Image projecting apparatus and image projecting method
US7967445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2007 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/745
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.