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:
Mar. 02, 2004
Filed:
May. 20, 2002
Applicant:
Inventors:
Tamotsu Mizuno, Aichi-ken, JP;
Takamoto Watanabe, Nagoya, JP;
Katsuji Kosaka, Anjo, JP;
Yoshiaki Hoashi, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 3/14 ; G02B 2/608 ;
U.S. Cl.
CPC ...
H01J 3/14 ; G02B 2/608 ;
Abstract
A system working to detect a reciprocating motion of an object such as a scanner mirror of an optical scanner. The system is designed to compensate for an error which is concluded in an amplified sensor signal used to determine a reference position of the scanner mirror and which is sensitive to a change in environmental condition of use such as a change in ambient temperature. The system also works to monitor a change in amplitude of swing of the scanner mirror accurately to keep it constant.