An object of the present invention is to provide a headlight module with high light utilization efficiency.
A
Headlight module 160 includes a light source 1 that emits light, and an optical element 301 on which light is incident. The incident light includes a first light, second light and the third light. Optical element, the first reflecting surface 32, the first reflected light by reflecting the first light, the first light exit surface 33 for emitting a first reflected light, the first reflecting surface first the second reflecting surface 36, the second reflected light by reflecting the second light passing through the end portion 321 of the exit surface without being reflected by the first reflecting surface reflects the second reflected light Te a third second emission surface 38 for emitting a third reflecting surface 37 and the third reflected light and the reflected light. The first emission surface projects the light distribution pattern formed on a plane perpendicular to the optical axis including its focus, end forms a cutoff line shape of the light distribution pattern, the first reflected light If a third of the light emitted from the first light exit surface without being reflected by the first reflecting surface, to form a high luminous intensity region by superimposing.
.The 20