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International Conference on Information Technology and Scientific Management (ICITSM 2010 E-BOOK)

Tianjin,China,12.20-12.21,2010

ISBN: 978-1-935068-40-2 Scientific Research Publishing, USA

E-Book 1078pp Pub. Date: December 2010

Category: Computer Science & Communications

Price: $220

Title: Optical Design for Highlight LED Headlamp
Source: International Conference on Information Technology and Scientific Management (ICITSM 2010 E-BOOK) (pp 911-913)
Author(s): Tiecheng Gao, Engineering 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
Yanjin Ai, College of Information and Electronics Engineering, Tianjin professional college, Tianjin, China
Yulan Li, Military Logistics Department, Academy of Military Transportation, Tianjin China
Abstract: A new optical structure was designed for the developed LED headlamp. The far beam optical structure was realized with a free form reflector which collect as much as the light to satisfy the demand on light distribution for far beam; the passing beam was composed of three identical cells to ensure enough illumination and each cell have a LED with five 1w led chip packaged in line. A dissymmetry ellipsoidal reflector was used to concentrate the rays and a shade was employed to produce the cut-line. The optical performance was simulated with ASAP (advance system analysis program) and the results show a good agreement with the requirement for headlamp in national standard
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