Patent ID: 8910517
Filing Date: 2014-12-16
Classification: G01C,H01L

Abstract:
1. An angular velocity sensor comprising: an annular frame having: a drive part configured to cause the annular frame to oscillate within a first plane to which the first and second directions belong, in an oscillation mode where, when one of the first and second sets of beams comes closer to each other, the other set separates from each other, and when the one set separates from each other, the other set comes closer to each other; a first detection part configured to detect an angular velocity about an axis in a third direction orthogonal to the first and second directions, based on an amount of deformation of the annular frame oscillating in the oscillation mode within the first plane; a support part which is connected to the connection parts to support the annular frame; a first pendulum part which is disposed at the connection parts so as to extend in a fourth direction intersecting with the first and second directions within the first plane, and oscillates within the first plane in synchronization with oscillation of the annular frame; a second pendulum part which is disposed at the connection parts so as to extend in a fifth direction intersecting with the first, second, and fourth directions within the first plane, and oscillates within the first plane in synchronization with oscillation of the annular frame; and a second detection part which detects angular velocities about axes in two predetermined directions within the first plane, based on amounts of deformation of the first and second pendulum parts in directions orthogonal to the first plane.