Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1991-04-15
1992-09-22
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315344, H05B 4124
Patent
active
051500159
ABSTRACT:
An electrodeless high intensity discharge (HID) lamp having an arc tube, a starting aid, and an outer jacket all integrally formed of fused quartz, includes an excitation circuit for providing RF energy effective for initiating and maintaining a gas discharge within the arc tube. The arc tube is positioned within the outer jacket such that a minimum space exists between the outer jacket and the arc tube thereby allowing the efficient coupling of such RF energy to the arc tube by means of an excitation coil wound in close proximate location to the arc tube. The starting aid is of a substantially smaller dimension than the arc tube thereby allowing for a second spacing to occur above the arc tube. This second spacing is effective for optimum thermal management of heat generated within the outer jacket. The upper end of the outer jacket has an integrally formed annular groove for receiving an annular support member effective for securing the HID lamp to a lighting fixture.
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Dakin James T.
Duffy Mark E.
Heindl Raymond A.
Mazza Lawrence T.
Nagle Richard C.
Corwin Stanley C.
General Electric Company
Hawranko George E.
LaRoche Eugene R.
Zarabian A.
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