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:
Jan. 23, 1996
Filed:
Jun. 25, 1992
Applicant:
Inventors:
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235462 ; 235472 ; 359888 ;
Abstract
A non-scanning type optical reading apparatus for reading patterns such as a bar code. The optical reading apparatus comprises an imaging lens for imaging a bar code as a pattern to be read, a CCD line sensor for reading the information of the image of the pattern, and a light damping mirror and/or filter that is provided between the pattern and the CCD line sensor. The central part of the light damping mirror filter is denser than the periphery to achieve a uniform distribution of light on the sensor. According to one embodiment, the filter is a bandpass filter.