Ultrahigh-voltage metal halogen and mercury lamp

Abstract

The invention discloses an ultrahigh-voltage metal halogen and mercury lamp. The ultrahigh-voltage metal halogen and mercury lamp comprises a lamp body and an electrode; a lamp cavity is formed inside the lamp body; the electrode extends into the lamp cavity; mercury and mercury halide are filled inside the lamp cavity; and one or a combination of gallium halide, lithium halide, zinc halide, arrowhead halide and scandium halide is filled inside the lamp cavity. In the ultrahigh-voltage gold, halogen and mercury lamp, the metal halide is added into the lamp cavity; the electrode head is configured to be a conical tip head to form tip-end discharging, so the red light spectrum can be increased, the blue light spectrum can be enhanced, and the three base colors, namely red, blue and green, tend to balance; therefore, the light color is improved and the brightness is enhanced. Moreover, by limiting the percentage composition of the metal halide, the light color can be further improved, the brightness and the lighting effect can be enhanced, and the problem that the lamp may be blasted under ultrahigh voltage can be avoided effectively.

Description

technical field [0001] The invention relates to an ultra-high pressure metal halide mercury lamp, in particular to a third-generation short-fox ultra-high pressure mercury lamp suitable for high-definition projectors, and belongs to the technical field of gas reflection lamps. Background technique [0002] With the advent of high-definition small-diagonal liquid crystal panels for media projectors, the third-generation ultra-high-pressure mercury of short foxes that use ultra-high-pressure mercury vapor (1MPa or above) to discharge are small, light, and high-brightness lights hit the market. Ultra-high-pressure mercury lamps are mainly used in light reflection or other optical imaging systems. For example, projectors use ultra-high mercury lamps as light sources. The main structure is to set two discharge electrodes in the discharge tube, and the electrodes are electrically connected to the lead-out wires by sealing the molybdenum sheet. The discharge tube is filled with me...

AI Technical Summary

Problems solved by technology

[0003] The common problem of this type of ultra-high pressure mercury lamp is: the brightness of the three primary colors is unbalanced, because only under a very high mercury vapor pressure (20MPa), the red spectrum can reach a certain proportion, which can meet the qualified color effect, but the lamp tube must use purity In the 99.99% high-purity quartz tube, not only the pressure in the lamp tube is high, but the temperature is also high (nearly 1000°C), and the starting voltage is also up to 2500 volts, which directly affects the service life of the mercury lamp

Therefore, the disadvantages of existing products can be summarized as follows: in order to achieve the balance of primary colors, either use filters to suppress blue and green light, sacrifice brightness, or increase steam pressure, increase material selection and manufacturing difficulties, increase costs, or reduce life. The service life of imported ultra-high pressure mercury lamps is generally about 2000 hours, and the price is more than 1000 yuan

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