Image display system image projection apparatus, and image projection screen

摘要

A kind of image projection apparatus is disclosed, there is the first light source and second light source and output black light of output visible light, visible and black light to screen. The screen includes a kind of material, changes irradiation visible light and black light when wherein at least one reflectivity, transmitance and absorptivity. The visible light and black light that the image projection apparatus further includes modulation unit modulate intensity are according to picture signal, and the control unit of control modulation portion.