An optical device includes a light guide plate configured to guide light within a plane parallel to an emission surface, and a plurality of light focusing portions to which the light guide plate guides directional light. Each of the plurality of light focusing portions is provided with an optical surface configured to create from the directional light incident thereon emission light in a direction substantially converging on a single convergence point or convergence line in a space or to create emission light that substantially diverges from a single convergence point of convergence line in a space and exits from the emission surface. The plurality of light focusing portions are provided near the emission surface of the light guide plate, and each of the plurality of light focusing portions is formed along a predetermined line within a plane parallel to the emission surface.

A head-up display system includes a first projection module that projects a first image to display the first image in a forward direction not directly facing a user, a second projection module that projects a second image to display the second image in a forward direction directly facing the user, and a reflective optical element that reflects at least a part of the first image and at least a part of the second image.

A head-up display and a movable body can display a virtual image viewable at a position nearer a user. The head-up display includes a display device that displays a first image and emits image light from the first image in a first direction, a first optical member located in the first direction from the display device, and a second optical member located between the display device and the first optical member in the first direction. The second optical member reflects the first image in a first plane direction and a second plane direction and displays a virtual image of the first image in a space between the first optical member and a user.

A three-dimensional display device includes a display panel, an optical panel, and a controller. The display panel displays a parallax image. The optical panel defines a traveling direction of image light. The controller controls the parallax image based on positions of a first eye and a second eye of a user. The controller causes a predetermined proportion of pixels to display a black image. The predetermined proportion is determined to cause, for the first and second eyes of the user at a predetermined reference position, a black image to be displayed by a pixel at one end or two ends of multiple first areas viewable to the first eye and not viewable to the second eye and by a pixel at one end or two ends of multiple second areas viewable to the second eye and not viewable to the first eye in a parallax direction.

An image display apparatus including one or more virtual-image screens, a display section, and a display control unit. The one or more virtual-image screens are arranged to cover at least a part of a periphery of a predetermined axis, display a virtual image of a projected image by using the predetermined axis as a basis, and are transparent. The display section has one or more display surfaces that display a plurality of viewpoint images in mutually different directions and project the plurality of displayed viewpoint images onto the one or more virtual-image screens, respectively, the plurality of viewpoint images being images of a display target as viewed from mutually different directions. The display control unit displays, a virtual image of the display target that is visible from a second direction extending toward the predetermined axis from the observation point.

According to one embodiment, an image processing device includes an acquisition unit which obtains a target image, a generation unit which generates a three-dimensional image by reordering a plurality of video signals corresponding to the obtained target image such that each of the video signals is written to one of a plurality of pixels arranged in a horizontal direction while skipping a predetermined number of pixels, and an output unit which outputs the generated three-dimensional image to a display device.

A three-dimensional display device includes a display panel, a controller, and a communication unit. The display panel is configured to display an image. An optical element is configured to define a propagation direction of image light emitted from the display panel. The communication unit is configured to receive a captured image of first eye and second eye different from the first eye, of a user. The controller causes the display panel to display a calibration image. The controller is configured so that, based on cornea images of different parts of the calibration image in the captured image that are viewed with the first eye and the second eye of the user, respectively, a parallax image is displayed on the display panel.

A drive system for a projection screen in a swept surface volumetric 3D display is disclosed. The drive system causes the projection screen to reciprocate through an excursion distance at a screen reciprocating frequency relative to a projection system. The drive system includes an actuator arrangement for generating an input reciprocating force substantially at the screen reciprocating frequency through an input excursion distance and a support structure for the projection screen. The support structure includes a resonant mounting arrangement for the projection screen. The resonant mounting arrangement is operably connected to the actuator arrangement and configured to allow the projection screen to reciprocate through the excursion distance. The resonant mounting arrangement is configured to have a resonant frequency substantially equivalent to the screen reciprocating frequency on actuation of the actuator arrangement. A gaming console incorporating a swept surface volumetric 3D display based on the drive system is also disclosed.

An interocular distance measurement method is implementable by a three-dimensional display device including a display, a barrier, a detector, and a controller. The display displays a parallax image. The barrier provides parallax between eyes of a user. The detector detects a position of a face of the user. The method includes displaying an image, detecting a first position, detecting a second position, and calculating an interocular distance. The displaying an image includes displaying an image for interocular distance measurement. The detecting a first position includes detecting a first position of the face of the user in response to an instruction from the user. The detecting a second position includes detecting a second position of the face of the user in response to an instruction from the user. The calculating an interocular distance includes calculating an interocular distance of the user based on the first and the second positions.

A stereo display device includes plural projectors, a lens array, and a concave axicon lens array. The projectors project images to plural viewing regions at an image side. The lens array is disposed between the projectors and the image side. The concave axicon lens array is disposed between the lens array and the image side.