Illumination system for use in imaging moving articles
US6352349B1 · kind B1 · utility
28Cited by
25References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for illuminating articles, such as parcels, moving beneath a camera on a conveyor belt. Multiple light sources are positioned alongside the conveyor to direct light angled downwardly and from the side of the conveyor. Each light source has an elongated lamp angled with respect to the surface of the article and a light directing device, preferably a Fresnel lens, positioned to receive light from the lamp and to direct the light toward the surface at an angle equal to or greater than forty degrees from an optical axis of the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.