Projector, image projection method, and head-up display device using the projector
US8648904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2009 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Dec 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/317
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector projecting an image on an object by scanning the object with a light beam includes a light source; a divergence angle converter converting the divergence angle of the light beam; a light deflector deflecting the light beam in a light beam scanning direction and a direction perpendicular to the light beam scanning direction; alight deflector drive controller controlling the light deflector to form the focused light spots at the respective pixel positions of the object on the basis of positional data for the pixels; a light amount controller controlling light amount of the light beam on the basis of luminance data for the pixels; and an image processor correcting the luminance data on the basis of previously obtained deterioration data of the projected image and outputting the corrected luminance data to the light amount controller while outputting the positional data to the light deflector drive controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.