Gas discharge tube having a side tube with glass coating
First Claim
1. A gas discharge tube having a sealed envelope at least a part of which transmits light, said sealed envelope being filled with a gas and being provided with anode and cathode sections disposed therein, electric discharge being generated between said anode and cathode sections, so that the light-transmitting part of said sealed envelope emits predetermined light outside;
- said sealed enveloped comprising;
a stem for securing said anode and cathode sections by way of respective stem pins independent from each other;
a side tube surrounding said anode and cathode sections and being secured to said stem; and
a light projection window secured to said side tube and formed from a material transmitting light, wherein substantially the entire interior surface of said side tube is coated with a glass material or ceramics.
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Accused Products
Abstract
In a gas discharge tube in accordance with the present invention, one or both of the inner wall face and outer wall face of a side tube body are provided with a coating made of a glass material or ceramics. As a result, the side tube body can be made of various materials regardless of properties of the gas filling the inside, whereby the gas discharge tube can have a wider range of processed forms and smaller dimensions at the same time, and its mass production can freely be carried out.
12 Citations
2 Claims
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1. A gas discharge tube having a sealed envelope at least a part of which transmits light, said sealed envelope being filled with a gas and being provided with anode and cathode sections disposed therein, electric discharge being generated between said anode and cathode sections, so that the light-transmitting part of said sealed envelope emits predetermined light outside;
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said sealed enveloped comprising;
a stem for securing said anode and cathode sections by way of respective stem pins independent from each other;
a side tube surrounding said anode and cathode sections and being secured to said stem; and
a light projection window secured to said side tube and formed from a material transmitting light, wherein substantially the entire interior surface of said side tube is coated with a glass material or ceramics. - View Dependent Claims (2)
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Specification
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- Resources
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Current AssigneeHamamatsu Photonics KK
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Original AssigneeHamamatsu Photonics KK
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InventorsAdachi, Kouzou, Ito, Yoshinobu, Matui, Ryotaro, Ikedo, Tomoyuki
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Primary Examiner(s)Day, Michael H.
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Assistant Examiner(s)Williams, Joseph
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Application NumberUS09/602,899Time in Patent Office676 DaysField of Search313/493, 313/25, 313/634, 313/117, 313/112, 313/613, 313/243, 313/292, 313/581, 313/589, 313/590, 313/622, 313/614, 313/313, 313/600US Class Current313/25CPC Class CodesH01J 61/10 Shields, screens, or guides...H01J 61/30 Vessels; ContainersH01J 61/302 characterised by the materi...H01J 61/35 provided with coatings on t...H01J 61/68 Lamps in which the main dis...H01J 63/02 Details, e.g. electrode, ga...H01J 63/08 Lamps with gas plasma excit...
