| 摘要 |
Beams 70a, 70b, 70c and, 70d. of an angular velocity sensor 100 is provided with a folded type beam 73 that has a spring constant which is smaller along the excitation direction (x-axis direction) than along a detecting direction (y-axis direction), and a straight type beam 75 that has a spring constant which is smaller along the detecting direction (y-axis direction) than along the excitation direction (x-axis direction). The folded type beam 73 is arranged closer to the mass portion 40 than the straight type beam 75. The detecting member 60 is disposed on a farther beam portion of the beam 70b, wherein the farther beam portion is arranged farther away from the mass portion 40 than the folded type beam 73.
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