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:
Dec. 08, 2020
Filed:
Jan. 03, 2020
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Katsumi Fujimoto, Nagaokakyo, JP;
Chikahiro Horiguchi, Nagaokakyo, JP;
Yasuhiro Kuratani, Nagaokakyo, JP;
Satoshi Ichihara, Nagaokakyo, JP;
Kiyoyuki Miyazawa, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A method of driving a vibration device including a light-transmitting body and a piezoelectric element connected to the light-transmitting body is provided to vibrate the light-transmitting body. The method atomizes and removes liquid drops sticking to the light-transmitting body. A driving voltage to vibrate the piezoelectric element is swept at a sweep speed in a range of about 1 Hz to about 50 Hz so as to sweep a vibration frequency of the piezoelectric element to cover a frequency range including both of a resonant frequency of the light-transmitting body without liquid drops sticking to the light-transmitting body and a resonant frequency of the light-transmitting body with the liquid drops sticking to the light-transmitting body.