A sodium-halide type metal halide lamp, which achieves a certain color temperature and color by a certain ratio of strontium and sodium, but the sodium and strontium are consumed differently due to various reasons in the life of the lamp, and sodium due to the photoelectron effect The outer tube of the arc tube migrates; the quartz of the crucible and the glass bulb can form a halide of silicon. If the loss rate of the two is different, the ignition time of the lamp is prolonged, and the proportion of sodium iodide and cesium iodide gradually deregulates, resulting in light color. Gradually changed, resulting in color cast. Similarly, similar disproportionation occurs in the sodium-niobium-indium lamp, which causes color cast. The main methods for solving the color cast are: improving the design, improving the manufacturing process, and trying to control the consumption rate of each metal element in the lamp to delay the rapid occurrence of color cast.
The special requirements for the start-up of metal halide lamps and the complexity of their electrical appliances are in metal halide lamps. Because of the addition of various metal halides in the lamps, the chemical reaction in the lamps is very complicated compared to mercury lamps and sodium lamps. And work brings a series of complex factors. In summary, metal halide lamps are significantly different from other high-intensity discharge lamps, and illumination metal halide lamps have higher starting voltage values.
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