Vibratory gyroscope

A vibratory gyroscope, comprising:

• a plate-shaped vibrator defining an x-z plane, the vibrator including a base portion and parallel first, second and third elastic arms extending from the base portion in a z-axis direction, the first and second elastic arms being separated by a first slit, and the first and third elastic arms being separated by a second slit such that the first elastic arm is located between the second and third elastic arms;
• driving means for generating vibration in at least one of said first, second and third elastic arms in a first direction;
• and
• detecting means for detecting a vibration component in at least one of said first, second and third elastic arms in a second direction when the vibrator rotates around the z-axis direction, the second direction being perpendicular to the first direction;
• wherein a maximum width of the base section is greater than a distance between an outside edge of the second elastic arm and an outside edge of the third elastic arm, both the maximum width and the distance being measured in an x-axis direction;
• wherein the base section of the vibrator includes first and second outer edges, and wherein both the outside edge of the second elastic arm and the outside edge of the third elastic arm define parallel lines extending in the z-axis direction which are located between the first and second outer edges of the base section;
• and
• wherein each of the first, second and third elastic arms includes a common width in the x-axis direction, and wherein a distance in the x-axis direction separating the outside edge of the second elastic arm and the first outer edge of the base section is less than 0.8 times the common width of each of the first, second and third elastic arms.