LASER LIGHT SOURCE DEVICE AND IMAGE PROJECTION DEVICE

摘要

An image projection device equipped with one or more laser light source devices (2), wherein the light emitted by the laser light source devices (2) is used as the projection light. The laser light source devices (2) are equipped with a plurality of light source units (3) for emitting laser beams. The plurality of light source units (3) are divided into a plurality of laser light source groups (6) according to the size of the angle of incidence of the optical axis of the laser beam on an incident surface (51). As the angle of incidence of a laser beam in the laser light source groups increases, the average value of the focusing angle or radiation angle of the laser beams when incident on the incident surface in said laser light source groups decreases.