Optical component calibration system for laser-based display device
US9052521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2010 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Dec 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3194
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser-based display device includes a plurality of ultraviolet lasers configured to excite a phosphor-containing display screen in order to produce visible light. The laser-based display device also includes a reference laser used for calibration operations. A control system within the laser-based display device causes the reference laser beam to scan across one or more calibration features, and adjusts optical components of the laser-based display device, including activation timing of the ultraviolet lasers, based on feedback patterns generated by the calibration features, to compensate for drift effects. The calibration features may be disposed off-screen or on-screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.