Abstract: A light modulation includes a light modulator, a first polarizer wherein light outputted from the light modulator is incident, and a second polarizer wherein light outputted from the first polarizer is incident. The first polarizer includes a first base having a first and second surface, a first light absorbing layer to face the first base, and a first inorganic polarization layer on the first surface, disposed between the first base and first light layer. The second polarizer includes a second base having a third and fourth surface, a second light absorbing layer to face the second base, and a second inorganic polarization layer on the third surface, disposed between the second base and second light layer. The first polarizer is disposed the first light layer faces a light exiting surface. The second polarizer is disposed the fourth surface of the second base faces the second surface of the first base.

Abstract: A light modulation includes a light modulator, a first polarizer wherein light outputted from the light modulator is incident, and a second polarizer wherein light outputted from the first polarizer is incident. The first polarizer includes a first base having a first and second surface, a first light absorbing layer to face the first base, and a first inorganic polarization layer on the first surface, disposed between the first base and first light layer. The second polarizer includes a second base having a third and fourth surface, a second light absorbing layer to face the second base, and a second inorganic polarization layer on the third surface, disposed between the second base and second light layer. The first polarizer is disposed the first light layer faces a light exiting surface. The second polarizer is disposed the fourth surface of the second base faces the second surface of the first base.

Abstract: A projector includes: an illumination device; first color separation device that separates first and second color light from light emitted from the illumination device; second color separation device that separates third and fourth color light from the second color light; plurality of light modulation devices that modulate the lights separated by the first and second devices; projection optical device that projects an image based on the modulated lights; first and second filters provided on optical paths of the third and fourth color lights, respectively. A wavelength of the third color light is shorter than that of the fourth. The first filter attenuates light at a wavelength exceeding a first threshold set in a dimming wavelength region between a wavelength region of the third and fourth color lights. The second filter attenuates light at a wavelength equal to or less than a second threshold set in the dimming wavelength region.

Abstract: A projector includes: an illumination device; first color separation device that separates first and second color light from light emitted from the illumination device; second color separation device that separates third and fourth color light from the second color light; plurality of light modulation devices that modulate the lights separated by the first and second devices; projection optical device that projects an image based on the modulated lights; first and second filters provided on optical paths of the third and fourth color lights, respectively. A wavelength of the third color light is shorter than that of the fourth. The first filter attenuates light at a wavelength exceeding a first threshold set in a dimming wavelength region between a wavelength region of the third and fourth color lights. The second filter attenuates light at a wavelength equal to or less than a second threshold set in the dimming wavelength region.

Abstract: A projector includes: an illuminator that outputs illumination light; a light modulator including a liquid crystal panel and a structural birefringent polarization separation element having a polarization separation surface inclined away from a central axis of the illumination light, the light modulator modulating the illumination light from the illuminator; and a projection system that projects the light modulated by the light modulator, wherein the illumination light outputted from the illuminator has an angular distribution in a first direction, which is perpendicular to the central axis of the illumination light, smaller than the angular distribution in a second direction, which is perpendicular to the first direction and the central axis of the illumination light, and the polarization separation surface of the structural birefringent polarization separation element has a structure that is not periodic along the first direction but is periodic along the second direction.

Abstract: A projector includes a light source device which emits an illumination light; an aperture disposed with a tilt with respect to a plane perpendicular to a center axis of the illumination light, provided with an opening section which transmits a part of the illumination light, and block a rest of the illumination light; a pair of first and second lens arrays which divides the illumination light from the light source device into a plurality of partial light; and an overlapping lens which overlaps the illumination light transmitted through the first and second lens arrays, wherein the aperture is disposed on a light path between the light source device and the overlapping lens.

Abstract: A projector includes: a light source device which emits an illumination light; an aperture disposed with a tilt with respect to a plane perpendicular to a center axis of the illumination light, provided with an opening section which transmits a part of the illumination light, and block a rest of the illumination light; a pair of first and second lens arrays which divides the illumination light from the light source device into a plurality of partial light; and an overlapping lens which overlaps the illumination light transmitted through the first and second lens arrays, wherein the aperture is disposed on a light path between the light source device and the overlapping lens.

Abstract: A projector includes: an illuminator that outputs illumination light; a light modulator including a liquid crystal panel and a structural birefringent polarization separation element having a polarization separation surface inclined away from a central axis of the illumination light, the light modulator modulating the illumination light from the illuminator; and a projection system that projects the light modulated by the light modulator, wherein the illumination light outputted from the illuminator has an angular distribution in a first direction, which is perpendicular to the central axis of the illumination light, smaller than the angular distribution in a second direction, which is perpendicular to the first direction and the central axis of the illumination light, and the polarization separation surface of the structural birefringent polarization separation element has a structure that is not periodic along the first direction but is periodic along the second direction.

Abstract: A projector includes: a light modulation device that changes the polarization state of incident light; and a polarization maintaining reflector provided along the outer edge of an effective pixel area in the light modulation device, the polarization maintaining reflector having a flat surface that reflects the incident light with its polarization state maintained.