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US 6,741,036 B1Granted
Gas discharge tube
AssigneeHamamatsu Photonics K.K.
InventorsTomoyuki Ikedo, Kouzou Adachi, Yoshinobu Ito, Ryotaro Matui
Life of this patent
Estimating the term…
Abstract
A flange portion is integrally formed with a stem which forms a sealing envelope for a gas discharge tube. Accordingly, operation for building and fixing the flange portion is not necessary, so that lamp assembly operation is simplified, and mass production is facilitated. In addition, when a gas discharge tube is to be fixed to an external stem setting portion, lamp setting is enabled at higher precision by utilizing positioning holes formed in the flange portion in advance.
Claims10
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 sealing envelope comprising:
- a stem for securing said cathode and anode section by way of respective stem pins independent from each other;
- and
- a side tube, at least part of which is made of a light transmitting material, surrounding said cathode and anode sections and being joined to said stem, and
- wherein said stem has an integrally formed flange portion extending in a direction perpendicular to an axial direction of said side tube and having a positioning reference portion when attaching said gas discharge tube to an external fixing member.
3 more elements
Dependencies are inferred from the claim text.