Sony Group Corporation
LIGHT SOURCE DEVICE AND IMAGE DISPLAY DEVICE

Abstract:

A light source device and an image display device that combine light with high efficiency are provided. The light source device includes a first light source unit, a first illumination optical system that emits a first illumination light, a second light source unit, a second illumination optical system that emits a second illumination light, and a combiner on which the first illumination light and the second illumination light are incident. The combiner filters the incident light on the basis of a wavelength range and an incident angle, and angles at which the first illumination light and the second illumination light are incident on the combiner are each adjusted in such a way that the wavelength range of the first illumination light emitted from the combiner and the wavelength range of the second illumination light emitted from the combiner approach or overlap with each other.