Electric lamp and discharge devices: systems – Pulsating or a.c. supply
Patent
1998-09-28
2000-10-10
Wong, Don
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
315326, 313485, 313487, H01J 162
Patent
active
061305111
ABSTRACT:
A neon gas discharge lamp is provided which produces an acceptable amber color emission for automotive applications. The red emission from the neon discharge when the lamp is operated in a pulsed mode is combined with a green emission from a substituted Y.sub.3 Al.sub.15 O.sub.12 :Ce phosphor coated on the interior surface of the lamp. The resulting amber emission meets both SAE and ECE amber color requirements. In particular, phosphor has the general formula:
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Holloway et al., Optical Properties of Cerium-Activated Garnet Crystals, J. Optical Society of America, 59(1), 60-63, (1969).
Robertson et al., Colourshift of the Ce.sup.3+ Emission in Monocrystalline Epitaxially Grown Garnet Layers, Philips J. Res., 36, 15-30, (1981).
1 Abstract, Proceedings of 8th International Symposium on the Science of Light and Technology of Light Sources (Aug. 30 -Sep., 1998).
Evans Jean M.
Kasenga Anthony F.
Peters Thomas E.
Rothwell, Jr. Harold L.
Clark Robert F.
Lee Wilson
Osram Sylvania Inc.
Wong Don
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