Light-emitting sealed body
AssigneeHamamatsu Photonics K.K.
InventorsAkinori Asai, Naoya Matsumoto
Life of this patent
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Abstract
In a light-emitting sealed body, a metal structure (electron emission structure) containing an easily electron-emitting material is used, so that it is not necessary to perform feeding for discharge between electrodes. Therefore, a feeding member does not need to be connected to the metal structure from the outside of a bulb. In addition, in the light-emitting sealed body, the metal structure is disposed in an internal space S of the bulb and a positioning unit of the metal structure is disposed only in the bulb. Therefore, in the light-emitting sealed body, the metal structure and the positioning unit do not penetrate the bulb and are not buried in the bulb and weakened portions are not formed in the bulb made of glass. Therefore, a sealing state of the bulb can be maintained surely.
Claims15
A light-emitting sealed body comprising:
- a casing of which an internal space is filled with light emission gas;
- an electron emission structure that comprises an easily electron-emitting material emitting electrons by radiation of a laser light;
- and
- a positioning unit that positions the electron emission structure in the internal space,
- wherein the electron emission structure is disposed only in the internal space of the casing,
- the positioning unit is disposed only in the internal space of the casing or at the outside of the casing,
- wherein the electron emission structure has an electron emission unit that is made of a metal member comprising the easily electron-emitting material and a support unit that supports the electron emission unit,
- the support unit is positioned in the internal space by the positioning unit, so that the electron emission structure is positioned in the internal space, and
- the support unit is not buried in the casing.
A light-emitting sealed body comprising:
- a casing of which an internal space is filled with light emission gas;
- an electron emission structure that comprises an easily electron-emitting material emitting electrons by radiation of a laser light;
- and
- a positioning unit that positions the electron emission structure in the internal space,
- wherein the electron emission structure is disposed only in the internal space of the casing, and
- wherein the electron emittance of the easily electron-emitting material is for generating plasma from the light emission gas,
- the electron emission structure comprises a base comprising a high melting-point metal and the easily electron-emitting material is contained in the base, with the base and the easily electron-emitting material comprising mutually differing metals, and
- the positioning unit is exposed to the internal space of the casing while being positioned only in the internal space, or is exposed to exterior space of the casing while being positioned only in the exterior space.
Dependencies are inferred from the claim text.