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:
Oct. 26, 2010
Filed:
Jan. 22, 2008
Nobuaki Asai, Nagoya, JP;
Nobuaki Asai, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
The present invention properly adjusts a resonance frequency of an optical scanner. A resonance-type optical scanner includes a reflection mirror which reflects incident light, a first beam portion which is connected to one side of the reflection mirror, a second beam portion which is connected to the other side of the reflection mirror, and first piezoelectric element portions for elastically deforming the first beam portion. By applying a DC voltage component to the first piezoelectric element portions of the resonance-type optical scanner, tension of the first beam portion and tension of the second beam portion are changed. In response to the changes of tensions of the first beam portion and the second beam portion, the resonance frequency of the optical scanner is changed. In a state that a DC voltage component is applied to the first piezoelectric element portions, an AC voltage is applied to the first piezoelectric element portions so as to oscillate the reflection mirror of the optical scanner at a predetermined frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile