Abstract: An image projection apparatus includes an image generator configured to use light emitted from a light source to generate an image; a movable member in which the image generator is disposed, the movable member being movably supported; a fixed member being fixed and configured to movably support the movable member; and a mover configured to move the movable member. The mover includes a first pair of actuators facing each other in a first direction across the image generator, and a second pair of actuators facing each other in the second direction across the image generator. The first pair of actuators causes a driving force to operate on the movable member in a direction parallel to a second direction orthogonal to the first direction. The second pair of actuators causes a driving force to operate on the movable member in a direction parallel to the first direction.

Abstract: An illumination optical system is provided that is configured to guide light emitted from a light source to an image generation unit that is arranged to be movable in a direction perpendicular to incoming light and is configured to generate an image by reflecting the incoming light. The illumination optical system includes a first lens that is arranged to be movable in a direction perpendicular to an optical axis of the first lens, a second lens that is arranged to be movable in a direction that changes a face-to-face distance between the first lens and the second lens, and a lens position control unit configured to displace the first lens and the second lens.

Abstract: An image projection apparatus includes a light source, an image generation unit configured to receive light from the light source and generate an image based on the received light, a projection optical system unit configured to project the image generated by the image generation unit, a heat dissipation unit configured to dissipate heat of the image generation unit, and a movable member configured such that a position of the movable member is movable relative to the projection optical system unit, wherein the image generation unit and the heat dissipation unit are mounted on the movable member.

Abstract: An image projection apparatus includes: an exhaust fan configured to discharge air in the apparatus to outside of the apparatus; a light source; and a plurality of ducts each having an air intake port facing the light source, and arranged side by side in a rotation axis direction of the exhaust fan. A duct closer to the exhaust fan in a rotation axis direction of the exhaust fan, has a larger flow path sectional area and has an outflow port from which air flows out, placed closer to the light source, in a direction perpendicular to the rotation axis direction of the exhaust fan.

Abstract: An image projection apparatus includes: a light source; an exhaust fan configured to discharge air in the apparatus to outside of the apparatus; and a plurality of wind guiding walls extending in a direction perpendicular to an exhaust direction of the exhaust fan, and configured to guide air that has cooled the light source. The wind guiding walls are arranged side by side in a rotation axis direction of the exhaust fan. At least a downstream portion of each of the wind guiding walls in an air flowing direction after cooling the light source, is gradually inclined so as to move away from the exhaust fan in the rotation axis direction of the exhaust fan, toward downstream in the air flowing direction.

Abstract: An image projection apparatus includes: a light source; a projection optical unit including a concave mirror and configured to guide a projection image on a projection surface; an air blower configured to generate a flow of air in a main body casing; a power supply circuit board configured to supply power to an electric component in the main body casing; and a light source drive circuit board configured to drive the light source. At least one of the power supply circuit board and the light source drive circuit board is fixed on a facing surface facing a rear side of the concave mirror, of the main body casing.

Abstract: A holding structure holds a reflecting mirror. The holding structure includes a reflecting mirror bracket holding the reflecting mirror; a protrusion disposed on the reflecting mirror; a protrusion supporting part disposed on the reflecting mirror bracket and supporting the protrusion; and a spacer disposed between the protrusion supporting part and the reflecting mirror bracket.

Abstract: A projection lens unit includes a plurality of lenses configured to transmit and emit image light generated by an image generating unit using light from a light source; a barrel configured to hold the plurality of projection lenses; and a heat radiator disposed on the barrel and configured to radiate heat of the barrel to an outside.

Abstract: An image projection apparatus includes an image generator configured to use light emitted from a light source to generate an image; a movable member in which the image generator is disposed, the movable member being movably supported; a fixed member being fixed and configured to movably support the movable member; and a mover configured to move the movable member. The mover includes a first pair of actuators facing each other in a first direction across the image generator, and a second pair of actuators facing each other in the second direction across the image generator. The first pair of actuators causes a driving force to operate on the movable member in a direction parallel to a second direction orthogonal to the first direction. The second pair of actuators causes a driving force to operate on the movable member in a direction parallel to the first direction.

Abstract: Disclosed is a cooling device including a blower including an exhaust port; and a radiator including heat radiation fins, wherein the heat radiation fins include a first heat dissipation area and a second heat dissipation area, wherein a first surface area of the heat radiation fins disposed in the first heat dissipation area is greater than that of the heat radiation fins disposed in the second heat dissipation area, wherein the exhaust port of the air blowing part includes first and second exhaust areas for exhausting cooling air, wherein an amount of the cooling air exhausted from the second exhaust area is greater than that of the first exhaust area, and wherein the first heat dissipation area is disposed in the first exhaust area, and the second heat dissipation area is disposed in the second exhaust area.

Abstract: An illumination optical system is provided that is configured to guide light emitted from a light source to an image generation unit that is arranged to be movable in a direction perpendicular to incoming light and is configured to generate an image by reflecting the incoming light. The illumination optical system includes a first lens that is arranged to be movable in a direction perpendicular to an optical axis of the first lens, a second lens that is arranged to be movable in a direction that changes a face-to-face distance between the first lens and the second lens, and a lens position control unit configured to displace the first lens and the second lens.

Abstract: There is provided a image projection apparatus including an image generation unit for generating an image by using light emitted from a light source, comprising: a movable unit configured to hold the image generation unit and to be able to change a position of the image generation unit; and a drive unit configured to drive the movable unit to move, wherein the movable unit is disposed to move horizontally.

Abstract: An image projection apparatus includes an outer casing having a mounting port, a light source unit detachably disposed in a body of image projection apparatus through the mounting port. The light source unit includes a light source to emit light to be used for projecting an image, a light source housing to retain the light source, and a cover integrated with the light source housing to cover the mounting port.

Abstract: An image projection apparatus that generates an image based on image data and projects the image, comprises: an image generation element that uses light emitted from a light source to generate an image; a holding unit that rotatably holds the image generation element; and an illumination optical unit that includes one or more optical systems and a light tunnel that is a tubular member surrounding part of a light path from the light source to the image generation element and reflects the light by an inner surface thereof, and that projects the light passing through the light tunnel toward an entire area of a rotatable range of the image generation element.

Abstract: An image projection device includes: an image generating unit that includes an optical modulation element generating an image using light emitted from a light source; an illumination optical unit that includes one or more optical elements guiding the light emitted from the light source to the image generating unit; a projecting unit that projects the image generated by the image generating unit; a first control unit that performs control to move the image generating unit movable with respect to the illumination optical unit; and a second control unit that performs control to move an illumination area indicating an area illuminated with the light guided to the image generating unit by the illumination optical unit according to a movement amount of the image generating unit.

Abstract: Disclosed is a cooling device including a blower including an exhaust port; and a radiator including heat radiation fins, wherein the heat radiation fins include a first heat dissipation area and a second heat dissipation area, wherein a first surface area of the heat radiation fins disposed in the first heat dissipation area is greater than that of the heat radiation fins disposed in the second heat dissipation area, wherein the exhaust port of the air blowing part includes first and second exhaust areas for exhausting cooling air, wherein an amount of the cooling air exhausted from the second exhaust area is greater than that of the first exhaust area, and wherein the first heat dissipation area is disposed in the first exhaust area, and the second heat dissipation area is disposed in the second exhaust area.