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:
Apr. 12, 2011
Filed:
Mar. 12, 2009
Kazunari Fujii, Kawasaki, JP;
Hideta Nishizawa, Kawasaki, JP;
Kazufumi Onuma, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An oscillator device includes an oscillation system having a first oscillator, a second oscillator, a first resilient supporting member and a second resilient supporting member, wherein the oscillation system has at least two frequencies of natural oscillation mode around the torsion axis which include a first resonance frequency fand a second resonance frequency f, wherein there is a relationship that fis approximately two-fold of f, wherein Δf which is expressed as Δf=ff×fhas a relationship of Δf<0, and wherein the drive control means supplies, to the driving means, a driving signal which is comprised of a driving signal based on synthesizing a first driving signal having a first driving frequency and a second driving signal having a second driving frequency, and which is such driving signal that, when a lower-frequency side driving frequency among the first and second driving frequencies is denoted by Dfand a higher-frequency side driving frequency is denoted by Df, it satisfies relationships Dff, Dffand Df×2=Df