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:
Jun. 28, 2005
Filed:
Jul. 21, 2000
Tatsuki Okamoto, Tokyo, JP;
Yukio Sato, Tokyo, JP;
Junichi Nishimae, Tokyo, JP;
Hiroyuki Kawano, Tokyo, JP;
Tatsuki Okamoto, Tokyo, JP;
Yukio Sato, Tokyo, JP;
Junichi Nishimae, Tokyo, JP;
Hiroyuki Kawano, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the invention is to achieve a small and thin irregular pattern reader comprising: a prism possessing a detection surface on which a subject to be detected having an irregular pattern is put and an incident plane having a first angle of inclination to the detection surface and emitting a light reflected on the detection surface corresponding to an incident light incident upon the incident plane; a first optical system possessing a light source and causing a light from the light source to be incident upon the incident plane of the prism with its optical axis substantially in parallel to the detection surface; and a second optical system for transmitting the emission light emitted from the prism to an image pick-up device.