Light source device
AssigneeHamamatsu Photonics K.K.
InventorsAkinori Asai, Kenshi Fukumitsu
Life of this patent
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Abstract
In a light source device, a control unit causes an energy density of a laser light in a lighting start region RS when a laser support light is maintained to be lower than an energy density of the laser light in the lighting start region RS when the laser support light is put on. For this reason, when the laser support light is maintained, a laser light L is radiated to the lighting start region RS at an energy density of a degree where sputtering does not occur. Therefore, in the light source device, because sputtering in a light emission sealing body can be suppressed, a sufficiently long life can be realized.
Claims24
A light source device comprising:
- a laser unit generating a laser light;
- and
- a light source having a light emission sealing body with an internal space in which a light emitting gas is sealed and a metal structure is accommodated,
- wherein a laser support light is put on by heating the metal structure and then irradiating the laser light having an energy density for putting on the laser support light onto the metal structure,
- the laser support light is maintained by continuously irradiating the laser light onto the laser support light that has been put on, and
- a condensing position of the laser light is moved so as to be positioned in a spatial region of the internal space of the light emission sealing body in which the laser support light is separated from the metal structure when maintaining the laser support light.
A light source device comprising:
- a laser unit generating a laser light;
- and
- a light source having a light emission sealing body with an internal space in which a light emitting gas is sealed and a metal structure is accommodated,
- wherein a laser support light is put on by heating the metal structure and then irradiating the laser light having an energy density for putting on the laser support light onto the metal structure,
- the laser support light is maintained by continuously irradiating the laser light onto the laser support light that has been put on,
- the metal structure has an electron emission unit containing an easily electron-emitting material and a support unit supporting the electron emission unit, and
- the metal structure is heated by irradiating the laser light onto the support unit.
A light source device comprising:
- a laser unit that emits a laser light;
- and
- a light source that has a light emission sealing body of which an internal space is filled with light emission gas and into which the laser light enters from one side, and counter electrodes arranged inside the internal space so as to face each other,
- wherein plasma generated in a discharge region between the counter electrodes is maintained as a laser support light by radiation of the laser light, and
- wherein the laser light is condensed at a position separated from the counter electrodes on the one side, and the laser support light is maintained in a region separated from the counter electrodes.
Dependencies are inferred from the claim text.