Diffuse bright field illumination system for a barcode reader
US8857720B1 · kind B1 · utility
6Cited by
2References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2013 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Oct 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One aspect of the present disclosure is related to a barcode reader that includes a bright field illumination system, a dark field illumination system, and an additional illumination system that is better able to illuminate an area of the reader's field of view between the far zone (where bright field illumination is optimal) and the close zone (where dark field illumination is optimal). In this “center zone,” the dark field illumination may not be bright enough and the bright field illumination may not be diffuse enough for reading a barcode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.