Color image sensor
US4663535A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | May 22, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A contact type color image sensor reads out a document image at its actual size while moving along the length of the document. The photosensitive cell arrays, each having pixel electrodes which prescribe n photosensitive cells (where n is a positive integer), are aligned on the substrate. Filter films are positioned over the cell arrays. The radiated image light is converted into the three primary color components of red, green and blue, and R, G, B color signals necessary for color reproduction of the document image are obtained from the respective cell arrays. The n photosensitive cells are arranged at a predetermined pitch p along the main scanning direction X in each array, and the cell arrays are arranged at a sub-scanning direction pitch q which is larger than the pitch p by a factor of K (where k is larger than 1 and k.times.n is a natural number).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.