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US 12,125,663 B2Granted
Emitter and device provided with same
AssigneeDenka Company Limited
InventorDaisuke Ishikawa
Life of this patent
Estimating the term…
Abstract
An emitter includes an insulator, a pair of terminals attached to the insulator separately from each other, at least one filament attached between the pair of terminals in an arch shape, and an electron source fixed to the filament. The filament has bent portions between a contact with respect to the electron source and contacts with respect to the terminals. A device is provided with the emitter.
Claims8
An emitter comprising:
- an insulator;
- a pair of terminals attached to the insulator separately from each other;
- at least one filament attached between the pair of terminals in an arch shape;
- and
- an electron source fixed to the filament,
- wherein the filament has bent portions between a contact with respect to the electron source and contacts with respect to the terminals, and
- wherein when the emitter is viewed from a side in a state where the pair of terminals are positioned below and the emitter is disposed in a direction in which the electron source is positioned above the pair of terminals, the filament has at least first parts extending upward from the contacts with respect to the terminals, second parts bent from the first parts and extending obliquely upward, and third parts bent from the second parts and extending upward.
4 more elements
An emitter comprising:
- an insulator;
- a pair of terminals attached to the insulator separately from each other;
- at least one filament attached between the pair of terminals in an arch shape;
- and an electron source fixed to the filament,
- wherein the filament has bent portions between a contact with respect to the electron source and contacts with respect to the terminals, and
- wherein when the emitter is viewed from a side in a state where the pair of terminals are positioned below and the emitter is disposed in a direction in which the electron source is positioned above the pair of terminals, a position of a contact between the filament and the electron source is shifted from positions of contacts between the terminals and the filament by 100 μm or longer in a horizontal direction.
3 more elements
Dependencies are inferred from the claim text.