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US 12,360,180 B2Granted
Magnetic field sensor head and method for manufacturing same
AssigneesCitizen Finedevice Co., Ltd., Citizen Watch Co., Ltd.
InventorsMitsunori Miyamoto, Toshiya Kubo
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Abstract
A magnetic field sensor head includes an optical fiber, a GI fiber whose one end is optically connected to the optical fiber, a magnetic film joined to the other end of the GI fiber, a reflection film joined to a surface of the magnetic film opposite to a surface joined to the magnetic film, and a support member joined to a surface of the reflection film opposite to the surface joined to the magnetic film.
Claims10
A magnetic field sensor head comprising:
- an optical fiber;
- a GI fiber whose one end is optically connected to the optical fiber;
- a magnetic film joined to the other end of the GI fiber;
- a reflection film joined to a surface of the magnetic film opposite to a surface joined to the magnetic film;
- and
- a support member joined to a surface of the reflection film opposite to the surface joined to the magnetic film, and forming a rod-shaped member at one end together with the magnetic film and the reflection film.
3 more elements
A manufacturing method of a magnetic field sensor head comprising:
- melt bonding one end of an optical fiber to one end of a GI fiber;
- and
- adhering a square-shaped bottom surface of a square columnar rod-shaped member having a support member on which a reflection film and magnetic film are formed, by adherence to the other end of the GI fiber, wherein
- the length of one side of the bottom surface of the magnetic film is equal to or more than 20 μm, and is equal to or less than the cladding diameter of the GI fiber.
1 more element
Dependencies are inferred from the claim text.