| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibrating reed in which variation of the CI value can be stabilized among vibrating-reed elements, even if the base part is shortened and the entire vibrating reed can be reduced in size, a vibrator having it, and an oscillator and an electronic apparatus comprising that vibrator. SOLUTION: The vibrating piece comprises a base part, and a vibrating arm part projecting therefrom, wherein a groove is provided in the surface part and/or the rear side part of the vibratory arm part and a cut is made in the base part. Even if the vibratory arm part generates vibration having a vertical component, it is prevented from leaking to the base part side by the notch. Consequently, variation in the CI value can be stabilized among vibrating reed elements, while reducing the size of the base part.
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