Apparatus for measuring the position of an object
US4479717A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Oct 30, 1984 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A source of light (F1, 34) directs a light beam (35) towards an object. A photoelectrical measuring system (39) includes three measurement detectors (40, 41, 42) having respective reception fields (44, 45, 46). These fields overlap partially, and all of them share a volume of space in common with the beam (35). A reference photoelectrical system (F2, 36) detects light diffused by an object anywhere in said common volume. A processing system determines the distance of the object in said common field as a function both of which of the measurement detectors is detecting light diffused by the object and of the ratio between the measurement signal detected thereby and the reference signal from the reference system. The apparatus may be used to equip the pincers of an industrial robot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.