Electro-optical angular displacement
US4430566A · kind A · utility
20Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1981 |
| Grant date | Feb 7, 1984 |
| Priority date | — |
| Expiry date | Apr 21, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electro-optical angular displacement transducer incorporates a pair of encoding disks to produce a varying moire interference pattern sensitive to angular displacement of one disk relative to the other. The disks are illuminated by a fiber optic bundle over substantially a full 360 degree annulus concentric with the disks. A similar fiber optic bundle is used to collect the light transmitted through the disks and supply it to a detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.