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US Patent 3993927 - Electrodeless light source
US Patent Issued on November 23, 1976
Estimated Patent Expiration Date:
November 23, 1993Estimated 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.
Estimated Patent Expiration Date:
November 23, 1993Estimated 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.AbstractA termination fixture for an electrodeless lamp has dimensions which match the output impedance of a coupled high frequency power source to the real impedance of the lamp when in a discharge condition. The fixture may consist of a pair of coaxial conductors, and the lamp forms the termination load for the ends of the conductors. The length of the conductors is such as to place the lamp one quarter wavelength from the opposite ends of the conductors. The diameters of the conductors are such as to produce a fixture characteristic impedance which matches the lamp impedance to the source output impedance.Other References
| InventorsAssigneeApplicationNo. 570112 filed on 04/21/1975US Classes:315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)315/150, Radiant energy responsive load device315/248, Induction-type discharge device load315/267, Electromagnetic influenced discharge device load315/55Electric generator or piezoelectric deviceField of Search315/55, Electric generator or piezoelectric device315/150, Radiant energy responsive load device315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)315/248Induction-type discharge device loadExaminersPrimary: Kominski, JohnAttorney, Agent or FirmUS Patent References3787705, 3790852, 3826950International ClassH01J 65/04 (20060101) |
