One embodiment of a display system includes one or more light sources, one or more spatial light modulators, and a plurality of scatterers. One embodiment of a method for displaying content includes computing at least one of a phase or an amplitude modulation associated with two-dimensional (2D) or three-dimensional (3D) content, and causing one or more spatial light modulators to modulate light based on the at least one of a phase or an amplitude modulation to generate modulated light, where the modulated light is scattered by a plurality of scatterers.

Provided is a display medium configured to allow for intended drawing. The display medium includes a first recording layer capable of performing recording with a first laser beam having a first peak wavelength and a second recording layer capable of performing recording with a second laser beam having a second peak wavelength. The first recording layer and the second recording layer employ different recording methods.

A holographic projection system includes: a light source configured to generate a first light beam; a spatial light modulator configured to receive the first light beam and project a second light beam; a diffuser configured to rotate and including multiple regions, where two or more of the regions include respective down conversion materials, and where each of the respective down conversion materials convert a color of the second light beam to another color; and at least one control module configured to generate an image, encode the spatial light modulator with multiple holograms to generate the second light beam including instances of the image, and control rotation of the diffuser to display and overlay the instances of the image to provide a resultant image.

A system may include an image plane, a scrim layer, and a lens stack positioned between the image plane and the scrim layer. The lens stack may be positioned at a first distance from the image plane to create a perceived image at a second distance away from the lens stack. The first and second distances may be equal. The image source may be spaced away from the lens stack and on a first side of the lens stack. The scrim layer may be positioned on a second side of the lens stack. The lens stack may include a pair of lenses (e.g., identical Fresnel lenses) stacked facing each other. A bounce mirror positioned between the image plane and the lens stack may fold an optical path from the image plane to the lens stack. Additional systems and associated methods are also disclosed.

A display panel (1) comprising a body of optical material, the body having at least one optical image recorded therein in an encoded manner, wherein the image is selectively reconstructable and viewable (5, 6, 7) by illuminating the panel (1) using at least one light source (3a, 3b, 3c) under selected illumination conditions, wherein the image is reconstructable and viewable (5, 6, 7) such that at least one first optical property or parameter of the reconstructed image (e.g. its geometry, position in space, colour, its dynamic appearance) is selectable in value from amongst variable values of the at least one first optical property or parameter, or whose value is actively modifiable over time, as a function of or in dependence on the value of at least one second optical property or parameter of the illumination conditions of the at least one light source (e.g. its/their position(s) or spacing(s) relative to the panel (1), its/their colour, brightness/optical intensity, polarisation, direction of light ray propagation, application of a scanning technique to illuminate the panel (1)) which is selectable from amongst variable values thereof or which is actively modifiable in value over time.

A focus adjustment method for acquiring an image of a surface of interest of a sample by a holographic imager includes the steps of: placing the sample including at least one reference object having a known shape and described by characterising parameters having at least position parameters acquiring an image and determining the position of the reference object with respect to the acquisition plane, by applying a light diffraction model involving the spatial parameters of the reference object estimated by approximating the appearance of the reference object in the holographic image acquired, and determining the position of the surface of interest with respect to the acquisition plane from a position of the reference object and focus adjustment of the image acquisition.

A holographic projection system includes: a light source configured to generate a first light beam; a spatial light modulator configured to receive the first light beam and project a second light beam; a diffuser configured to rotate and including multiple regions, where two or more of the regions include respective down conversion materials, and where each of the respective down conversion materials convert a color of the second light beam to another color; and at least one control module configured to generate an image, encode the spatial light modulator with multiple holograms to generate the second light beam including instances of the image, and control rotation of the diffuser to display and overlay the instances of the image to provide a resultant image.

Methods, apparatus, devices, and systems for three-dimensional (3D) displaying objects are provided. In one aspect, a method includes obtaining data including respective primitive data for primitives corresponding to an object, determining an electromagnetic (EM) field contribution to each element of a display for each of the primitives by calculating an EM field propagation from the primitive to the element, generating a sum of the EM field contributions from the primitives for each of the elements, transmitting to each of the elements a respective control signal for modulating at least one property of the element based on the sum of the EM field contributions, and transmitting a timing control signal to an illuminator to activate the illuminator to illuminate light on the display, such that the light is caused by the modulated elements of the display to form a volumetric light field corresponding to the object.

This disclosure relates to a stimulus-responsive dynamic meta-holographic device. According to an aspect of the disclosure, a stimulus-responsive dynamic meta-holographic device can be provided, which includes a metasurface in which a plurality of nanostructures are provided; wherein in the metasurface is provided a liquid crystal layer comprising a plurality of cells that may be altered in arrangements by outer stimulus, wherein the liquid crystal layer, is configured to alter the polarization state of the transmitted beam penetrating the liquid crystal layer as the arrangements of the cells are altered by outer stimulus.

A holographic display system and an electronic device are provided. The holographic display system includes: at least a first optical module, a second optical module and a third optical module arranged sequentially in a first direction towards which the backlight is to be emitted. The first optical module is configured to transmit light of a first polarization direction, the second optical module is configured to transmit light of a second polarization direction, and the third optical module is configured to transmit light of a third polarization direction. The first polarization direction and the second polarization direction are at an angle of .sub.1, the second polarization direction and the third polarization direction are at an angle of .sub.2, and the first polarization direction and the third polarization direction are at an angle of .sub.3, .sub.3 is greater than at least one of .sub.1 and .sub.2.