphor wheel, and a phosphor wheel driver that, based on a detected result of the rotational state detector, controls the rotational state of the phosphor wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.