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. 29, 2009
Filed:
Mar. 12, 2007
Izumi Yamamoto, Tokorozawa, JP;
Takashi Moriya, Tokorozawa, JP;
Tomoo Ikeda, Tokorozawa, JP;
Atsushi Murakami, Tokorozawa, JP;
Akihiro Shioji, Tokororzawa, JP;
Izumi Yamamoto, Tokorozawa, JP;
Takashi Moriya, Tokorozawa, JP;
Tomoo Ikeda, Tokorozawa, JP;
Atsushi Murakami, Tokorozawa, JP;
Akihiro Shioji, Tokororzawa, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
An inclination of an inclined surface formed by working a ridge of a resonator is set to be within a predetermined angular range, whereby a leakage of vibration in the out-of-plane direction is reduced, the leakage of vibration being generated according to the detuning degree adjustment. In addition, a single laser beam is irradiated onto the ridge at an incident angle within a predetermined angular range, whereby a simple working on the inclined surface is established for the leakage vibration adjustment. A degree of the leakage vibration of the resonator is determined based on a relationship with the drift amount that is a ratio of the angular velocity change, and the inclination of the inclined surface is set to be within a predetermined angular range, thereby suppressing the drift amount.