CCD-based bar code scanner with optical funnel
US5859418A · kind A · utility
59Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1996 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jan 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical funnel evenly distributes light from an array of LEDs to a bar code. A support member with a central aperture holds the LEDs. A shroud with an angled reflective interior surface spreads the light from the LEDs to the bar code. The funnel also optically isolates the LEDs from the photodector in the scanner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.