Electrodeless light source having a lamp holding fixture which has a separate characteristic impedance for the lamp starting and operating mode
Termination fixture for an electrodeless lamp
Electrodeless light source utilizing a lamp termination fixture having parallel capacitive impedance matching capability Patent #: 3943403
ApplicationNo. 632328 filed on 11/17/1975
US Classes:315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)313/248, Conductive envelope supports plural electrodes313/261, Plates or bars at opposed ends of electrodes313/344, Coiled313/567, WITH GAS OR VAPOR333/33Having long line elements
ExaminersPrimary: Chatmon, Saxfield Jr.
Attorney, Agent or Firm
International ClassH01J 65/04 (20060101)
AbstractA light source includes a source of high frequency power, an electrodelsss lamp and a termination fixture for coupling power to the lamp, the fixture having an outer conductor and an inner conductor whose length is adjustable for providing dynamic matching of the impedance of the lamp during the operating mode to the output impedance of the source. Variations in the power level from the source, such as is desirable in providing lamp brightness selectivity, vary both the real and imaginary components of the lamp impedance, and corresponding adjustments of the inner conductor length provide a tuning technique to compensate for these variations.