A vehicle headlamp is constituted to have a plurality of lamp units having light-emitting
diodes as light sources. At that time, three types of lamp units of different radiation
modes; that is, a projector-type lamp unit, direct-projection-type lamp units,
and a reflection-type lamp unit, are used as the plurality of lamp units. As a
result, a low-beam light distribution pattern obtained as a merged light distribution
pattern formed from the light rays output from these three types of lamp units
can be readily formed in a desired pattern geometry and a desired distribution
of luminous intensity.
