Abstract: A processing device of a projector performs control for correlating user information used by the application software with a projector. The processing device operates in a first mode including performing control for cancelling the correlation between the user information and the projector when the projector is powered off and maintaining the correlation between the user information and the projector when the projector shifts to the standby state.

Abstract: A stand includes a placement table on which a projector that project image light is placed, a leg that supports the placement table, a power supplier that supplies the projector with power for driving the projector, and a first elastic part disposed between the placement table and the projector.

Abstract: An adapter includes a first terminal attachable to and detachable from an electric contact provided at a ceiling and an electric contact provided at a stand, and a second terminal coupled to a projector that projects image light. The second terminal supplies electricity via the first terminal to the projector.

Abstract: A light source device includes an enclosure including a first housing part housing a first cooling target and a second housing part housing a second cooling target, the first cooling target being a terminal radiating heat and detachably housed in the first housing; and a first fan housed in the enclosure and cooling the first cooling target and the second cooling target by supplying an air current sucked from an outside of the enclosure to the first housing part and the second housing part in order. The first housing part is located on an inflow side of the air current with respect to the first fan. The second housing part is located on an outflow side of the air current with respect to the first fan.

Abstract: An illumination device with a projector includes a base, a shade having a side-surface shade surrounding an outer circumferential side of the base, an upper-surface shade disposed above the base, and a lower-surface shade disposed below the base, a projector which is installed on the base, and projects image light toward the side-surface shade, and an illumination unit for illuminating the upper-surface shade and the lower-surface shade from inside the shade. The side-surface shade is provided with a mirror surface part for reflecting light which shines on the side-surface shade from the outside. The mirror surface part is provided with an image light transmission part which the image light enters. The image light transmission part is a semi-transmissive mirror. Therefore, the image light can be projected via the semi-transmissive mirror, but a projection opening of the projector is not seen from the outside.

Abstract: A projection apparatus includes a projection system, a distance measuring sensor that is used to adjust the focal point of the projection system and outputs infrared light in the frontward direction, and an enclosure that houses the projection system and the distance measuring sensor. An exit port of the projection system is disposed at a position which is shifted from the distance measuring sensor in a second direction opposite the first direction. The enclosure has a detection opening via which the infrared light exits. The distance measuring sensor has a detection range over which distance detection is allowed and a non-detection range over which no distance detection is allowed and which is shifted from the detection range toward the distance measurement sensor, and the distance measuring sensor is disposed at a distance from the detection opening, the distance including the non-detection range of the distance measuring sensor.

Abstract: A projector includes a leg portion adjusting an installation angle of an external housing. The leg portion includes a columnar member moving in a first direction, a case member in which the columnar member is accommodated, a fixing member including an engaging portion along the first direction inside the case member and fixing the columnar member, and a switching member moving in a second direction crossing the first direction and switching the fixing member between a state in which the fixing member moves in a direction toward the columnar member to engage therewith and a state in which the fixing member moves in a direction away from the columnar member to release the engagement therewith. The columnar member includes an engaged portion to be engaged with the engaging portion of the fixing member inside the case member, and a base portion moving in the first direction outside the case member.