Device for detecting the edge location of an object
US5006719A · kind A · utility
28Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jul 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Device for detecting a position of an edge includes a row of light-emitting elements forming an angle with the edge, an optoelectric transducer disposed adjacent the light emitter elements for receiving light emitted by the light emitting elements, first means for guiding the edge between the row of light-emitting elements and the optoelectric transducer, second means for pulsatingly energizing the light-emitting elements sequentially, and third means for scanning an output voltage of the optoelectric transducer in synchronism with the pulsating energization of the light-emitting elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.