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Optical Design for Highlight LED Headlamp Tiecheng Gao 1 , Yanjin Ai 2 , Yulan Li 3 1Engineering Research Center of Solid-State Lighting (Engineering Research Center of High Power Solid State Lighting Application System, Ministry of Education; Tianjin Solid State Lighting Technic Engineering Center ) , School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin,
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