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Ｕｓｈｉｏ公司对其ＨＰＬ照明产品进行了改进 ,推出了长为 9 5ｍｍ的 6段密集排列的灯丝的光源产品。该系列产品有三种功率选择 375Ｗ ,5 5 0Ｗ和 75 0Ｗ ,主要设计用于ＥＴＣ四组光源的灯具中。其密集排列的灯丝使得椭球形反光碗的效率比过去的旧型号提高了 2 0 % (图1)。图
Ushio Company improved its HPL lighting products by introducing a light source product with 6-length densely arranged filaments of 95mm in length. The series has three power options 375W, 5500W and 75 0W, the main design for the ETC four light source lamps. Its dense arrangement of filaments makes the ellipsoidal reflective bowl efficiency 20% higher than the previous model (Figure 1). Figure