Patent ID: 8016425

Claim:
A projector, comprising: a light source which emits light containing visible light and infrared light; a light time division unit which divides light emitted from the light source into one or more visible lights having different wavelength ranges and one or more infrared lights having different wavelength ranges in a time-division manner; a plurality of light modulation elements, which time-sequentially modulate the plural lights separated by the light time division unit and having different wavelength ranges; and a projection unit which projects and displays the light modulated by the light modulation elements on a projection-receiving surface, wherein a plurality of images containing a visible image produced by the one or more visible lights and an infrared image produced by the one or more infrared lights are displayed on a same projection receiving surface, one of the light modulation elements is an infrared light modulation element, which modulates the infrared light; a remaining light modulation element is a visible light modulation element, which modulates the visible light; and both the visible light modulation element and the infrared light modulation element have the same image display range size and resolution.