Compact scan module with magnetically centered scan mirror
US6637657B2 · kind B2 · utility
21Cited by
54References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Jul 10, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10643
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A non-retroreflective compact scan module in an electro-optical reader includes a laser light source, a photosensor and an electromagnetic coil mounted at one surface of a printed circuit board. The laser emits a laser beam perpendicular to the board, and is redirected to an oscillatable scan mirror which is magnetically centered to a rest position when the coil is de-energized. Electrical circuitry is mounted at an opposite surface of the board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.