Methods for illuminating documents
US6178014A · kind A · utility
2Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An arrangement for illuminating objects wherein a large number of objects are rapidly and continuously transported past one or more stations, each illuminated by a cylindrical, integrating Lambertian reflecting/diffusing cavity having one or more like light sources therein so as to generate and project a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating optical guide means to couple said illumination beam to the face of the objects at said station and to couple the reflected image of the object back to the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.