A display apparatus may include: a first base substrate; a driving circuit unit disposed on the first base substrate and including a plurality of gate lines, a plurality of data lines and a plurality of thin film transistors electrically connected to the plurality of gate lines and the plurality of data lines; a driving circuit controller including a gate driver disposed between the driving circuit unit and the first base substrate and outputting a gate signal to the gate lines, a data driver outputting a data voltage to the plurality of data lines and an interface circuit unit controlling operation timings of the gate driver and the data driver; and an image embodying unit disposed on the driving circuit unit and embodying an image in response to a signal received from the driving circuit unit.

Computer-generated holographic display systems are described with improved image quality when used with illumination sources other than single mode lasers, such as broader emission light sources including LEDs and multi-mode lasers.

A method for displaying a hologram to a variable direction including using circuitry to determine a direction from a holographic projector to a viewer for projecting a hologram to a viewer, and projecting a hologram in the determined direction, in which the projecting the hologram includes reflecting from a same mirror as the determining the direction of the viewer, and the circuitry controls the projecting the hologram to a direction corrected for a difference in direction between a projecting unit and a tracking unit relative to the mirror. Related apparatus and methods are also described.

Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180 around an axis of revolution.

A holographic display device accepts different configurations for rendering a Computer Generated Hologram. The decoder which prepares the CGH may not have the required memory and processing resources to provide the holographic display device with CGH generated in the nominal preferred configuration. According to the present principles, messages are exchanged between the holographic decoder and the holographic display device to select a configuration that the holographic display device accept and that fit the memory and processing resources of the holographic decoder.

An apparatus for generating a hologram that may generate a three-dimensional (3D) hologram pattern at a high speed may include a pattern setting unit to set points for which hologram patterns are to be generated with respect to a one-eighth area of an entire area for which a hologram pattern is to be generated, a calculation unit to calculate pattern values for a plurality of reference points selected with respect to the one-eighth area of the entire area, and to generate a pattern for the one-eighth area using recurrent interpolation, and a pattern duplicating unit to complete a pattern for the entire area by duplicating the generated pattern for the one-eighth area.

Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180 around an axis of revolution.

A volumetric display system including a volumetric display for displaying a scene viewable as a three-dimensional floating-in-the-air scene in a display space, enabling a user to reach a first object into the display space, a location determination unit locating real objects in the display space, providing a location of the first object when the first object is inserted into the display space, and a computer for receiving the location of the first object, detecting when the location of the first object is at a location where an object is displayed in the three-dimensional scene, thereby determining that the first object is viewable as touching the displayed object following a detection of the first object viewable as touching the displayed object, producing a new three-dimensional scene displaying the displayed object as if manipulated by the first object. Related apparatus and methods are also described.

A holographic projector includes an illumination system arranged to illuminate a hologram displayed on the pixel area of a spatial light modulator to form a holographic wavefront, and further includes a waveguide including an input port arranged to receive the holographic wavefront and a pair of opposing surfaces arranged to waveguide the holographic wavefront. A first surface of the pair of opposing surfaces is partially reflective-transmissive such that a plurality of replicas of the holographic wavefront are emitted therefrom. The illumination system includes a light source arranged to emit diverging light and a first collimating lens arranged to collimate the light. The collimated light has a varying intensity profile, in at least one dimension. The illumination system is configured such that the pixel area is contained within an area delineated by the width of the intensity profile of the collimated light at half the maximum intensity of said intensity profile.