Dielectric barrier discharge lamp
AssigneeUshiodenki Kabushiki Kaisha
InventorsHiromitsu Matsuno, Tatsushi Igarashi, Tatsumi Hiramoto, Yasuo Oonishi
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Abstract
A dielectric barrier discharge lamp has a discharge vessel having a discharge chamber filled with a discharge gas. Excimer molecules are developed due to a dielectric barrier discharge. The discharge vessel is equipped with a window for the output of the light radiated from the excimer molecules. A getter space, equipped with a getter, communicates with the discharge chamber. A common wall separates the discharge chamber from the getter space, or a separately arranged getter space is connected to the discharge chamber via a tube. In one form, the discharge vessel and window is made of quartz glass containing less than 10 ppm of OH radicals by weight.
Claims15
In a dielectric barrier discharge lamp wherein the discharge container is filled with a discharge gas in which excimer molecules are formed by means of a dielectric discharge and which has a window for transmitting a light generated from the excimers, the improvement comprising a getter positioned in the discharge container exposed to the discharge gas.
In a dielectric barrier discharge lamp in which a discharge vessel defining a discharge chamber is filled with a discharge gas that produces excimer molecules due to a dielectric barrier discharge, said discharge vessel being equipped with a window for the output of light radiated by the excimer molecules, the improvement comprising a getter space being provided, a getter located in said getter space and means communicating the discharge chamber with the getter space such that substantially no discharge plasma penetrates into the getter space.
In a dielectric barrier discharge lamp, in which a discharge vessel is filled with a discharge gas that forms excimer molecules by means of a dielectric barrier discharge, and which is provided with a window from which the light that has been radiated by the excimer molecules exits, the improvement comprising the window consisting at least in part of quartz glass having a content of OH radicals less than about 10 ppm by weight.
In a dielectric barrier discharge lamp having a vessel which is filled with a discharge gas converted to excimers by a dielectric barrier discharge and which has a window for transmitting a light generated from said excimers, the improvement comprising a getter room communicating with the discharge space and the getter disposed in a getter room.
Dependencies are inferred from the claim text.