Miniature low-wattage neon light source
First Claim
Patent Images
1. A light source comprising:
- a double-bore capillary tube having a pair of ends and a convoluted shape, said capillary tube including a pair of U-shaped portions, each of said U-shaped portions having a pair of legs associated therewith, the legs of each pair being in a contiguous relationship or closely adjacent to each other;
a pair of electrodes located at one end of said capillary tube and disposed within the respective bores; and
an ionizable medium enclosed within said capillary tube and consisting of neon at a pressure within a range of from about 300 to 600 torr.
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Accused Products
Abstract
A source of red light includes a double-bore capillary tube having a pair of ends and a convoluted shape. A pair of electrodes is located at one end of the capillary tube and disposed within respective bores. An ionizable medium is enclosed within the capillary tube and includes neon at a pressure from about 300 to 600 torr. When energized, the ionizable medium generates an arc discharge between the electrodes consisting primarily of radiation in the range of from 590 to 670 nanometers. An outer jacket of vitreous material may surround the capillary tube and contain an inert gas (e.g., nitrogen) at a predetermined pressure.
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Citations
2 Claims
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1. A light source comprising:
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a double-bore capillary tube having a pair of ends and a convoluted shape, said capillary tube including a pair of U-shaped portions, each of said U-shaped portions having a pair of legs associated therewith, the legs of each pair being in a contiguous relationship or closely adjacent to each other; a pair of electrodes located at one end of said capillary tube and disposed within the respective bores; and an ionizable medium enclosed within said capillary tube and consisting of neon at a pressure within a range of from about 300 to 600 torr. - View Dependent Claims (2)
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Specification
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Current AssigneeOSRAM Sylvania Inc. (Ams-Osram AG)
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Original AssigneeGTE Products Corporation (Ams-Osram AG)
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InventorsLevin, Robert E., Chakrabarti, Kirti B.
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Primary Examiner(s)Yusko, Donald J.
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Assistant Examiner(s)Patel, Ashok
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Application NumberUS07/698,882Time in Patent Office512 DaysField of Search313/25, 313/493, 313/634, 313/572, 313/573, 313/576, 313/609, 313/610, 313/611, 313/612, 313/637, 313/638, 313/642, 313/643US Class Current313/25CPC Class CodesH01J 61/16 having helium, argon, neon,...H01J 61/327 "Compact"-lamps, i.e. lamps...H01J 61/84 Lamps with discharge constr...
