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:
Oct. 12, 1993
Filed:
Jun. 10, 1991
Sadhisa Onimaru, Okazaki, JP;
Atsuo Ishizuka, Nishio, JP;
Atsushi Hashikawa, Okazaki, JP;
Yasuhiko Koike, Handa, JP;
Nippondenso Co., Ltd., Kariya, JP;
Nippon Soken, Inc., Aichi, JP;
Abstract
An optical information reading apparatus such as a bar code reader includes a mirror drive unit rotatable to oscillate a movable scanning mirror simultaneously about a first axis and a second axis perpendicular to the first axis so that a laser beam irradiated from a laser unit is directed by the movable scanning mirror vertically and horizontally to scan parallel arranged plural rows bar codes with a raster scanning pattern. Since the raster scanning pattern can be formed by the combination of a single scanning mirror and a single mirror drive unit, the optical information reading apparatus is simple in construction and compact in size. In addition, the number of vertical scanning lines is not limited as opposed to a limited number of vertical scanning lines formed a polygon mirror incorporated in the conventional apparatus.