Projector and method for acquiring coordinate of bright spot
US8079714B2 · kind B2 · utility
1Cited by
7References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 17, 2007 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector for acquiring a coordinate of a bright spot includes a half transparent and half reflecting mirror (22), an imaging device (24), and a processing system (25). The half transparent and half reflecting mirror (22) is provided on a light path between the light source (21) and the zooming system (23). The imaging device (24) captures an external light ray reflected by the half transparent and half reflecting mirror (22). The processing system (25) acquires the coordinate of the bright spot according to the image of the image of the bright spot captured by the imaging device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.