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US 10,310,451 B2Granted
Ceramic temperature-compensated resonator
AssigneeThe Swatch Group Research and Development Ltd
InventorsThierry Hessler, Philippe Dubois, Thierry Conus
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Abstract
A temperature-compensated resonator including a body used in deformation, and a core of the body is formed by a material that is one of glass, ceramic glass, technical ceramic, and metallic glass. At least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the material used for the core, so that at least a first order frequency variation with temperature of the resonator is substantially zero.
Claims41
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of fused quartz,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the fused quartz used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are compensated to be substantially zero based on only the thickness of the single coating that is calculated.
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of a borosilicate glass or an aluminosilicate glass,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the borosilicate glass or the aluminosilicate glass used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are substantially zero based on only the thickness of the single coating that is calculated.
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of a photostructurable glass,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the photostructurable glass used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are substantially zero based on only the thickness of the single coating that is calculated.
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of ceramic glass,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the ceramic glass used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are substantially zero based on only the thickness of the single coating that is calculated.
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of technical ceramic,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the technical ceramic used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are substantially zero based on only the thickness of the single coating that is calculated.
A temperature-compensated resonator comprising:
- a body used in deformation, a core of the body being formed of metallic glass,
- wherein at least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the metallic glass used for the core, and
- the coating is a single coating including a thickness calculated based on a size and a sign of the Young's modulus variation with temperature of the coating, the thickness of the single coating is calculated to include values that affect at least both first and second orders of a frequency variation with temperature of the resonator, and at least the first and second orders of the frequency variation with temperature of the resonator are substantially zero based on only the thickness of the single coating that is calculated.
Dependencies are inferred from the claim text.