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:
Feb. 18, 2014
Filed:
Jun. 23, 2009
Mutsumi Tanida, Osaka, JP;
Masami Sakiyama, Osaka, JP;
Masayuki Yoshida, Amagasaki, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
A two-dimensional code reading deviceis provided with image pickup devicewhich receives light reflected from either of a first inclined portionand a second inclined portionin a direction forming an angle θ satisfying expression (1) with respect to the normal-line direction R, and light sourcewhich irradiates either of the inclined portions from a direction forming an angle α satisfying expression (2) with respect to the normal-line direction R:30°≦θ≦35°  (1)Δθ=θ−180°+α+2β  (2)where β is less than 90°,