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US 2010/0148770 A1Published application
Magnetic field sensor with optically sensitive device and method for measuring a magnetic field
AssigneeRaytheon Company
InventorDevon G. Crowe
Life of this patent
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Abstract
An optically sensitive device includes a material that changes dimension in response to a change in a magnetic field. In an embodiment, the optically sensitive device is configured to measure a change in a magnetic field as a function of the change of dimension of the material.
Claims31
A magnetic field sensor comprising:
- an optically sensitive device including a material that changes dimension in response to a change in a magnetic field;
- wherein the optically sensitive device is configured to measure the change in the magnetic field as a function of the change of dimension of the material.
A method for measuring a magnetic field comprising:
- placing an optically sensitive device into a magnetic field, wherein the optically sensitive device includes a coating or a structure of a material that changes dimension in response to a change in the magnetic field;
- transmitting light onto the optically sensitive device;
- and
- measuring a change in the magnetic field as a function of a change in the dimension of the material.
1 more element
A method for making a magnetic field sensor, the method comprising coating an optically sensitive device with, or incorporating into the optically sensitive device, a material that changes dimension as a function of a changing magnetic field.
Dependencies are inferred from the claim text.