Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
1997-05-06
1999-06-01
Patel, Vip
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
313594, 313601, H01J 1720
Patent
active
059090820
ABSTRACT:
A high intensity discharge lamp comprises an elongated, main arc tube containing a gas fill. First and second in-leads are connected to first and second electrodes within the arc tube, with an arc gap being defined in the arc tube between the electrodes. The fist and second in-leads are adapted to be connected to first and second power leads of a ballast circuit. A starting aid is included for the main arc tube and comprises a path generally parallel to the main arc tube along the arc gap and which is conductive during starting of the main arc tube; an electron barrier disposed between the path and the main arc tube for preventing a substantial amount of photoelectrons from collecting on an outer surface of the main arc tube; and first and second ends of the path being coupled to the first and second in-leads by first and second electrical couplings. The claimed invention enables cold starting of an IUD lamp at higher fill pressures than previously used, for better lamp performance, and enables hot starting of an HID lamp while avoiding the damaging photoelectron effect.
REFERENCES:
patent: 3828214 (1974-08-01), Keefe et al.
patent: 4048539 (1977-09-01), Walker et al.
patent: 4053809 (1977-10-01), Fridrich et al.
patent: 4788475 (1988-11-01), Jacobs
patent: 5047693 (1991-09-01), Roberts et al.
patent: 5059868 (1991-10-01), El-Hamamsy et al.
Block, "Lighting Handbook, Eigth Edition," The Illuminating Engineering Society of North America, New York, New York (1993), p. 219 and copyright page.
Byszewski et al., "Enhanced Starting of HID Lamps," Journal of the Illuminating Engineering Society, Summer 1990, pp. 70-75.
Cohen et al., "Heat Starting a High-Pressure Sodium Lamp," Journal of IES, Jul. 1974, pp. 330-335.
Collins et al., "HPS lamps for use on HPM ballasts," Lighting Design and Application (Illuminating Engineering Society of North America), Sep. 1975, pp. 18-24.
Gregor et al., "Arc Tube Transparency Loss Due to Starting of HID Lamps," Journal of the Illuminating Engineering Society, Summer 1996, pp. 150-159.
Nortrup et al., "Pulse Start of Metal Halide Lamps for Improved Lumen Maintenance," Journal of the Illuminating Engineering Society, Summer 1996, pp. 113-116.
Waymouth et al., "Sodium Loss Processes in Metal Iodide Arc Lamps," Illuminating Engineering, Apr. 1967, pp. 314-220.
Wyner, "Electrolysis of sodium through alumina arc tubes," Journal of IES, Apr. 1979, pp. 166-173.
Collins Byron R.
Speaker Lawrence W.
Bruzga, Esq. Charles E.
General Electric Company
Patel Vip
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