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. 04, 2015
Filed:
Oct. 19, 2012
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/00 (2006.01); B08B 7/02 (2006.01); G02B 27/00 (2006.01); H01L 41/187 (2006.01);
U.S. Cl.
CPC ...
B08B 7/028 (2013.01); G02B 27/0006 (2013.01); G03B 2205/0061 (2013.01); G03B 2205/0092 (2013.01); H01L 41/1871 (2013.01);
Abstract
A piezoelectric device includes an elastic member, an electrical-mechanical energy conversion element fixed to the elastic member, configured to cause the elastic member to generate vibration, and a supporting member that supports the elastic member. The electrical-mechanical energy conversion element is formed of a piezoelectric material in which, in a usage temperature range of the piezoelectric device, a piezoelectric constant decreases along with temperature rise. A supporting member that supports the elastic member is formed of a material in which, in the usage temperature range of the piezoelectric device, Q value increases along with temperature rise.