Patent ID: 7607811
Filing Date: 2009-10-27
Classification: F21S,F21Y

Abstract:
1. A lighting unit for a vehicle comprising: a projection lens disposed on an optical axis extended in a longitudinal direction of the vehicle; a first light source disposed behind a rear focal point of the projection lens; a second light source; a reflector configured to forward reflect a direct light emitted from the first light source close to the optical axis; a cutoff line forming member disposed between the projection lens and the first light source; and a light collecting portion configured to collect a light emitted from the second light source in a vicinity of the rear focal point of the projection lens, wherein a relative position of a tip edge of the cutoff line forming member and the rear focal point is changeable between a first position and a second position, wherein the tip edge is positioned in a vicinity of the rear focal point in the first position, and the tip edge of the cutoff line forming member is apart from the rear focal point in the second position, wherein, in the first position, the cutoff line forming member shields a part of a light reflected by the reflector which passes through a lower part of the rear focal point to form a cutoff line of a light distribution pattern for a low beam, and wherein, in the second position, the light emitted from the second light source is collected in the vicinity of the rear focal point to form a light distribution pattern for a high beam.