14 May 2010 Design and optimization of automotive headlamps based on projection system with double ellipsoidal reflector
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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.
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Chi-Tang Ma, Kao-Hsu Chou, Yi-Yung Chen, Allen Jong-Woei Whang, Kuan-Yu Chen, "Design and optimization of automotive headlamps based on projection system with double ellipsoidal reflector", Proc. SPIE 7717, Optical Modelling and Design, 77170M (14 May 2010); doi: 10.1117/12.853510; https://doi.org/10.1117/12.853510
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