A projection optical apparatus includes an optical system and a projection optic enclosure that accommodates the optical system. The optical system includes a first optical system on which the image light is incident, and the projection optic enclosure includes a first accommodation section that accommodates the first optical system and includes a flange section (supported section) supported by the image forming apparatus and a first wall section and a second wall section that face each other in a first direction (Y direction) that intersects the direction along a line that connects the flange section to the center of gravity of the projection optical apparatus.

A first detection unit detects a first gesture in which a hand of a user is moved in a depth direction of a 3D image, and outputs back-of-hand position information indicating the position of a back of the hand in the depth direction to a determination unit. The determination unit determines, on the basis of the back-of-hand position information, a layer, among a plurality of layers of the 3D image, that is located at a position that matches the position of the back in the depth direction to be a selection layer. A second detection unit detects a second gesture using a finger for changing the transmittance of the selection layer. An accepting unit accepts instruction information for changing the transmittance of the selection layer and outputs the instruction information to a display control unit. The display control unit changes, in accordance with the instruction information, the transmittance of the layer that is determined by the determination unit to be the selection layer.

A first detection unit detects a first gesture in which a hand of a user is moved in a depth direction of a 3D image, and outputs back-of-hand position information indicating the position of a back of the hand in the depth direction to a determination unit. The determination unit determines, on the basis of the back-of-hand position information, a layer, among a plurality of layers of the 3D image, that is located at a position that matches the position of the back in the depth direction to be a selection layer. A second detection unit detects a second gesture using a finger for changing the transmittance of the selection layer. An accepting unit accepts instruction information for changing the transmittance of the selection layer and outputs the instruction information to a display control unit. The display control unit changes, in accordance with the instruction information, the transmittance of the layer that is determined by the determination unit to be the selection layer.

A display device for providing user interaction is disclosed. The disclosed display device comprises: a display body; a photographing unit including a camera module for detecting a user's gesture; and a driving unit for selectively moving the photographing unit to a first position where the photographing unit is received in the display body and to a second position or a third position where the photographing unit projects outward from the display body during photographing, wherein the driving unit keeps the photographing unit fixed at a certain point in the section between the second position and the third position.

Disclosed is a display apparatus including a display panel configured to display an image by emitting light, a rear surface structure configured to surround lateral and rear surfaces of the display panel, a vibration generating device connected with the rear surface structure and configured to vibrate the display panel, a rear sound emitting portion between the display panel and the rear surface structure, a rear sound guide between the display panel and the rear surface structure to surround the vibration generating device in a spiral shape and configured to connect with the rear sound emitting portion.

A rollable display device includes: a panel support including a plurality of support bars arranged in a direction and a plurality of flexible coupling portions between support bars of the plurality of support bars and coupling the plurality of support bars together; and a flexible display panel fixed to respective front sides of support bars of the plurality of support bars, and the plurality of support bars includes a first support bar that is spaced apart from an outermost support bar of the plurality of support bars, and the first support bar includes a pair of first holding bars that are spreadable toward an outside from a rear side of the first support bar.

A rollable display device includes: a panel support including a plurality of support bars arranged in a direction and a plurality of flexible coupling portions between support bars of the plurality of support bars and coupling the plurality of support bars together; and a flexible display panel fixed to respective front sides of support bars of the plurality of support bars, and the plurality of support bars includes a first support bar that is spaced apart from an outermost support bar of the plurality of support bars, and the first support bar includes a pair of first holding bars that are spreadable toward an outside from a rear side of the first support bar.

A display includes a display panel, a board mounting portion, and a circuit board arranged at one surface of the board mounting portion. The display panel also includes a cover portion positioned only at a portion of the one surface of the board mounting portion. The portion includes a region in which the circuit board is arranged. The cover portion includes a bottom surface portion and a first side surface portion that extends from the bottom surface portion toward the one surface of the board mounting portion. The first side surface portion includes a first opening portion.

A display includes a display panel, a board mounting portion, and a circuit board arranged at one surface of the board mounting portion. The display panel also includes a cover portion positioned only at a portion of the one surface of the board mounting portion. The portion includes a region in which the circuit board is arranged. The cover portion includes a bottom surface portion and a first side surface portion that extends from the bottom surface portion toward the one surface of the board mounting portion. The first side surface portion includes a first opening portion.

Provided is a head mounted display (HMD) device that lets a user organize added information and thereby makes it possible to improve the ease with which the information can be perceived. A head mounted display device enables a user to visually recognize a virtual image overlaid on a scene. A control unit virtually sets a plurality of display zones, having different depth-direction positions, in front of the user; identifies a display zone being gazed at by the user, on the basis of gaze position information from a gaze position detection unit; drives a focus position adjusting unit so as to align the depth position of the identified display zone with the focus position of a virtual image of the displayed image; acquires, from a cloud server via a communication unit, image information indicating information associated with the identified display zone; and causes a display to display the display image corresponding to the acquired image information.