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The metal halide lamp is developed from high-pressure mercury lamp and is made of high-purity quartz tube. The quartz tube is filled with iodide containing mercury, argon, gallium, iron iodide and some rare metal halides. After sealing with a circuit, and using a metal lamp head or a ceramic lamp head with a lead as a terminal, gallium iodide has the effect of introducing 403 nm and 417 nm lines in the spectrum produced by the metal halide lamp, which is remarkable for the diazo compound. Processing. Iron iodide is a halide that provides broad-spectrum ultraviolet radiation and enhances the spectral output of the lamp in the 380 nm region. Metal halide lamps with iron iodide added are very good for photopolymer and daylight film exposure systems. Effect. The spectral energy of metal halide lamps is very consistent with the absorption spectra of certain materials. It can be used for very fast hardening reactions and can be widely used in film, screen, PCB, diazo film and plate exposure.
In addition, metal halide lamps can be used in different printing and surface coating industries. Metal halide lamps are based on mercury-based UV lamps containing mercury and argon. Iron Iodide and Gallium Iodide are added. Or other rare earth metal Iodide (Rare Earth Metal Iodide).
The most common metal halide lamps are Iron Iodide and Gallium Iodide iron-doped halogen lamps. The 380nm is the highest peak, which is ideal for photopolymer and daylight film exposure. Blending halogen lamps, especially enhanced peaks at 403nm and 417nm, the highest 417nm peak has a very significant and good effect on the exposure of Diazo materials. Although the high-pressure mercury lamp has high light efficiency, the light color is not good and the color rendering is poor. In order to increase the red spectral composition, various kinds of metal halides are added to the high-pressure mercury lamp, and according to the type and proportion of the added metal halogen, tens of thousands of different light colors can be manufactured.
The sodium-niobium-indium lamp is suitable for the aquarium. The metal halide lamp is sodium sulfonate-sulfonated sulfonium---sulfonated indium lamp, referred to as sodium indium lamp, which has high light efficiency (75-80 lumens/watt). The light color is good (color temperature is 6000K), the color rendering property is good (the apparent pain rate index is 60-65, the color rendering index of the high pressure mercury lamp is only 20--30, and the life is long, which is one of the preferred lamps.
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