Image projection apparatus

An image projection apparatus comprising:

• a light source apparatus which emits illumination light;
• a digital micromirror device which modulates illumination light on an image display surface according to an image signal;
• a projection optical system which projects, while enlarging, an image with modulated light;
• and
• a corrector which,
• let a first wavelength and a second wavelength of wavelengths of light included in the illumination light be denoted by λ1 and λ2, respectively, the first and second wavelengths λ1 and λ2 belonging to wavelength bands of colors different from each other,
• let a mirror surface forming each pixel on the image display surface be referred to as a pixel surface,
• let reflected light produced as a result of a light ray along an illumination optical axis being mirror-reflected on the pixel surface be referred to as mirror-reflected light,
• let, in a comparison in traveling direction between, of diffracted light produced as a result of light rays with the wavelengths λ1 and λ2 along the illumination optical axis being diffracted on the digital micromirror device in an on state, diffracted light with the wavelength λ1 that travels in a direction closest to a traveling direction of the mirror-reflected light and diffracted light with the wavelength λ2 that travels in a direction closest to the traveling direction of the mirror-reflected light, the diffracted light with the wavelength λ1 be diffracted to a position farther away from the mirror-reflected light than the diffracted light with the wavelength λ2,
• corrects angle distribution of the illumination light such that the angle distribution of the illumination light includes at least an angle distribution that fulfills conditional formula (1) below:
• Fλ2<Fλ1 (1)
• where Fλ1 represents an F-number of illumination light with the first wavelength λ1;
• and Fλ2 represents an F-number of illumination light with the second wavelength λ2.