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:
Aug. 03, 2004
Filed:
Nov. 07, 2002
Applicant:
Inventor:
Hiroaki Kato, Kanagawa, JP;
Assignee:
Canon Kabushi Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/758 ; G03B 2/762 ;
U.S. Cl.
CPC ...
G03B 2/758 ; G03B 2/762 ;
Abstract
An anti-vibration apparatus includes a table, an actuator system which applies a force to the table, a first system which applies to the actuator system a first signal for causing the actuator system to apply the force in proportion to a displacement of the table, and a second system which applies to the actuator system a second signal for causing the actuator system to apply the force based on an acceleration of the table. The first and second signals are generated by the first and second systems, respectively, so that a natural vibration mode of a system including the table and the actuator system is unchanged.