Image reading unit and image reader
US7894105B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0418
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reader includes two rows of image reading element arrays, that is, a first image reading element array and a second image reading element array, and a first rod lens array and a second rod lens array, disposed in correspondence with the first and second image reading element arrays and having different focal positions, in order to read an image on a transmission original in optimal focus with a CIS scanner using the rod lens arrays as when an image on a reflection original is read. The second image reading element array provides higher resolution, and has a shorter reading length. The focal length of the second rod lens array is greater than that of the first rod lens array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.