Discharge lamp with internal starting electrode

Details Discharge lamp with internal starting electrode Discharge lamp with internal starting electrode

2007-03-06

2007-03-06

Phan, Tho (Department: 2821)

Electric lamp and discharge devices: systems

Special application

Vehicle

C315S500000, C315S500000, C313S601000, C313S607000, C313S303000

Reexamination Certificate

active

11011390

ABSTRACT:
An arc discharge light source (10) for automotive headlight applications comprises an arc tube (12) having a hollow body (14) arrayed along a longitudinal axis (16) and provided with first and second ends (18, 20). The first and second ends have, respectively, first and second jointure areas (22, 24) with the hollow body (14). Electrodes (26, 28) are sealed respectively in each of the first and second ends (18, 20). An arc generating and sustaining medium is contained within the hollow body. a low-voltage-pulse starting aid (30) is associated with the arc tube and comprises an electrically conductive member (32) having an intermediate portion (34) and proximal and distal ends (36, 38). The intermediate portion (34) extends the length of the hollow body (14) and the proximal and distal ends (36, 38) each terminating in a loop (40, 42) comprised of a single turn of electrically conductive material. The loop (40) from the proximal end (36) surrounds the first jointure area (22) and the loop (42) from the distal end (38) surrounds the second jointure area (24).

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patent: 2002/0057058 (2002-05-01), Honda et al.
patent: 2003/0034738 (2003-02-01), Kanegae et al.

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