Image inputting apparatus
AssigneeDainippon Screen Mfg. Co., Ltd.
InventorsMorihiro Takeda, Masanao Nakahara
Life of this patent
Estimating the term…
Abstract
In an optical system, when a binary image is to be read, a first reducing projection lens is located onto an optical axis and focuses an image of the original at a first magnification (relatively high magnification), and a mirror divides the entire image into three divided images which will be then projected onto three CCDs, respectively. On the other hand, when a multivalued image is to be read, a second reducing projection lens is located onto the optical axis and focuses an image of the original at a second magnification (relatively low magnification) which is lower than the first magnification, and the entire image is projected onto one of the three CCDs.
Claims12
An image inputting apparatus for reading an image of an original, comprising:
- an image reading part;
- and
- moving means for moving an original and said image reading part relative to each other,
- wherein said image reading part comprises:
- a plurality of solid linear image sensors;
- and
- an optical system for focusing a binary image of an original at a first magnification, dividing said image into a plurality of divided images and projecting each divided image onto an associated one of said solid linear image sensors during reading of said binary image, said optical system focusing a continuous tone image of an original at a second magnification which is lower than said first magnification and projecting said image onto one of said solid linear image sensors during reading of said continuous tone image.
The image inputting apparatus of claim 9 wherein said variable power optical system comprises a bifocal lens.
Dependencies are inferred from the claim text.