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:
Nov. 06, 2012
Filed:
Oct. 28, 2008
Suguru Miyagawa, Tokyo, JP;
Takahiro Akiyama, Kawasaki, JP;
Kazutoshi Torashima, Yokohama, JP;
Takahisa Kato, Tokyo, JP;
Kazunari Fujii, Kawasaki, JP;
Suguru Miyagawa, Tokyo, JP;
Takahiro Akiyama, Kawasaki, JP;
Kazutoshi Torashima, Yokohama, JP;
Takahisa Kato, Tokyo, JP;
Kazunari Fujii, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing an oscillator device having an oscillator supported relative to a fixed member by a torsion spring for oscillation around a torsion axis and arranged to be driven at a resonance frequency, which method includes a first step for determining an assumed value of an inertia moment weight of the oscillator, a second step for measuring the resonance frequency, a third step for calculating a spring constant of the torsion spring, from the assumed value of the inertia moment weight and the measured resonance frequency obtained at said first and second steps, a fourth step for calculating an adjustment amount for the inertia moment of the oscillator or for the spring constant of the torsion spring, based on the spring constant calculated at said third step and a target resonance frequency determined with respect to the resonance frequency of the oscillator, so as to adjust the resonance frequency to the target resonance frequency, and a fifth step for adjusting the resonance frequency of the oscillator to the target resonance frequency based on the calculated adjustment amount.