Contact-type image sensor
US4942481A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1988 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Jul 11, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/0316
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A contact-type image sensor comprising a light source that illuminates the manuscript to be read; photodetectors that convert the light reflected by the manuscript into an electrical signal; a substrate that is disposed between the photodetectors and the manuscript; an optical fiber array that is constituted by a bundle of optical fibers that are buried in the substrate, the optical fiber array introducing the reflected light from the manuscript into the light-receiving surfaces of the photodetectors; and a light-absorbing substance that is disposed on the outer surface of each of the optical fibers, wherein the light-absorbing substance is disposed on the outer surface of each of the optical fibers, except for the region with a given length from the end of the optical fiber array that faces the manuscript.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.