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Optimization of Cutoff Shields in Projection Headlight Systems to Achieve High Intensity Gradient and Low Color Separation at the Cutoff Line

  • Received : 2015.09.14
  • Accepted : 2015.12.03
  • Published : 2016.02.25

Abstract

The shape and location of the cutoff shield in a projection-type headlight system were optimized by a ray-tracing technique. A shield based on a Petsval surface showed better cutoff characteristics than a flat or cylindrical shield, such as a sharp intensity gradient and less color separation at the cutoff line. Adjustment of the shield’s location between the reflector and the aspheric lens further improved its cutoff characteristics.

Keywords

Projection headlight;Cutoff shield;Color separation;Optical simulation

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Cited by

  1. Improvement of disturbing color effects depending on the axial color of an automotive headlamp lens vol.56, pp.17, 2017, https://doi.org/10.1364/AO.56.005106