Patent ID: 9255802
Filing Date: 2016-02-09
CPC Classification: G01C,H03B,H03H

Claim Text:
1. A resonator element comprising: a base portion; and a vibrating arm which extends from the base portion in a plan view and on which a weight portion is provided, the vibrating arm having a distal end portion on the opposite side of the base portion, the distal end porting having first and second surfaces facing in opposite directions, wherein the weight portion includes the vibrating arm is arranged to receive a laser beam from outside the vibrating arm at the second surface of the distal end portion, and an area on the second surface where incidence of the laser beam to the inside of the vibrating arm is allowed, is disposed in a position overlapped with the second weight portion in a plan view, the second surface including a material allowing transmission of the laser beam, and the material being exposed at the area on the second surface where incidence of the laser beam to the inside of the vibrating arm is allowed.