Black quartz glass tube is a new type quartz glass tube. Compared with transparent quartz tube, it blocks the ultraviolet and most of the visible light, and turn them into infrared radiation; compared with milky white quartz tube, it has good property of infrared penetrating, with the ability to load several times energy per unit area; compared with quartz tubes having the surface coating, black quartz glass tube enjoys low cost, stable performance and so on. Therefore, it is the excellent material for production of infrared emitters, especially suitable for the production of high-power, small size infrared radiation devices!