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US 5,323,091 AGranted
Starting source for arc discharge lamps
AssigneeGTE Products Corporation
InventorJames C. Morris
Life of this patent
Estimating the term…
Abstract
An ultraviolet starting aid is formed in a metal halide arc discharge lamp by forming a cavity in a press seal portion of an arc tube. An electrode is provided in the cavity which either extends external to the press seal, or the electrode may be a portion of molybdenum ribbon used in the press seal.
Claims15
An arc tube assembly comprising:
- a light transmissive arc tube and a first fill material contained in an interior of said arc tube for supporting an arc discharge, said arc tube including at least one press seal;
- means for coupling electrical energy to the interior of said arc tube;
- and
- a starting source comprising a sealed cavity in said press seal, a second fill material in said cavity for supporting emission of ultraviolet radiation, and means for coupling electrical energy to said cavity, said starting source emitting ultraviolet radiation which assists in initiation of an arc discharge within the interior of said arc tube.
1 more element
An arc tube assembly comprising:
- a light-transmissive arc tube, electrodes mounted within an interior of said arc tube and a first fill material contained in the interior of said arc tube for supporting an arc discharge, said arc tube including press seals at opposite ends;
- means for coupling electrical energy to said electrodes;
- and
- a starting source comprising a sealed cavity in one of said press seals, a second fill material in said cavity for supporting emission of ultraviolet radiation and means for coupling electrical energy to said cavity, said starting source emitting ultraviolet radiation which assists in initiation of an arc discharge within the interior of said arc tube.
1 more element
An arc discharge lamp comprising:
- a light-transmissive arc tube containing a first fill material for supporting an arc discharge;
- an outer envelope enclosing said arc tube;
- means for coupling electrical energy to said arc tube;
- a press seal defining a cavity therein, said cavity containing a second fill material for supporting emission of ultraviolet radiation;
- and
- means for coupling electrical energy to said cavity whereby ultraviolet radiation is emitted for assisting in initiation of an arc discharge within said arc tube.
3 more elements
Dependencies are inferred from the claim text.