Compensating device for improving the scanning luminance in a scanner
US6133580A · kind A · utility
14Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A compensating device for improving the scanning luminance of a scanner is disclosed. The compensating device utilizes a plurality of crutch-shaped light tubes to form a light-radiating device, thereby improving the scanning luminance at the two ends of the straight-line portions of the light tubes. Consequently, the object is scanned by a uniform and sufficient radiating light source and precise scanning signals are obtained and processed, thereby improving scanning quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.