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US 2008/0174241 A1Published application
Micro-discharge devices and applications
AssigneeUltraviolet Sciences, Inc.
InventorsJames Randall Cooper, Karl H. Schoenbach
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Abstract
A high pressure gas discharge device and methods of using the device as a UV gas discharge light source are disclosed. The device has a cathode covered partially with a dielectric layer which separates the cathode from an anode. A discharge device utilizes one or more microhollows in the uncovered part of the cathode. Methods of utilizing the discharge devise as a gas discharge light source for producing ultapure water.
Claims20
A gas discharge light source comprising:
- a cathode having a portion of its surface covered with a dielectric wherein said dielectric has an opening that forms at least one uncovered surface region of said cathode, wherein at least a longest dimension of said surface region is substantially greater than the dielectric thickness;
- an anode spaced from said cathode by at least the dielectric thickness, wherein an edge of said anode is positioned at or near an edge of said opening;
- and
- a gas discharge medium in contact with the anode and the cathode.
1 more element
Dependencies are inferred from the claim text.