Adjustable length center conductor for termination fixtures for electrodeless lamps

Patent 4001631 Issued on January 4, 1977. Estimated Expiration Date:

January 4, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3787705

3873884

Electrodeless light source having a lamp holding fixture which has a separate characteristic impedance for the lamp starting and operating mode
Patent #: 3943401
Issued on: 03/09/1976
Inventor: Haugsjaa , et al.

Termination fixture for an electrodeless lamp
Patent #: 3943402
Issued on: 03/09/1976
Inventor: Haugsjaa , et al.

Electrodeless light source utilizing a lamp termination fixture having parallel capacitive impedance matching capability Patent #: 3943403
Issued on: 03/09/1976
Inventor: Haugsjaa , et al.

Inventors

Assignee

GTE Laboratories Incorporated

Application

No. 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

Examiners

Primary: Chatmon, Saxfield Jr.

Attorney, Agent or Firm

International Class

H01J 65/04 (20060101)

Abstract

A 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.