A modular television with removable peripheral hardware components for simple service and repair thereof.

A rollable display apparatus includes a flexible display panel, a panel extension sheet connected to the flexible display panel, and a housing module. The flexible display panel is configured to be loaded into and unloaded from the housing module. The rollable display apparatus further includes a roller part in the housing module that has a double roller structure. The roller part is configured to individually wind and unwind each of the panel extension sheet and the flexible display panel.

A rollable display apparatus includes a flexible display panel, a panel extension sheet connected to the flexible display panel, and a housing module. The flexible display panel is configured to be loaded into and unloaded from the housing module. The rollable display apparatus further includes a roller part in the housing module that has a double roller structure. The roller part is configured to individually wind and unwind each of the panel extension sheet and the flexible display panel.

[Object] To provide a hinge mechanism that allows a head-mounted display to be made more compact, and a head-mounted display including this hinge mechanism.

[Solving Means] A hinge mechanism includes: a shaft portion; and a cable passing portion. The shaft portion supports a housing portion and a temple portion of the head-mounted display in such a way that the temple portion is capable of rotating about one axis between a closed position and an open position relative to the housing portion. The cable passing portion is adjacent to the shaft portion in a direction of the one axis, and allows a cable to pass therethrough in a direction orthogonal to the one axis.

A virtual image display device includes a projection optical system that includes a projection mirror that projects an image display light toward a concavely curved surface of a virtual image presentation plate. The projection mirror has a convexly curved surface on which the image display light is incident and reflected diagonally and is arranged such that a direction orthogonal to both a direction of incidence and a direction of reflection of the image display light on the concavely curved surface and a direction orthogonal to both a direction of incidence and a direction of reflection of the image display light on the convexly curved surface are parallel to each other. The display unit is provided at a focal point of a composite optical system within a meridional plane, the composite optical system being formed by the virtual image presentation plate and the projection optical system.

A virtual image display device includes: a display unit that generates an image display light; and a projection optical system that projects the image display light L toward the virtual image presentation plate. The projection optical system includes a projection mirror that projects the image display light toward the virtual image presentation plate and an optical device of transmission type provided such that a light axis intersects at an angle to a light path of the projection optical system. The display unit is provided at a focal point of a composite optical system within a meridional plane, the composite optical system being formed by the virtual image presentation plate and the projection optical system.

A virtual image display device includes a projection optical system that projects an image display light toward a virtual image presentation plate. The projection optical system includes a first concave mirror that reflects the image display light toward the virtual image presentation plate and a second concave mirror that reflects the image display light toward the first concave mirror. Defining a reference plane along both a direction of incidence and a direction of output of the image display light on the virtual image presentation, the first concave mirror is oriented such that the image display light is incident on the first concave mirror in a direction along the reference plane, and the second concave mirror is oriented such that the image display light is incident on the second concave mirror in a direction intersecting the reference plane.

[Object] To provide a display apparatus capable of obtaining excellent heat radiation performance of a light source while ensuring positional accuracy of the light source. [Solving Means] A display apparatus according to an embodiment of the present technology includes a light guide portion, a casing, a projection portion, a heat source, and a heat-transfer member. The light guide portion is disposed in front of eyes of a user. The casing is fixed to the light guide portion. The projection portion is housed in the casing and is configured to be capable of projecting an image to the light guide portion. The heat-transfer member includes a first end and a second end, the first end being connected to the heat source, the second end being connected to an inner surface of the casing, and is configured to be deformable.

A display device includes a display screen, a reflective sheet disposed opposite the display screen and that reflects irradiated light toward the display screen, a plurality of light emitters disposed at one side of the reflective sheet and that irradiates light to different reflective regions of the reflective sheet, and a controller that adjusts an amount of light generated in each of the plurality of light emitters.

A display device includes a display screen, a reflective sheet disposed opposite the display screen and that reflects irradiated light toward the display screen, a plurality of light emitters disposed at one side of the reflective sheet and that irradiates light to different reflective regions of the reflective sheet, and a controller that adjusts an amount of light generated in each of the plurality of light emitters.