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VEHICULAR HEADLAMP UNIT

  • US 20090103323A1
  • Filed: 10/09/2008
  • Published: 04/23/2009
  • Est. Priority Date: 10/17/2007
  • Status: Active Grant
First Claim
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1. A vehicular headlamp unit using a light-emitting element as a light source comprising:

  • a projection lens arranged on an optical axis that extends in a vehicle longitudinal direction, and first and second light source units arranged rearward of the projection lens,wherein the first light source unit comprises;

    a first light-emitting element arranged in a vicinity of the optical axis further rearward than a rear-side focal point of the projection lens,a first reflector arranged so as to cover the first light-emitting element from above and structured so as to reflect light from the first light-emitting element forward toward the optical axis, anda first mirror component having an upward-facing reflective surface that extends rearward generally along the optical axis from a vicinity of the rear-side focal point so as to reflect a portion of the reflected light from the first reflector upward, andwherein the second light source unit comprises;

    a second mirror component comprising a downward-facing reflective surface that extends diagonally downward toward a lamp rear side from a front end edge of the upward-facing reflective surface,a second light-emitting element arranged on the second mirror component facing forward and diagonally downward below the optical axis,a second reflector structured so as to reflect light from the second light-emitting element upward and generally converge such light at a region in a vicinity of the rear-side focal point on the downward-facing reflective surface, anda third reflector arranged downward of the second light-emitting element which reflects light from the second light-emitting element forward so that such light passes through a lower space of the projection lens.

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