Scanner device
US7755773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Apr 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner device for measuring the color properties of a measured object pixel by pixel has a support surface for the measured object, a color measuring head, a drive unit for moving the color measuring head above the support surface in at least one dimension thereof and for adjusting the height of the color measuring head in the direction perpendicular to the support surface, as well as a measurement and drive control unit which activates the drive unit and co-operates with the color measuring head. It is also equipped with an electronic distance control system which adjusts the distance of the color measuring head above the measurement point in the direction perpendicular to the support surface to a desired measuring distance for every measurement point by means of the drive unit. The electronic distance control system works with measurement values generated by the color measuring head and distance values computed from them. The scanner device is suitable for running high-precision measurements on even the smallest measurement fields without contact and no separate measurement sensor is needed for the distance control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.