Headlight module and headlight device

A headlight module for a vehicle for forming a light distribution pattern and projecting the light distribution pattern, the headlight module comprising:

• a light source for emitting light;
• and
• an optical element including a first reflecting surface for reflecting the light as first reflected light, a second reflecting surface for reflecting, as second reflected light, light passing through a traveling direction side of an edge portion of the first reflecting surface, a third reflecting surface for reflecting the second reflected light as third reflected light, and a first emitting surface, the traveling direction side being a side toward which the first reflected light travels, wherein
• the edge portion is an edge portion on the traveling direction side;
• the first emitting surface emits the first reflected light and the third reflected light;
• a direction in which a front surface of the first reflecting surface faces is a first direction, and a direction in which a back surface of the first reflecting surface faces is a second direction;
• the second reflecting surface is located on the first emitting surface side of the edge portion and located in the second direction from the first reflecting surface;
• the third reflecting surface is located in the first direction from an optical axis of the first emitting surface, located on the first emitting surface side of the first reflecting surface, and located on the first emitting surface side of the second reflecting surface;
• the first reflecting surface forms a high luminous intensity region of the light distribution pattern by superposing the first reflected light and light that has not been reflected by the first reflecting surface, and forms a cutoff line of the light distribution pattern;
• and
• the edge portion forms a shape of the cutoff line of the light distribution pattern.