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      Optical design of an LED motorcycle headlamp with compound reflectors and a toric lens.

      , , ,
      Applied optics
      Optica Publishing Group

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          Abstract

          An optical design for a new white LED motorcycle headlamp is presented. The motorcycle headlamp designed in this study comprises a white LED module, an elliptical reflector, a parabolic reflector, and a toric lens. The light emitted from the white LED module is located at the first focal point of the elliptical reflector and focuses on the second focal point. The second focal point of the elliptical reflector and the focal point of the parabolic reflector are confocal. We use nonsequential rays to improve the optical efficiency of the compound reflectors. The toric spherical lens allows the device to meet the Economic Commission of Europe, regulation no. 113 (ECE R113). Furthermore, good uniformity is obtained by using aspherical surface optimization of the same toric lens. The reflectivity of the reflector is 95%, and the transmittance of each lens surface is 98%. The average deviation of the high beam is 14.17%, and the optical efficiency is 66.45%.

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          Author and article information

          Journal
          Appl Opt
          Applied optics
          Optica Publishing Group
          1539-4522
          1559-128X
          Oct 01 2015
          : 54
          : 28
          Article
          324460
          10.1364/AO.54.00E102
          26479638
          13bd3f71-07ac-439e-8a81-53bf6655235a

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