Patent ID: 7988305

Claim:
A projection type display device, comprising: a laser light source unit having a light emission region for emitting an elliptical laser light; a focusing lens unit for focusing the laser light emitted from the laser light source unit; a lenticular lens for refracting the laser light focused by the focusing lens unit; a homogenizer having a rectangular incident surface on luminous flux focused by the focusing lens unit; a spatial light modulation element for modulating the laser light emitted from the homogenizer; and a projection lens for projecting the laser light modulated by the spatial light modulation element, wherein: the lenticular lens is rotatable about an axis parallel to an optical axis, the incident surface of the homogenizer has a rectangular shape, and the laser light source unit is arranged such that a longer axis direction of the light emission region and a longer side direction of the incident surface of the homogenizer are substantially parallel.