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:
May. 27, 2003
Filed:
May. 13, 1999
Applicant:
Inventor:
Yoshiyuki Nada, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/22 ;
U.S. Cl.
CPC ...
G06K 9/22 ;
Abstract
In the optical system of a code reader, its MTF best position on the subject side at a spatial frequency corresponding to a code pattern is set to be present at a given distance from the end surface of the code reader. The light receiving surface of a photosensor is set larger than the image of one block of the code pattern which is formed through the optical system.