Image projection apparatus
First Claim
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1. An image projection apparatus comprising:
- a light modulation element; and
a pixel shift unit configured to shift an optical path of light from a pixel in the light modulation element and to shift a position on a projection surface of a projection pixel formed on the projection surface by a projection optical system with the light,wherein the pixel shift unit includes;
an optical element configured to shift the optical path in one direction among directions orthogonal to an optical axis from the light modulation element to the projection optical system; and
a rotating unit configured to rotate the optical element around an axis that is parallel to an optical axis direction, so as to change a shift direction of the optical path by the optical element.
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Abstract
An image projection apparatus includes a light modulation element, and a pixel shift unit configured to shift an optical path of light from a pixel in the light modulation element and to shift a position on a projection surface of a projection pixel formed on the projection surface by a projection optical system with the light. The pixel shift unit includes an optical element configured to shift the optical path in one direction among directions orthogonal to an optical axis from the light modulation element to the projection optical system, and a rotating unit configured to change the one direction by rotating the optical element around the optical axis.
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Citations
16 Claims
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1. An image projection apparatus comprising:
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a light modulation element; and a pixel shift unit configured to shift an optical path of light from a pixel in the light modulation element and to shift a position on a projection surface of a projection pixel formed on the projection surface by a projection optical system with the light, wherein the pixel shift unit includes; an optical element configured to shift the optical path in one direction among directions orthogonal to an optical axis from the light modulation element to the projection optical system; and a rotating unit configured to rotate the optical element around an axis that is parallel to an optical axis direction, so as to change a shift direction of the optical path by the optical element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image projection apparatus comprising:
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a light modulation element; and a pixel shifter configured to shift an optical path of light from a pixel in the light modulation element and to shift a position on a projection surface of a projection pixel formed on the projection surface by a projection optical system with the light, wherein the pixel shifter includes; an optical element configured to shift the optical path in one direction among directions orthogonal to an optical axis from the light modulation element to the projection optical system; and a holder configured to hold the optical element and a motor configured to rotate the holder to thereby rotate the optical element around an axis that is parallel to an optical axis direction, so as to change a shift direction of the optical path by the optical element. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification