Optical angle and torque sensor
US7089672B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34715
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention consists of an optical sensor for determining the angle and the torque of a rotatable object (13). The sensor contains at least one patterned surface (1) an ASIC (3), at least one lens (2) and at least one EMR source (16, 17). The ASIC (3) comprises processing means and an array of detectors for EMR. The at least one EMR source (16, 17) illuminates the patterned surface (1) and the at least one lens (2) focuses a part of the reflected EMR (5) from the patterned surface (1) onto the array of detectors for EMR. The patterned surface (1) contains a pattern including turning marks and laser marks (8). The at least one lens (2) focuses substantially EMR reflected by the turning marks (14) onto the array of detectors. The turning marks (14) are non-symmetrical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.