Non-rotating electrodeless discharge lamp system using circularly polarized microwaves

Abstract

Provided is a circularly polarized ultra-high-frequency generator that arranges an elliptic waveguide on the waveguide, where an electromagnetic field passes, by turning at a prescribed angle, and enables the electromagnetic field to arrive at a discharge lamp as circular polarized waves only by the minor axis and / or the major axis of the elliptic waveguide. In a circularly polarized wave converter for electrodeless discharge lamps, a rectangular waveguide that sends linearly polarized microwaves by using a microwave generator is connected with an input cylindrical waveguide straight, the rectangular waveguide, where termination is closed, is connected to the outer periphery surface of the input cylindrical waveguide at right angle, the elliptic waveguide is connected with the input elliptical waveguide straight so that the major axis is rotated at a prescribed angle for the horizontal plane of the input cylindrical waveguide, and a discharge lamp covered with a net body is connected with the cylindrical waveguide fixed on the plate of a reflector straight.

Description

technical field [0001] The present invention relates to a non-rotating electrodeless discharge lamp system using circularly polarized microwaves. Specifically, it relates to the following system, that is, on a waveguide passing through an electromagnetic field, the elliptical waveguide is rotated at a certain angle, and the waveguide is arranged using The inclination of the short and long axes of the elliptical waveguide allows the electromagnetic field to reach the discharge lamp as a circularly polarized wave. Background technique [0002] TE as the lowest fundamental mode in a cylindrical waveguide for general high-output electrodeless discharge lamps 11 Mode excitation, so the electric field of the microwave becomes a linearly polarized wave, but if a spherical lamp is inserted in the electric field of this linearly polarized wave and discharged, the plasma is in the form of TE 11 The mode discharge has an oval shape, and in the case of a high output discharge, local he...

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Problems solved by technology

[0005] However, the above technology, that is, artificially divides the above-mentioned electromagnetic waves into two components and guides them forcibly, and after the lengths of the above-mentioned waveguides are arranged in parallel, a phase difference occurs, the appearance of the discharge lamp becomes larger, and there are problems such as troublesome and inconvenient fabrication. When a dielectric is inserted into the hole, the electromagnetic field is separated into two directions, and a phase difference that causes the speed to differ occurs. The dielectric constant of the dielectric is limited, and there is a problem that the thickness of the mechanism becomes very large in order to achieve the desired level of the dielectric constant.

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