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Proceedings Paper

Design and optimization of automotive headlamps based on projection system with double ellipsoidal reflector
Author(s): Chi-Tang Ma; Kao-Hsu Chou; Yi-Yung Chen; Allen Jong-Woei Whang; Kuan-Yu Chen
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Paper Abstract

Due to the energy crisis, the issue about how to improve the efficiency of lighting gains popularity. Many researches focus on using LED to be the light source of car lamps because LED has the advantages, such as low power consumption, adjustable luminous intensity, high color rendering index, long lifetime, and short reaction time, and the car lamps will become smaller and lighter. In our design, the LED headlamp consists three parts: a double ellipsoidal reflector, an aspherical lens, and a baffle. The double ellipsoidal reflector can improve the luminous flux in front of the headlamp and provide adequate illumination; the aspherical lens can eliminate spherical aberration; and the designed location of baffle can solve the glare problems. According to the optical simulation, the design successfully fits the request of intensity distribution in the ECE regulation.

Paper Details

Date Published: 14 May 2010
PDF: 9 pages
Proc. SPIE 7717, Optical Modelling and Design, 77170M (14 May 2010); doi: 10.1117/12.853510
Show Author Affiliations
Chi-Tang Ma, National Taiwan Univ. of Science and Technology (Taiwan)
Kao-Hsu Chou, National Taiwan Univ. of Science and Technology (Taiwan)
Yi-Yung Chen, National Taiwan Univ. of Science and Technology (Taiwan)
Allen Jong-Woei Whang, National Taiwan Univ. of Science and Technology (Taiwan)
Kuan-Yu Chen, National Taiwan Univ. of Science and Technology (Taiwan)

Published in SPIE Proceedings Vol. 7717:
Optical Modelling and Design
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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