Projector and its discharging lamp

Abstract

The invention is a discharge lamp, to be arranged in a projector, comprising lover cover, discharge part and UV source, where the discharge part has a first shaft and is filled with gas and arranged in the lamp cover, and the UV source is arranged a preset distance apart from the first shaft to accelerate exciting the gas to form an lighting beam.

Description

technical field [0001] The present invention relates to a projection device, in particular to a projection device with a discharge lamp. Background technique [0002] There are many kinds of discharge lamps, which can be roughly divided into four categories, high-pressure mercury lamps, metal halide lamps, low-pressure sodium lamps, and high-pressure sodium lamps. Take the high-pressure mercury lamp as an example. Its light-emitting principle uses high voltage to form a super-strong arc between two electrodes, and strikes the ionization of mercury or mercury compound gas in the discharge part. Mercury atoms absorb the kinetic energy of the electrons and convert them into electromagnetic waves that radiate out. When there is a sufficient density of mercury, all the released electromagnetic radiation will be absorbed by the mercury atoms again, making transitions to other energy levels, and releasing visible light. [0003] However, traditional high-pressure mercury lamps us...

AI Technical Summary

Problems solved by technology

There are many safety concerns associated with high voltage, but if the applied voltage is too low when igniting the bulb, it is not easy to strike an arc, and the lamp will not be easily ignited.

In addition, traditional high-pressure mercury lamps and all types of discharge lamps have a common disadvantage. In the hot lamp state, each bulb needs to be cooled before it can be re-lit.

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