Starting aid for HID lamp

Details Starting aid for HID lamp Starting aid for HID lamp

2009-06-02

2011-11-22

Patel, Vip (Department: 2889)

Electric lamp and discharge devices

With gas or vapor

Three or more electrode discharge device

C313S607000

Reexamination Certificate

active

08063564

ABSTRACT:
An arc discharge light source (10) comprises a translucent body (12) having a hollow center14and oppositely disposed ends (16, 18). A cathode lead-in20is positioned in one of the ends (16) and terminates at a first end (22) in a cathode electrode (24) within the hollow center (14) and a second end (26) in a connector (28) for a power supply. An anode lead-in30is positioned in the other of the ends (18) and terminates at a first end (32) in an anode electrode (34) within the hollow center (14) and at a second end (36) in a connector (40) for a power supply. A space (42) between the cathode electrode (24) and the anode electrode (34) within the hollow center (14) defines an arc gap. An arc generating and sustaining medium (43) is provided within the hollow center (14) and a starting aid (41) comprising an auxiliary electrode (44) substantially surrounds the anode electrode (34) and is positioned solely on the external surface (46) of the body (12) and is electrically connected to the cathode lead-in (20).

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U.S. Appl. No. 12/146,485, filed Jun. 26, 2008.

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