Patent ID: 8016424

Claim:
A rear projector comprising: a screen; a display light source that emits a display light; a first optical modulation element that modulates the display light emitted from the display light source; an excitation light source that emits an excitation light; a second optical modulation element that modulates the excitation light emitted from the excitation light source; and a projection unit that projects, onto the screen, the display light being a result of modulation by the first optical modulation element and the excitation light being a result of modulation by the second optical modulation element, wherein the screen includes a scattering plate configured by a chassis with a space therein and with at least one surface being light transmissive, and a scattering element filled in the space of the chassis with a light scattering material dispersed in a scattering medium, and the scattering element of the screen is irradiated with the excitation light being the result of modulation by the second optical modulation element, wherein the excitation light being the result of modulation by the second optical modulation element is irradiated as an exciting light and is of a wavelength not in a visible range, and the excitation light causes the light scattering material to move in the scattering medium.