Abstract: A projector according to the present disclosure includes a projection optical unit section including a projection lens, a speaker section, and a chassis having a first holding part configured to hold the projection optical unit section, and a second holding part which is stacked along a first direction with respect to the first holding part, and is configured to hold the speaker section, wherein light emitted from the projection lens spreads toward a second direction perpendicular to the first direction in a plane including the first direction and an optical axis of the projection lens, and in the light emitted from the projection lens, a divergence angle at an opposite side to the first direction with respect to the second direction is smaller than a divergence angle at the first direction side with respect to the second direction.

Abstract: A projector according to the present disclosure includes a projection optical unit section including a projection lens, a speaker section, and a chassis having a first holding part configured to hold the projection optical unit section, and a second holding part which is stacked along a first direction with respect to the first holding part, and is configured to hold the speaker section, wherein light emitted from the projection lens spreads toward a second direction perpendicular to the first direction in a plane including the first direction and an optical axis of the projection lens, and in the light emitted from the projection lens, a divergence angle at an opposite side to the first direction with respect to the second direction is smaller than a divergence angle at the first direction side with respect to the second direction.

Abstract: A projector includes a light source apparatus, an image formation apparatus that includes a light modulator and forms an image, the light modulator modulating light outputted from the light source apparatus, a projection optical apparatus that projects the image formed by the image formation apparatus, and an attitude adjustment apparatus that causes the light modulator to pivot around a pivotal axis perpendicular to the optical axis of the projection optical apparatus to adjust the attitude of the light modulator.

Abstract: A projection optical device includes a fourth lens group movable along an optical axis, a fifth lens group provided in a position maintained within the projection optical device, a fourth lens frame holding the fourth lens group and having cam pins, a guide tube having a rectilinear groove, the cam pins inserted into the rectilinear groove, and a cam tube rotated with respect to the guide tube to guide the cam pins with the rectilinear groove and the cam groove, and moving the fourth lens frame along the optical axis, wherein the cam pins are formed on an upstream side in an optical path of the fourth lens group in a direction along the optical axis, and the fifth lens group is provided on the upstream side in the optical path of the fourth lens group.

Abstract: A projector includes a light source apparatus, an image formation apparatus that includes a light modulator and forms an image, the light modulator modulating light outputted from the light source apparatus, a projection optical apparatus that projects the image formed by the image formation apparatus, and an attitude adjustment apparatus that causes the light modulator to pivot around a pivotal axis perpendicular to the optical axis of the projection optical apparatus to adjust the attitude of the light modulator.

Abstract: A optical projection device that projects an image with excellent image quality while achieving miniaturization is provided. The optical projection device includes a first lens frame holding a first lens group L1 and including a cam pin, a guide barrel including a straight movement groove, a cam barrel including a cam groove, and an urging portion that urges the first lens frame in a direction intersecting with the direction along an optical axis. The cam pin is formed at a position spaced apart from a center of gravity including the first lens frame and members attached to the first lens frame in the direction along the optical axis Ax and the urging portion urges the first lens frame at a position closer than the cam pin with respect to the center of gravity in the direction along the optical axis.

Abstract: A projection optical system capable of, for example, in application to a projector that performs short-throw projection, facilitating position adjustment of lenses (in particular, focus position adjustment in a manufacturing process) and a projector in which the projection optical system is used. A rotation restricting section is provided that is capable of restricting rotation ranges of a cam in focus position adjustment (position adjustment among lenses) during a manufacturing process according to rotating motions of the cam in a lens-barrel guide cylinder and a position-adjustment cam cylinder.

Abstract: A projector includes a light source device, a light modulating device, a projection optical device, and an adjusting device that rotates the projection optical device about a rotation axis along a direction orthogonal to a central axis of the projection optical device. The adjusting device includes a rotating member that supports the projection optical device and rotates about the rotation axis, a support member that supports the rotating member, and a drive device that rotates the rotating member. The drive device includes a motor and a transmission device that rotates the rotating member with power of the motor. The motor includes a spindle that transmits the power to the transmission device. The spindle is disposed along the rotation axis.

Abstract: A projector includes a light source device, a light modulating device, a projection optical device, and an adjusting device that rotates the projection optical device about a rotation axis along a direction orthogonal to a central axis of the projection optical device. The adjusting device includes a rotating member that supports the projection optical device and rotates about the rotation axis, a support member that supports the rotating member, and a drive device that rotates the rotating member. The drive device includes a motor and a transmission device that rotates the rotating member with power of the motor. The motor includes a spindle that transmits the power to the transmission device. The spindle is disposed along the rotation axis.

Abstract: A projection optical device includes a fourth lens group movable along an optical axis, a fifth lens group provided in a position maintained within the projection optical device, a fourth lens frame holding the fourth lens group and having cam pins, a guide tube having a rectilinear groove, the cam pins inserted into the rectilinear groove, and a cam tube rotated with respect to the guide tube to guide the cam pins with the rectilinear groove and the cam groove, and moving the fourth lens frame along the optical axis, wherein the cam pins are formed on an upstream side in an optical path of the fourth lens group in a direction along the optical axis, and the fifth lens group is provided on the upstream side in the optical path of the fourth lens group.

Abstract: A optical projection device that projects an image with excellent image quality while achieving miniaturization is provided. The optical projection device includes a first lens frame holding a first lens group L1 and including a cam pin, a guide barrel including a straight movement groove, a cam barrel including a cam groove, and an urging portion that urges the first lens frame in a direction intersecting with the direction along an optical axis. The cam pin is formed at a position spaced apart from a center of gravity including the first lens frame and members attached to the first lens frame in the direction along the optical axis Ax and the urging portion urges the first lens frame at a position closer than the cam pin with respect to the center of gravity in the 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: 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.