System for tracking angular and linear motion
US6563108B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Oct 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a system for sensing angular motion. The system includes a light source, a transducing member, and a modulating member having a track of translucent and opaque regions positioned between the light source and the transducing member. The transducing member includes optical receivers spaced across a width larger than or equal to three translucent and three opaque regions. The optical receivers, which may be interlaced across the transducing member, generate a plurality of output signals that form at least one output channel signal. The system may further include a second track of translucent and opaque regions and a second interlaced transducing member. The second transducing member includes a second plurality of optical receivers arranged to generate a plurality of signals that may be used to generate at least one index signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.