Patent ID: 7338175

Claim:
A front projection type multi-projection display, comprising: a housing; a light source; a plurality of projector units, disposed in the housing, to modulate and project light from the light source based on image information; an image-capturing device, disposed in the housing, to capture predetermined regions of projection images projected onto a screen; a unit image information generating unit to generate image information to be input to each of the plurality of projector units; a unit image information correcting unit to correct the unit image information based on a result captured by the image-capturing device; and an external light state evaluating unit to evaluate a state of external light by capturing the screen in a state when the light source does not emit or weakly emits, the amount of light emitted from the light source being controlled based on an evaluation result by the external light state evaluating unit; the external light state evaluating unit using a function of evaluating the state of the external light by capturing the screen based on the amount of light which is emitted from the light source, the light from the light source being emitted at least at two emitting levels.