Contact type image sensor with a fiber array coated in part with an absorber
US5004905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Nov 8, 2009 |
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-detecting element array formed on a substrate, a light source for irradiating an original to be read, and an optical fiber array disposed between said light-detecting element array and said original to be read, said optical fiber array being formed by laminating an optical fiber array member that is composed of optical fibers not coated with an absorber on an optical fiber array member that is composed of optical fibers coated with an absorber, said optical fibers being disposed between said light-detecting element array and said original to be read, and said light source being disposed at the light emission side of said optical fiber array, thereby attaining a precise irradiation of an original with light from a light source and reliably shuts off the leakage to maintain excellent resolution characteristics of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.