Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1991-05-13
1992-07-28
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313488, 313493, 313573, 313609, 313610, 313634, 313635, 313642, H01J 6142, H01J 6134, H01J 6135
Patent
active
051343363
ABSTRACT:
A miniature, low-wattage fluorescent lamp includes a double-bore inner capillary tube having a pair of ends and a convoluted shape. The inner capillary tube is comprised of a vitreous material (e.g., quartz) which is capable of transmitting ultraviolet radiation. A pair of electrodes (e.g., mercury pool) is located at one end of the inner capillary tube and disposed within respective bores. An ionizable medium is enclosed within the inner capillary tube and includes an inert starting gas and a quantity of mercury. When energized, the ionizable medium generates an arc discharge between the electrodes consisting of ultraviolet radiation. A phosphor coating responsive to the ultraviolet radiation is disposed on an outer surface of the inner capillary tube and remote from the arc discharge. An outer jacket of vitreous material surrounds the inner capillary tube and contains an inert gas at a predetermined pressure.
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Chakrabarti Kirti B.
Levin Robert E.
Bessone Carlo S.
GTE Products Corporation
Patel Ashok
Yusko Donald J.
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