Changeable means for different total tracks and its method
US7889398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Jul 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/02433
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a changeable apparatus for different total tracks and a corresponding method. The apparatus reflects a light from a light source at least twice toward predetermined directions. The apparatus comprises plural reflection elements, at least one of the plural reflection elements is a rotational reflection element, which has plural reflection surface sets, and each reflection surface set has at least one reflection surface. The rotational reflective element further comprises a pivot axis is for each rotational reflection element for circulating and changing of reflection surface sets and a fixing apparatus, which connects to a rotational reflection element for adjusting and fixing positions of the rotational reflection element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.