A metal halide lamp pill

Abstract

The present invention relates to a metal halide lamp pill. The metal halide lamp pill contains iodides of scandium, sodium, thorium, thallium and indium, and it also contains iodides of lithium and dysprosium. The weight ratio of each component is: scandium iodide 70-90 10-20 parts of sodium iodide, 0.03-0.1 parts of thorium iodide, 0.05-0.15 parts of thallium iodide, 0.01-0.04 parts of indium iodide, 0.05-0.15 parts of lithium iodide, and 0.05-0.10 parts of dysprosium iodide. The invention changes the spectral components and proportions in the plasma discharge, increases the proportion of visible light, increases the tube wall load of the arc tube, and increases the luminous flux per unit power. The metal halide lamp prepared by using the metal halide lamp pellets of the invention has a quality exceeding the national standard, has a high light efficiency of more than 120Lm / w, and has a service life of more than 12000 hours, thereby achieving the purpose of energy saving and environmental protection.

Description

technical field [0001] The invention belongs to the field of light sources, and in particular relates to a metal halide lamp pill. Background technique [0002] Metal halide lamps are the third-generation light source made by adding various metal halides on the basis of high-pressure mercury lamps. It seals rare earth gases, metal halides and mercury inside the luminous tube. Rare earth gases are mainly used to make metal halide lamps easy to start and can emit strong light immediately after starting, metal halides are used to produce appropriate light output in a stable ignition state, and mercury is used to generate The relatively high inter-electrode voltage required for metal halide lamp operation. Metal halide lamps have the characteristics of high luminous efficiency, good color rendering performance, and long life. They are energy-saving light sources close to daylight color and are widely used in indoor lighting. [0003] Metal halide lamp pellets refer to metal ha...

AI Technical Summary

Problems solved by technology

The photoelectric and color comprehensive technical indicators of metal halides produced by using the latter two ratios have all improved, but it is still difficult to meet the requirements of light source color temperature, light color reproduction and service life for lighting in display windows, printing workshops and other places.