Vibrators and vibratory gyroscopes
First Claim
1. A vibrator comprising a driving vibration piece, a detection vibration piece and a base portion connecting said driving vibration piece and detection vibration piece,wherein said driving vibration piece is composed of a bending vibration piece comprising a pair of surfaces parallel with each other and a pair of side faces, and said driving vibration piece has a ratio (WD/TD) of a width WD to a thickness TD of not smaller than 1.5 and not larger than 2.4.
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Accused Products
Abstract
An object of the present invention is to reduce the zero point temperature drift of a vibrator and the deviation or change of the drift among vibrators actually fabricated. A vibrator has a driving vibration piece 2A, a detection vibration piece and a base portion connecting the driving and detection vibration pieces. The driving vibration piece 2A is composed of a bending vibration piece having a pair of surfaces 2c and 2d parallel with each other and a pair of side faces 2a and 2b. The driving vibration piece 2A has a ratio (WD/TD) of a width WD to a thickness TD of not smaller than 1.5 and not larger than 2.4.
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Citations
26 Claims
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1. A vibrator comprising a driving vibration piece, a detection vibration piece and a base portion connecting said driving vibration piece and detection vibration piece,
wherein said driving vibration piece is composed of a bending vibration piece comprising a pair of surfaces parallel with each other and a pair of side faces, and said driving vibration piece has a ratio (WD/TD) of a width WD to a thickness TD of not smaller than 1.5 and not larger than 2.4.
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14. A vibrator comprising a driving vibration piece, a detection vibration piece and a base portion connecting said driving vibration piece and detection vibration piece,
wherein said driving vibration piece is composed of a bending vibration piece comprising a pair of surfaces substantially parallel with each other and a pair of side faces, and said driving vibration piece has a ratio (WD/TD) of a width WD to a thickness TD of not smaller than 0.3 and not larger than 0.8.
Specification