Patent ID: 7878663

Claim:
An image display apparatus, comprising: a light modulation element; an illumination optical system which includes at least one light source unit including a plurality of light emitting units two-dimensionally arranged and illuminates the light modulation element; and a projection optical system for enlarging and projecting an image of the light modulation element on a projection surface, wherein: an image of the plurality of light emitting units is formed at a position corresponding to a stop of the projection optical system; the stop has an aperture shape of rotational asymmetry or of two-fold symmetry; and illuminance intensity of each of the plurality of light emitting units can be independently controlled; and wherein the following conditional expression is satisfied, d 1/ d 2×0.8< D 1/ D 2< d 1/ d 2×1.2, where D 1 and D 2 represent widths of the light emitting area in a first direction and in a second direction, respectively, and d 1 and d 2 represent widths of an aperture of the stop in the first direction and in the second direction, respectively.