Radio frequency electrodeless ultraviolet source

Abstract

The invention provides a radio frequency electrodeless ultraviolet source and belongs to the technical field of microelectronics and photoelectronics of the electronic information technology. The problems that the power of a low-frequency electrodeless lamp is limited because of hard radiating, the EMC index is difficult to reach, selling price is high, and market promotion is hard are solved. According to the radio frequency electrodeless ultraviolet source, a method for improving working efficiency is used, a coil is used as a sending antenna, a metal shield grid layer is designed to improve light efficiency, a hollow-pipe-shaped core column is used as an effective radiating structure, and the electric design scheme meets the requirement for electromagnetic compatibility. The radio frequency electrodeless ultraviolet source comprises a bulb and a high-frequency electromagnet wave generator. The bulb is of a hollow pipe structure, a sending coil and the metal shield grid layer are arranged in a bulb body, and the high-frequency generator comprises a high-frequency circuit, a planar transformer, a power element and a socket. The radio frequency electrodeless ultraviolet source has the advantages of being high in light efficiency, small in heat emission amount, good in radiating and long in service life, the EMC index meets the national test standard, and development and production cost is low. The high-power ultraviolet source is great in performance.

Description

technical field [0001] The invention belongs to the technical field of microelectronics and optoelectronics of electronic information technology. It adopts measures such as increasing the working frequency, adopting hollow tubular core column, built-in transmitting coil, metal shielding grid layer and anti-electromagnetic radiation in the structure, and becomes a kind of high light efficiency, low calorific value, good heat dissipation, long life, EMC It is an ideal light source whose indicators meet the national testing standards. Background technique [0002] Among various stimulated emission light sources, the price of sodium lamp and metal halide lamp is only about one-third of that of high-frequency electrodeless lamp and one-sixth of that of low-frequency electrodeless lamp, while the luminous efficacy of sodium lamp and metal halide lamp has exceeded 120Lm / W, that is, the luminous efficiency of the straight tube fluorescent lamp can reach 105Lm / W. At present, the p...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the shortcomings of existing electrodeless lamps, provide a new type of radio frequency electrodeless ultraviolet light source, overcome the low efficiency of traditional electrodeless fluorescent lamps, large calorific value, difficult heat dissipation, short service life, serious electromagnetic wave leakage, and EMC indicators Difficult to pass the national testing standards, poor safety performance and the need to use copper rods to help heat dissipation, high development and production costs and many other shortcomings

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