Abstract: A projector includes an illumination device adapted to emit an illumination light beam, an image forming device adapted to modulate the illumination light beam emitted from the illumination device to form an image, a projection optical device adapted to project the image formed by the image forming device, and a light guide device adapted to guide the illumination light beam emitted from the illumination device to the image forming device, and defining two directions which are propagation directions of the illumination light beam propagating inside the image forming device, and cross each other as a first direction and a second direction, the image forming device is disposed so that at least a part of the image forming device overlaps at least a part of the illumination device in a third direction perpendicular to each of the first direction and the second direction.

Abstract: An optical apparatus including a light combining optical apparatus that combines color light fluxes modulated by a first and a second light modulators with each other includes an inorganic polarizer disposed on the light exiting side of the first light modulator, a transparent substrate that is in contact with the inorganic polarizer and transmits light, a supporting section that supports the first light modulator and is attached to the light combining optical apparatus, and a clamping section that clamps, along with the supporting section, the inorganic polarizer and the transparent substrate. The clamping section includes a engaging section that engages with the supporting section and an urging section that urges the inorganic polarizer toward the transparent substrate when the engaging section engages with the supporting section, and the supporting section has a receiving section that receives the transparent substrate pressed by the urging section.

Abstract: A projector includes an illumination device adapted to emit an illumination light beam, an image forming device adapted to modulate the illumination light beam emitted from the illumination device to form an image, a projection optical device adapted to project the image formed by the image forming device, and a light guide device adapted to guide the illumination light beam emitted from the illumination device to the image forming device, and defining two directions which are propagation directions of the illumination light beam propagating inside the image forming device, and cross each other as a first direction and a second direction, the image forming device is disposed so that at least a part of the image forming device overlaps at least a part of the illumination device in a third direction perpendicular to each of the first direction and the second direction.

Abstract: A light source which has a housing accommodating a light source lamp and having an exhaust port, a duct, and a fan are provided. The duct has an inlet facing the exhaust port, a branching part which branches air from the inlet, a duct part extending in a first direction orthogonal to an opening plane of the exhaust port, and a duct part extending in a second direction intersecting with the first direction. The fan is arranged in a position for sucking the air circulating through the duct part. The duct part has a plurality of sidewall parts, an opening, and a mesh.

Abstract: An optical apparatus including a light combining optical apparatus that combines color light fluxes modulated by a first and a second light modulators with each other includes an. inorganic polarizer disposed on the light exiting side of the first light modulator, a transparent substrate that is in contact with the inorganic polarizer and transmits light, a supporting section that supports the first light modulator and is attached to the light combining optical apparatus, and a clamping section that clamps, along with the supporting section, the inorganic polarizer and the transparent substrate. The clamping section includes a engaging section that engages with the supporting section and an urging section that urges the inorganic polarizer toward the transparent substrate when the engaging section engages with the supporting section, and the supporting section has a receiving section that receives the transparent substrate pressed by the urging section.

Abstract: A dimmer includes a pair of pivoting sections provided across an optical axis of a light beam and having pivot axes and a pair of light blocking sections held by the pair of pivoting sections and configured to pivot following pivoting of the pivoting sections to block the light beam. In a maximum light blocking state, positions in the optical axis direction of opposed ends on the optical axis side of the pair of light blocking sections are different from each other. In the maximum light blocking state, the opposed ends on the optical axis side of the pair of light blocking sections are arranged to overlap each other in a direction along the optical axis.

Abstract: An advantage of some aspects of the invention is to provide a light source device and a projector which can acquire a type of a light source. A light source device includes a light source which emits light; and light source housing which accommodates the light source therein. The light source housing includes an attaching unit which can attach a conducting member having conductivity to a surface of the light source housing, and the conducting member is attached to the attaching unit according to the type of the light source. Accordingly, it is possible to acquire the type of the light source based on the presence or absence of the conducting member electrically connected to the terminal of a device to which the light source device is attached, independent of the temperature of the light source device.

Abstract: A light source which has a housing accommodating a light source lamp and having an exhaust port, a duct, and a fan are provided. The duct has an inlet facing the exhaust port, a branching part which branches air from the inlet, a duct part extending in a first direction orthogonal to an opening plane of the exhaust port, and a duct part extending in a second direction intersecting with the first direction. The fan is arranged in a position for sucking the air circulating through the duct part. The duct part has a plurality of sidewall parts, an opening, and a mesh.

Abstract: An advantage of some aspects of the invention is to provide a light source device and a projector which can acquire a type of a light source. A light source device includes a light source which emits light; and light source housing which accommodates the light source therein. The light source housing includes an attaching unit which can attach a conducting member having conductivity to a surface of the light source housing, and the conducting member is attached to the attaching unit according to the type of the light source. Accordingly, it is possible to acquire the type of the light source based on the presence or absence of the conducting member electrically connected to the terminal of a device to which the light source device is attached, independent of the temperature of the light source device.

Abstract: A projector includes: an external housing; and an exhaust fan configured to suck an air within the external housing and discharges the sucked air to the outside, the external housing has a top and bottom surface crossing a vertical axis, an air discharge port through that the air discharged from the exhaust fan is discharged to the outside, and a side surface that connects the top surface and the bottom surface, the exhaust fan constituted by a turbo fan that has an impeller rotatable around a predetermined rotation axis, and the rotation axis extends along the vertical axis.

Abstract: A dimmer includes a pair of pivoting sections provided across an optical axis of a light beam and having pivot axes and a pair of light blocking sections held by the pair of pivoting sections and configured to pivot following pivoting of the pivoting sections to block the light beam. In a maximum light blocking state, positions in the optical axis direction of opposed ends on the optical axis side of the pair of light blocking sections are different from each other. In the maximum light blocking state, the opposed ends on the optical axis side of the pair of light blocking sections are arranged to overlap each other in a direction along the optical axis.

Abstract: A light source device includes: a light emitting tube; a reflecting mirror; and a tubular member disposed on a forward side of light emission of the reflecting mirror, and surrounding the light emitting tube, the tubular member has a pair of air circulating units communicating inside and outside of the tubular member and adapted to allow introduction of external air from the forward side toward a backward side of the light emission in a vertically symmetrical manner on a center axis of the light emitting tube, inside the air circulating unit there is disposed a air flow guide member, and the air flow guide member is pivoted rotatably around a predetermined rotational axis with respect to the air circulating unit under own weight of the air flow guide member, and rotates to thereby open and block at least a part of a flow passage inside the air circulating unit.

Abstract: An optical device includes: a plurality of reflection type light modulation devices; a plurality of reflection type polarization plates; a plurality of attachment members; a color combining device; a plurality of adjustment members; engaging projections provided on either the attachment members or the adjustment members and projecting toward the others of the attachment members and the adjustment members; and engaging receivers provided on the others of the attachment members and the adjustment members such that the engaging projections are inserted into the engaging receivers with clearances between the engaging receivers and the engaging projections.

Abstract: A projector includes: an external housing; and an exhaust fan configured to suck an air within the external housing and discharges the sucked air to the outside, the external housing has a top and bottom surface crossing a vertical axis, an air discharge port through that the air discharged from the exhaust fan is discharged to the outside, and a side surface that connects the top surface and the bottom surface, the exhaust fan constituted by a turbo fan that has an impeller rotatable around a predetermined rotation axis, and the rotation axis extends along the vertical axis.

Abstract: A light source device includes: a light emitting tube; a reflecting mirror; and a tubular member disposed on a forward side of light emission of the reflecting mirror, and surrounding the light emitting tube, the tubular member has a pair of air circulating units communicating inside and outside of the tubular member and adapted to allow introduction of external air from the forward side toward a backward side of the light emission in a vertically symmetrical manner on a center axis of the light emitting tube, inside the air circulating unit there is disposed a air flow guide member, and the air flow guide member is pivoted rotatably around a predetermined rotational axis with respect to the air circulating unit under own weight of the air flow guide member, and rotates to thereby open and block at least a part of a flow passage inside the air circulating unit.

Abstract: An optical device includes: a plurality of reflection type light modulation devices; a plurality of reflection type polarization plates; a plurality of attachment members; a color combining device; a plurality of adjustment members; engaging projections provided on either the attachment members or the adjustment members and projecting toward the others of the attachment members and the adjustment members; and engaging receivers provided on the others of the attachment members and the adjustment members such that the engaging projections are inserted into the engaging receivers with clearances between the engaging receivers and the engaging projections.

Abstract: A rear projector, includes: a light source; an optical modulator that forms images through modulation of luminous fluxes coming from the light source based on image information; an image formation device provided with a projection optical device that enlarges and projects the images formed by the optical modulator; a reflective mirror that reflects the luminous fluxes as the images coming from the projection optical device; a screen on which the luminous fluxes are projected after reflected by the reflective mirror; and a box cabinet that accommodates the components of the rear projector.