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Method of supplying power to an automobile headlight lamp and headlight using that method

  • US 8,154,208 B2
  • Filed: 02/20/2009
  • Issued: 04/10/2012
  • Est. Priority Date: 02/22/2008
  • Status: Active Grant
First Claim
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1. A power supply method of supplying power to a dual-mode automobile headlight light source able to provide either lighting in a main beam mode or lighting in a dipped beam mode, wherein said method comprises the step of:

  • supplying the light source with electrical power at a first voltage when it is in main beam mode during which said light source emits a main beam of a first intensity;

    supplying said light source with at a second voltage when it is in dipped beam mode during which said light beam emits a second beam of a lower intensity, the second voltage being lower than the first voltage; and

    activating a cap or shutter to cause a cut-off of the second beam, thereby providing a dipped beam from said second beam.

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