Several unique configurations for interferometric recording of volumetric phase diffractive elements with relatively high angle diffraction for use in waveguides are disclosed. Separate layer EPE and OPE structures produced by various methods may be integrated in side-by-side or overlaid constructs, and multiple such EPE and OPE structures may be combined or multiplexed to exhibit EPE/OPE functionality in a single, spatially-coincident layer. Multiplexed structures reduce the total number of layers of materials within a stack of eyepiece optics, each of which may be responsible for displaying a given focal depth range of a volumetric image. Volumetric phase type diffractive elements are used to offer properties including spectral bandwidth selectivity that may enable registered multi-color diffracted fields, angular multiplexing capability to facilitate tiling and field-of-view expansion without crosstalk, and all-optical, relatively simple prototyping compared to other diffractive element forms, enabling rapid design iteration.

Embodiments of the present disclosure provide a stereoscopic display device, a fabrication method and a stereoscopic display method. The stereoscopic display device includes a control device, a display screen and a substrate, wherein the control device is provided between the display screen and the substrate, and the control device is configured to adjust a distance between the display screen and the substrate.

An object displaying system includes a right light signal generator, a left light signal generator, a right combiner, and a left combiner. The right light signal generator generates right light signals for an object. The right combiner receives and redirects the right light signals towards one retina of a viewer to display multiple right pixels of the object. The left light signal generator generates leftght signals for the object. The left combiner receives and redirects the left light signals towards the other retina of the viewer to display multiple left pixels of the object. A first redirected right light signal and a corresponding first redirected left light signal are perceived by the viewer to display a first virtual binocular pixel of the object with a first depth that is related to a first angle between the first redirected right light signal and the corresponding first redirected left light signal.

A multi-zone backlight and multi-zone multiview display with multiple zones selectively provide broad-angle emitted light corresponding to a two-dimensional (2D) image and directional emitted light corresponding to a multiview image to each zone of the multiple zones. The multi-zone backlight includes broad-angle backlight to provide the broad-angle emitted light and a multiview backlight to provide the directional emitted light. Each of the broad-angle backlight and the multiview backlight is divided into a first zone and a second zone that may be independently activated to provide the broad-angle emitted light and multiview emitted light, respectively. The multi-zone multiview display includes the broad-angle backlight and the multiview backlight and further includes an array of light valves configured to modulate the broad-angle emitted light as a two-dimensional image and the directional emitted light as a multiview image on a zone-by-zone basis.

The present invention discloses a decorative sheet, an electronic apparatus cover plate and an electronic apparatus. The decorative sheet is used for forming a three-dimensional image to represent a three-dimensional material object. The decorative sheet comprises a transparent protective layer, a graph-text structure layer and a reflective layer; the graph-text structure layer and the reflective layer are located on a same side of the transparent protective layer; the graph-text structure layer comprises a number of graph-text sub-blocks which form the three-dimensional image and each of which comprises a micro-structure that represents corresponding lightness of the three-dimensional material object. The lightness of light rays emitted by each graph-text sub-block comprising the micro-structure is different, and thus a change of lightness is produced among the graph-text sub-blocks. By using the lightness change among the graph-text sub-blocks to represent the lightness change of the three-dimensional material object in a natural state, the graphs and text displayed on the graph-text structure layer are enabled to have a three-dimensional effect.

The present invention discloses a decorative sheet, an electronic apparatus cover plate and an electronic apparatus. The decorative sheet is used for forming a three-dimensional image to represent a three-dimensional material object. The decorative sheet comprises a transparent protective layer, a graph-text structure layer and a reflective layer; the graph-text structure layer and the reflective layer are located on a same side of the transparent protective layer; the graph-text structure layer comprises a number of graph-text sub-blocks which form the three-dimensional image and each of which comprises a micro-structure that represents corresponding lightness of the three-dimensional material object. The lightness of light rays emitted by each graph-text sub-block comprising the micro-structure is different, and thus a change of lightness is produced among the graph-text sub-blocks. By using the lightness change among the graph-text sub-blocks to represent the lightness change of the three-dimensional material object in a natural state, the graphs and text displayed on the graph-text structure layer are enabled to have a three-dimensional effect.

A liquid crystal lens, a fabrication method thereof and a display device are provided, the liquid crystal lens comprises: a first substrate (1); a second substrate (2), opposed to the first substrate (1); a liquid crystal layer (3), interposed between the first substrate (1) and the second substrate (2); a first transparent electrode layer (5), located on a side of the first substrate (1) close to the liquid crystal layer (3); a planarization layer (6), located on a side of the first transparent electrode layer (5) close to the liquid crystal layer (3); a first alignment layer (4), located on a side of the planarization layer (6) close to the liquid crystal layer (3); a second transparent electrode layer (7), disposed on a side of the second substrate (2) close to the liquid crystal layer; a second alignment layer (8), disposed on a side of the second transparent electrode layer (7) close to the liquid crystal layer (3). The first alignment layer (4) is moved to a position where an lateral electric field is weaker, by forming the planarization layer (6) between the first transparent electrode layer (5) and the first alignment layer (4), which thus reduces a liquid crystal phase deviation and improves a refractive effect of the liquid crystal lens.

A three-dimensional (3D) display system is provided. The 3D display system includes a backlight plate, a display panel, a light-splitting device, and a polarization state controller. The display panel is configured to display a two-dimensional (2D) image in a 2D mode or to display a 3D image in a 3D mode. The light-splitting device is configured to an arrangement module configured to pass the 2D image in the 2D mode, and to separate the 3D image into a left image and a right image. Further, the polarization state controller is disposed between the display panel and the light-splitting device and is configured to rotate a polarization direction of light emitted from the display panel in the 2D mode, and to keep the polarization direction of the light emitted from the display panel in the 3D mode.

A stereoscopic image display apparatus including: an optical device having an n (n≧2) number of regions provided corresponding to the n number of parallax images, respectively, each region being capable of diffusing a coherent light beam; an irradiation unit to irradiate the optical device with a coherent light beam to scan the n number of the regions; a spatial light modulator that is illuminated with a coherent light beam incident on each of positions of the optical device and then diffused, to generate a modulated image corresponding to each of the n number of regions, in sync with the scanning of the n number of regions with the coherent light beam; and a projection optical system to project the n number of parallax images generated by the modulated image onto one plane to superimpose the parallax images on one another on the one plane at different angles.

Plasma etching processes for forming patterns in high refractive index glass substrates, such as for use as waveguides, are provided herein. The substrates may be formed of glass having a refractive index of greater than or equal to about 1.65 and having less than about 50 wt % SiO.sub.2. The plasma etching processes may include both chemical and physical etching components. In some embodiments, the plasma etching processes can include forming a patterned mask layer on at least a portion of the high refractive index glass substrate and exposing the mask layer and high refractive index glass substrate to a plasma to remove high refractive index glass from the exposed portions of the substrate. Any remaining mask layer is subsequently removed from the high refractive index glass substrate. The removal of the glass forms a desired patterned structure, such as a diffractive grating, in the high refractive index glass substrate.