Document-imaging illumination arrangements with intensity with adjustment
US5089713A · kind A · utility
6Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1991 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Feb 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2007/10485
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A check Sorter-Imager-Processor with two (or more) imaging sites, each lit by a beam through a fibre-optic array, with a lens focusing the beam on each array such that a shift in lens-focus reduces output light from the array, the two sites being thus "matched" in light-intensity by merely focus-adjusting these lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.