ELECTRODELESS DISCHARGING TUBE APPARATUS FOR MICROWAVE

PURPOSE:To make emission stable instantaneously by a method wherein a discharging tube of an ultraviolet ray source is made electrodeless, and microwaves are absorbed into the discharging tube with a microwave coupling portion whose antenna portion is provided in parallel with the discharging tube....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OTAKE KOHEI, KAWAHARA YOSHITAKA, HASEBE KINGO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To make emission stable instantaneously by a method wherein a discharging tube of an ultraviolet ray source is made electrodeless, and microwaves are absorbed into the discharging tube with a microwave coupling portion whose antenna portion is provided in parallel with the discharging tube. CONSTITUTION:With a microwave electrodeless discharging tube 15 which causes plasma discharge with excitation of microwave used as an ultraviolet ray source, this discharging tube 15 is placed in a cavity with its one face opened to realize constitution wherein microwaves generated by a microwave generator are supplied via a waveguide 13 by a microwave coupling portion 14 consisting of at least a pair of conductors, whose one end is fixed to the waveguide 13 or a wall of the cavity, provided in parallel with the electrodeless discharging tube 15. In other words, the microwaves are supplied to the discharging tube 15 by an antenna portion 14-1 of the microwave coupling portion 14, and plasma is generated in the discharging tube 15. By placing the antenna portion 14-1 approximately in parallel with the discharging tube 15, the microwaves can be efficiently absorbed in the discharging tube 15, thereby permitting emission of the discharging tube 15 to be stable.