Image display system image projection apparatus, and image projection screen

摘要

And a second light source for outputting a non-visible light and the first light source for outputting visible light, visible light and image projection apparatus of the present invention is projected onto the screen invisible light. Reflectance of visible light, transmission and at least one of absorption by the invisible light is projected, but the screen has a material that changes. Visible light and image projection apparatus includes a modulator for modulating on the basis of the image signal intensities of invisible light, and a control unit for controlling the modulation unit.