Vibrating element and vibrator
AssigneeSeiko Epson Corporation
InventorsAkinori Yamada, Katsuo Ishikawa, Shuhei Yoshida
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Abstract
A vibrating element includes: a vibrating body having frequency temperature dependency; and a temperature characteristic correcting part provided on a surface of the vibrating body. The temperature characteristic correcting part has a temperature characteristic of at least one of a Young's modulus and a thermal expansion coefficient and is expressed by a temperature characteristic curve which has at least one of an inflection point and an extremal value. In the vibrating element, a temperature of at least one of the inflection point and the extremal value is within an operating temperature range of the vibrating body.
Claims10
A vibrating element, comprising:
- a vibrating body having frequency temperature dependency;
- and
- a temperature characteristic correcting part provided on a surface of the vibrating body, the temperature characteristic correcting part having a temperature characteristic of at least one of a Young's modulus and a thermal expansion coefficient and being expressed by a temperature characteristic curve, the temperature characteristic curve having at least one of an inflection point and an extremal value, wherein
- a temperature of at least one of the inflection point and the extremal value is within an operating temperature range of the vibrating body, and
- the vibrating body includes two kinds of the temperature characteristic correcting parts that have different temperatures of at least one of the inflection point and the extremal value from each other.
A vibrating element, comprising:
- a vibrating body having frequency temperature dependency:
- and
- a temperature characteristic correcting part provided on a surface of the vibrating body, the temperature characteristic correcting part having a temperature characteristic of at least one of a Young's modulus and a thermal expansion coefficient and being expressed by a temperature characteristic curve, the temperature characteristic curve having at least one of an inflection point and an extremal value, wherein
- a temperature of at least one of the inflection point and the extremal value is within an operating temperature range of the vibrating body, and
- one vibrating body is bonded to an upper surface of the temperature characteristic correcting part formed on a surface of the other vibrating body so as to sandwich the temperature characteristic correcting part by two pieces of temperature characteristic correcting parts.
Dependencies are inferred from the claim text.