Optical display system and method with virtual image contrast control
US8670000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Jan 26, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method includes generating a light pattern using a display panel and forming a virtual image from the light pattern utilizing one or more optical components. The virtual image is viewable from a viewing location. The method also includes receiving external light from a real-world environment incident on an optical sensor. The real-world environment is viewable from the viewing location. Further, the method includes obtaining an image of the real-world environment from the received external light, identifying a background feature in the image of the real-world environment over which the virtual image is overlaid, and extracting one or more visual characteristics of the background feature. Additionally, the method includes comparing the one or more visual characteristics to an upper threshold value and a lower threshold value and controlling the generation of the light pattern based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.