Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1990-05-15
1992-05-12
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315 39, 315344, H05B 4116
Patent
active
051131218
ABSTRACT:
An electrodeless lamp may be formed with a capsule having a radiant energy transmissive material defining an approximately cylindrical enclosed volume having an external length less than 20.0 millimeters, and an outer diameter less than 8.0 millimeters. The enclosed volume is filled with a lamp fill excitable by a high frequency electromagnetic field to produce radiant energy. The small size capsule produces a particularly efficient, orientation tolerant arc discharge. The arc is then highly stable as to position, yielding a good optical source to design for. The temperature gradient is small, thereby yielding little thermal stress on the capsule. An electrodeless HID headlamp system may be formed with the efficient capsule from a radio frequency source operating from the power supply of a typical automobile. The headlamp system includes a high frequency power source, a transmission line, a coupler, an excitable lamp fill captured in a lamp capsule, a reflector and a lens.
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Schiller, S., Byer, R. L., "High Resolution Spectroscopy of Whispering Gallery Modes in Large Dielectric Spheres", Optics Letters, vol. 16, No. 15, Aug. 1, 1991.
Fohl Timothy
Lapatovich Walter P.
Proud Joseph M.
GTE Laboratories Incorporated
LaRoche Eugene R.
Meyer William E.
Ruoff Carl F.
Zarabian A.
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