Bar code symbol reading system employing an extremely elongated laser scanning beam capable of reading poor and damaged quality bar code symbols with improved levels of performance
US8376233B2 · kind B2 · utility
548Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2011 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Jun 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/146
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The system includes a housing having a light transmission window and produces an extremely-elongated laser beam having an elongation ratio (ER) that is defined as greater than 4.5 for any point within the working range of the laser scanning bar code symbol reading system. A laser scanning mechanism is provided for scanning the extremely-elongated laser beam out the light transmission window and across a scanning field defined external to the housing, in which a bar code symbol is present for scanning by the extremely-elongated laser scanning beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.