Abstract: A projection optical apparatus includes a first housing, a second housing accommodated in the first housing, and a projection system accommodated in the second housing. The projection system includes a first reflector deflecting the optical path of the projection system. The first housing has a plurality of first openings that cause the interior of the first housing to communicate with the exterior of the first housing. The second housing has a plurality of second openings that cause the interior of the second housing to communicate with the exterior of the second housing.

Abstract: A mounting member mounts an imaging apparatus on a projection optical apparatus that projects image light. The mounting member includes a first plate part to which the imaging apparatus is fixed, the first plate part having a shape of a planar plate, and a second plate part having a shape of a planar plate and extending from the first plate part, the second plate part being fixed to the projection optical apparatus. The first plate part has a first surface and a second surface opposite from the first surface. The second plate part is disposed on the side facing the second surface. The first surface is a placement surface where the imaging apparatus is placed.

Abstract: A projection optical apparatus includes a projection system including a first reflector and a lens barrel accommodating the projection system. The lens barrel includes a frame including a flange and accommodating the projection system and a holder holding the first reflector. The holder has a holding surface holding the first reflector and an extension part extending from the holding surface in a direction that intersects the holding surface, the extension part being fitted to the flange. The holder differs from the frame in terms of material.

Abstract: A projection optical apparatus includes a first housing, a second housing accommodated in the first housing, and a projection system accommodated in the second housing. The projection system includes a first reflector deflecting the optical path of the projection system. The first housing has a plurality of first openings that cause the interior of the first housing to communicate with the exterior of the first housing. The second housing has a plurality of second openings that cause the interior of the second housing to communicate with the exterior of the second housing.

Abstract: An electro-optical device includes a cable connected to an electronic component, a storage casing that stores the electronic component and an optical component and has an insertion hole through which the cable is inserted, a fixing portion that is fixed to the storage casing, and an elastic portion that is fixed to the fixing portion. The fixing portion has a first opposing portion and a second opposing portion that are disposed opposite to each other with the cable that protrudes from the insertion hole, interposed therebetween, and the elastic portion includes a first protruding portion and a second protruding portion, and the first protruding portion and the second protruding portion are pressed against each other with the cable interposed therebetween and are disposed so as to surround a vicinity of the cable.

Abstract: An electro-optical device includes a cable connected to an electronic component, a storage casing that stores the electronic component and an optical component and has an insertion hole through which the cable is inserted, a fixing portion that is fixed to the storage casing, and an elastic portion that is fixed to the fixing portion. The fixing portion has a first opposing portion and a second opposing portion that are disposed opposite to each other with the cable that protrudes from the insertion hole, interposed therebetween, and the elastic portion includes a first protruding portion and a second protruding portion, and the first protruding portion and the second protruding portion are pressed against each other with the cable interposed therebetween and are disposed so as to surround a vicinity of the cable.

Abstract: A light source device includes: a first light source section and a second light source section configured to emit light along two different directions; a light combining member configured to combine the light emitted from the first light source section with the light emitted from the second light source section; a light source casing to which the first light source section and the second light source section are attached outside; and a holding member configured to hold the light combining member, the holding member accommodated inside the light source casing. The holding member is fixed inside the light source casing.

Abstract: An optical apparatus includes: an optical element; a holding member which holds the optical element; and a housing to which the holding member is attached, in which the holding member includes an operating section which receives an operation for adjusting a position of the holding member, and a fixed portion fixed to the housing, and in which the operating section and the fixed portion are respectively positioned on one end side and on the other end side in a direction which intersects with an optical axis of the optical element held by the holding member.

Abstract: An optical path changing device includes: a reflective member that reflects a light beam incident thereto, in a predetermined reflection direction; and a housing holding the reflective member. The housing has a first surface and a second surface with the reflective member interposed therebetween in a direction orthogonal to the reflection direction. The first surface and the second surface have openings, respectively, and a cooling gas is circulated from the opening in the first surface to the opening in the second surface.

Abstract: A lighting device includes a plurality of light source devices and a holding member (first lamp unit and second lamp unit) holding the plurality of light source devices. The light source device has a light source and a storing body for storing the light source. The storing body has a plurality of openings introducing cooling gas and the holding member (first lamp unit and second lamp unit) includes a diverging device guiding the cooling gas to at least one opening among the plurality of openings.

Abstract: A light control unit includes: a first light-shielding fin and a second light-shielding fin arranged to have a center axis of light passing therethrough interposed therebetween, and a moving device configured to move the first light-shielding fin and the second light-shielding fin so that respective end portions of the first light-shielding fin and the second light-shielding fin move in directions toward and away from each other, and the first light-shielding fin and the second light-shielding fin include: an arm moved by the moving device, and a light-shielding portion provided on the arm and configured to move with the arm to be arranged in a passage area of the light, and at least one of the first light-shielding fin and the second light-shielding fin includes an adjusting portion configured to adjust a mounting position between the arm and the light-shielding portion, the arm and the light-shielding portion being separate members.

Abstract: A light source device unit includes a light source device including a light source and an outflow port constituting part having a plurality of first outflow ports for making a cooling air flow out, a flow channel constituting part including an inlet port constituting part having a plurality of first inlet ports communicated with the first outflow ports and adapted to introduce the cooling air, and an opening and closing part adapted to selectively open and close the first inlet ports, the first inlet ports are arranged in a periphery of a central axis (a stationary shaft), and the opening and closing part includes a rotary member rotates around the stationary shaft in accordance with a posture of the light source device to thereby selectively open and close the first inlet ports.

Abstract: An illumination device includes: a first light source device and a second light source device that emit light in directions opposite to each other in a first direction; a reflective portion that is disposed between the first light source device and the second light source device, and reflects the light emitted from the first light source device and the second light source device in a second direction crossing the first direction; and a cooling device that is disposed on one side of the reflective portion in a direction crossing the first direction and the second direction, and blows cooling air to the first light source device and the second light source device.

Abstract: A lighting device includes a supporting section configured to support a light source device unit, a fan housing section in which an outflow port for causing the air discharged by a cooling fan to flow out is formed, and a circulating device supported by the light source device unit. The outflow port is opened in a direction along a second direction. The light source device unit includes an inflow port opened to a side opposed to the outflow port and a channel for leading the air flowing in from the inflow port to a light source. The circulating device includes a moving section disposed between the light source device unit and the fan housing section in a predetermined position, a ventilation hole for causing the outflow port and the inflow port to communicate being formed in the moving section, and an urging section configured to urge the moving section.

Abstract: An illumination device includes a light source device, an attachment member to which the light source device is attached, and a first fixture inserted into the light source device to fix the light source device to the attachment member. The light source device includes a light source and a housing configured to house the light source on the inside. The housing includes a first housing and a second housing combined with each other to house the light source on the inside, and a second fixture inserted into the first housing and the second housing to fix the first housing and the second housing in a combined state. A removing direction of the first fixture and a removing direction of the second fixture with respect to the light source device are different.

Abstract: A lighting device includes a supporting section configured to support a light source device unit, a fan housing section in which an outflow port for causing the air discharged by a cooling fan to flow out is formed, and a circulating device supported by the light source device unit. The outflow port is opened in a direction along a second direction. The light source device unit includes an inflow port opened to a side opposed to the outflow port and a channel for leading the air flowing in from the inflow port to a light source. The circulating device includes a moving section disposed between the light source device unit and the fan housing section in a predetermined position, a ventilation hole for causing the outflow port and the inflow port to communicate being formed in the moving section, and an urging section configured to urge the moving section.

Abstract: A light source device includes a light emitting tube including a light emitting part, a reflector adapted to reflect light emitted from the light emitting tube, a housing body adapted to house the light emitting tube and the reflector, and a plurality of inlet ports adapted to guide a cooling gas to the light emitting tube from respective directions different from each other.

Abstract: An illumination device includes: a first light source device and a second light source device that emit light in directions opposite to each other in a first direction; a reflective portion that is disposed between the first light source device and the second light source device, and reflects the light emitted from the first light source device and the second light source device in a second direction crossing the first direction; and a cooling device that is disposed on one side of the reflective portion in a direction crossing the first direction and the second direction, and blows cooling air to the first light source device and the second light source device.

Abstract: A light source device, which is incorporated into a projector and is used, includes a light source, and a light source case, in which the light source case includes fuses that are fused in a case where the light source device is in a predetermined use state, and a light source detection portion that detects whether or not the light source device is installed at a predetermined position in the projector. A projector includes a light source cartridge that is provided with a cartridge case accommodating two light source devices and corresponding to an installation posture of a projector main body, in which the cartridge case includes a cartridge detection portion that detects the corresponding installation posture.