A system and method for generating compact light-field displays through varying optical depths provides digital content in a more effective and efficient manner. The system includes a field-evolving cavity with a cavity exit pupil, a relay mechanism, and a system enclosure with an enclosure exit pupil. The field-evolving cavity modifies the light-field displays before outputting the light-field displays with the cavity exit pupil. More specifically, the field-evolving cavity includes at least one display panel, which initially generates the light-field displays, and at least one optical-tuning mechanism, which subsequently modifies the light-field displays to varying optical depths. The system enclosure houses the field-evolving cavity and the relay mechanism. The relay mechanism directs the light-field displays from the cavity exit pupil to the enclosure exit pupil, which outputs the light-field displays to a user.

A hologram generation device includes: a hologram object generation unit for generating a hologram target object composed of planar component bodies in an exploded view in which a plurality of canvases and a 3D object which form a screen area of a flat display panel are exploded in each of at least three directions; a hologram generation unit for generating a three-dimensional hologram of the 3D object by outputting the hologram target object through the flat display panel toward reflective surfaces, respectively, corresponding to the at least three directions; and an interaction providing unit for providing two-way interaction with the three-dimensional hologram in connection with a user terminal.

A spatial image display touch device includes an imaging element, a display, an optical film and a sensor unit. The imaging element and the display are retained in a housing and inclined to each other. The display generates an image light passing through the imaging element to form a spatial image. The optical film, composed of a plurality of micro-grids arranged in a matrix, is attached on the display. The sensor unit is mounted in the housing to detect an object appearing at the position wherein the spatial image is displayed. By arranging the optical film in front of the display, only the spatial image is visible and the problem of ghost images is avoided.

Disclosed is a 3D scanner for recording the 3D topography of an object, the 3D scanner including: a projector unit configured for projecting a structured beam of probe light onto the object; an imaging unit arranged to acquire 2D images of the object when the object is illuminated by the structured probe light beam; and an actuator unit arranged to control the position of the structured probe light beam at the object by rotating a movable portion of the projector unit around a pivoting axis, the actuator unit including a rotation motor including or arranged to drive a wheel, where the surface of the wheel operatively coupled to the movable portion of the projector unit has a radial distance from the axis of the rotation motor which changes with the rotation.

Disclosed is a 3D scanner for recording the 3D topography of an object, the 3D scanner including: a projector unit configured for projecting a structured beam of probe light onto the object; an imaging unit arranged to acquire 2D images of the object when the object is illuminated by the structured probe light beam; and an actuator unit arranged to control the position of the structured probe light beam at the object by rotating a movable portion of the projector unit around a pivoting axis, the actuator unit including a rotation motor including or arranged to drive a wheel, where the surface of the wheel operatively coupled to the movable portion of the projector unit has a radial distance from the axis of the rotation motor which changes with the rotation.

An aerial display apparatus includes: a display device configured to display an image; an optical device configured to allow light from the display device to be transmitted therethrough, and configured of a transparent material; and a mirror device configured to reflect light from the optical device and display an image in an aerial space on a side opposite to the optical device. The optical device includes a first optical member having a first thickness and a second optical member having a second thickness greater than the first thickness.

An aerial display apparatus includes: a display device configured to display an image; an optical device configured to allow light from the display device to be transmitted therethrough, and configured of a transparent material; and a mirror device configured to reflect light from the optical device and display an image in an aerial space on a side opposite to the optical device. The optical device includes a first optical member having a first thickness and a second optical member having a second thickness greater than the first thickness.

A spatial image display touch device includes an imaging element, a display, an optical film and a sensor unit. The imaging element and the display are retained in a housing and inclined to each other. The display generates an image light passing through the imaging element to form a spatial image. The optical film, composed of a plurality of micro-grids arranged in a matrix, is attached on the display. The sensor unit is mounted in the housing to detect an object appearing at the position wherein the spatial image is displayed. By arranging the optical film in front of the display, only the spatial image is visible and the problem of ghost images is avoided.

Disclosed are transparent energy relay waveguide systems for the superimposition of holographic opacity modulation states for holographic, light field, virtual, augmented and mixed reality applications. The light field system may comprise one or more energy waveguide relay systems with one or more energy modulation elements, each energy modulation element configured to modulate energy passing therethrough, whereby the energy passing therethrough may be directed according to 4D plenoptic functions or inverses thereof.

Implementations of a display device of the present disclosure include a transparent light guide plate in which a light guide plate image that is an original video of an aerial image is formed on a bottom portion, a light source configured to emit light L from a side portion of the light guide plate toward the inside of the light guide plate, a polarization beam splitter disposed in parallel with the light guide plate and above the light guide plate, a λ/4 plate disposed below the light guide plate, and a retroreflective member disposed in parallel with the light guide plate and below the λ/4 plate, which retroreflects the light guide plate image to display the aerial image.