The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2014
Filed:
Jan. 30, 2012
Hiroyuki Kawano, Tokyo, JP;
Taku Matsuzawa, Tokyo, JP;
Tatsuki Okamoto, Tokyo, JP;
Tadashi Minobe, Tokyo, JP;
Tatsuya Kunieda, Tokyo, JP;
Hiroyuki Kawano, Tokyo, JP;
Taku Matsuzawa, Tokyo, JP;
Tatsuki Okamoto, Tokyo, JP;
Tadashi Minobe, Tokyo, JP;
Tatsuya Kunieda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
The object of the present invention is to provide an image reading apparatus having a large depth of field and being compact in size. The image reading apparatus includes a light source, an imaging optics system, an image pickup device unit, a memory, and a processor. The imaging optics system has a plurality of cells each being an independent optics system arranged in a main scanning direction, and arranged in two rows in a sub-scanning direction. In each of the cells, a first reflective light-gathering optical element, a first plane mirror, an aperture, and a second reflective light-gathering optical element are arranged in this order from a document, and the aperture is arranged at the back focal point position of the first reflective light-gathering optical element to form a telecentric optics system at the side of the document.