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. 10, 2023
Filed:
Jul. 15, 2021
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Nobumasa Kitamori, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A vibration device includes a cylindrical body including a cavity, a first opening end surface, and a second opening end surface, a light-transmissive cover directly or indirectly bonded to the first opening end surface of the cylindrical body so as to cover the cavity of the cylindrical body, a piezoelectric body directly or indirectly bonded to the cylindrical body, and a buffer layer provided between at least one of the cylindrical body and the piezoelectric body, and the cylindrical body and the light-transmissive cover. The buffer layer includes an inner end portion on an inner side portion in a direction orthogonal or substantially orthogonal to the axial direction and an outer end portion on an outer side portion in a direction orthogonal or substantially orthogonal to the axial direction. A thickness of the inner end portion is larger than a thickness of the outer end portion.