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:
Dec. 11, 2007
Filed:
Sep. 30, 2004
Kunihiko Ito, Chiryu, JP;
Hisashi Shigekusa, Okazaki, JP;
Kunihiko Ito, Chiryu, JP;
Hisashi Shigekusa, Okazaki, JP;
Denso Wave Incorporated, Tokyo, JP;
Abstract
An optical information reading apparatus for reading information codes such as a bar code and a two-dimensional code includes, an image-forming lens fixed at a given point and imaging a reflection light from the information code, an optical sensor locating at a position relative to that of the image-forming lens and receiving an image formed by the image-forming lens, a light path bending unit bending the reflection light between the image-forming lens and the optical sensor a plurality of times, a shifter shifting the light path bending unit, a distance measurement unit measuring the distance from the information code to the reading apparatus and a controller controlling the shifter based on the measurement result of the distance measurement unit. The light path length between the image-forming lens and the optical sensor is changed by shifting the light path bending unit using the shifter.