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1 引言典型钠 -钪石英金属卤化物灯的显色指数(ＣＲＩ)为 6 5～ 75。采用二向色薄膜 (涂层 )可以提高这些灯的颜色特性和光效。涂层技术的新进展增加了薄膜 (涂层 )的热容量和实用性并使其应用于像金属卤化物电弧管这样大弯曲表面成为可能。这种涂膜技术与高效电弧管设计结合
1 Introduction The color rendering index (CRI) of a typical sodium-scandium-based metal halide lamp is 65-75. The use of dichroic films (coatings) increases the color and light efficiency of these lamps. Recent advances in coating technology have increased the heat capacity and practicality of the film (coating) and made it possible to apply it to such large curved surfaces as metal halide arc tubes. This coating technology and high efficiency arc tube design combined