Patent ID: 7004604

Claim:
A projection display device comprising: a white light source; a condensing means for condensing light emitted from the white light source to form a condensed spot on a color wheel including a plurality of color filters having respective colors; a color selection means for selectively passing through light of each color band of the light of the condensed spot, in a predetermined order, by rotating the color wheel; an illumination means for condensing the light which has passed through the color selection means; a shading means having an opening which is disposed at one of an incident side of the color selection means and an output side of the color selection means; a spatial light modulator for modulating the light which has passed through the color selection means, the spatial light modulator displaying black during a period in which light which has passed through the opening has passed through two adjacent color filters and contains two colors; and a projection means for projecting the light modulated by the spatial light modulator onto a screen.