Displacement sensor
US7151568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2001 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jun 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A displacement sensor comprising an imaging unit and an image processing unit. The imaging unit comprises a two dimensional imaging device and a drive control unit. The two dimensional imaging device includes a group of light receiving pixels arranged in a matrix so as to correspond to a field of view of a standard imaging unit, a plurality of vertical shift registers corresponding to different columns of the pixels, and a horizontal register for receiving the outputs of the vertical shift registers from top stages thereof, a photosensitive pixel region being defined in a prescribed horizontal band having a sufficiently narrower width than that would be provided by the total number of horizontal lines and interposed between a front optically black pixel region and a back optically black pixel region. The drive control unit controls, according to a commanded electric charge transfer protocol, a feeding of signal electric charges from each light receiving pixel to the vertical shift register of a corresponding column, a vertical transfer of signal electric charges in the vertical shift register of each column, and a horizontal transfer of signal electric charges in the horizontal shi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.