Light source unit including a laser as a light source and a light emitting wheel with a diffusion layer opposite to the laser

摘要

A projector includes a light source unit, a light guiding device, a display device, a projection side optical system, and a projector control unit. The light source unit includes a light source which emits laser light in the wavelength band of blue, a light emitting wheel disposed on an optical axis of the light source, and a wheel motor for driving to rotate the light emitting wheel. The light emitting wheel is formed of a circular substrate having a diffusion layer on a predetermined surface thereof, the diffusion layer being made up of minute irregularities which are formed directly on a surface of the circular substrate.