Position detecting apparatus
US4622502A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Jan 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position detecting apparatus provided with a lighting unit 13 for lighting an object 14 to be detected, an image-formation unit 15 for imaging the object 14, a detecting unit 16 comprising a plurality of photoelectric converters disposed on the image-formation plane to detect brightness of the image and disposed two-dimensionally, a scanning unit 17 for allowing the relative position of the image to the photoelectric converters to move one-dimensionally in the image-formation plane, a selecting unit 19 for selecting the plurality of detected signals of the detecting unit, and a decision means 18 for deciding the one- and two-dimensional positions of the center, corner and edge of the object by means of the detected signal of the detecting unit, a selected signal of the selecting unit and a scanning signal of the scanning unit, so that the images formed are moved slantwise with respect to the plurality of photoelectric converters disposed two-dimensionally and the selecting unit selects the detected signals and computing-processing them to carry out the one- and two-dimensional position detection of the center, corner and edge of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.