Electro-optical scanner module having dual electro-magnetic coils
US5665954A · kind A · utility
33Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Jan 22, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scanner module for directing a light beam to scan an optically encoded symbol includes a scanner component and a permanent magnet mounted for joint oscillatory motion on a support to scan the light beam by a flexible, resilient member having one end connected to the support, and an opposite end connected to a frame. This oscillatory motion is induced by the interacting magnetic fields established by the permanent magnet and an electromagnetic coil driven by an AC current. Bidirectional light beam scanning is achieved by an additional electromagnetic coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.