An optical product can reproduce a first 3D image of at least part of a first 3D object and a second 3D image of at least part of a second 3D object. The optical product comprises a surface configured, when illuminated, to reproduce by reflected or transmitted light, the first 3D image without reproducing the second 3D image at a first angle of view, and the second 3D image without reproducing the first 3D image at a second angle of view. Each portion of first portions can correspond to a point on a surface of the first 3D object, and comprise first non-holographic features configured to produce at least part of the first 3D image. Each portion of second portions can correspond to a point on a surface of the second 3D object, and comprise second non-holographic features configured to produce at least part of the second 3D image.

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 display method of an image is disclosed. A position of a vergence surface of a user is obtained through a gaze tracking device. An image is provided by a display, the image is located at a virtual image surface, and the image has an offset between different view directions. A controller is coupled to the gaze tracking device and the display. The controller receives an information of the position of the vergence surface obtained through the gaze tracking device, performs an algorithm processing according to the information to obtain the offset, and transmits a display information including the offset to the display. An eye of the user focuses on an accommodation surface when viewing the image, and a position of the accommodation surface is different from a position of the virtual image surface.

A display method of an image is disclosed. A position of a vergence surface of a user is obtained through a gaze tracking device. An image is provided by a display, the image is located at a virtual image surface, and the image has an offset between different view directions. A controller is coupled to the gaze tracking device and the display. The controller receives an information of the position of the vergence surface obtained through the gaze tracking device, performs an algorithm processing according to the information to obtain the offset, and transmits a display information including the offset to the display. An eye of the user focuses on an accommodation surface when viewing the image, and a position of the accommodation surface is different from a position of the virtual image surface.

An optical device includes a liquid crystal layer having a first plurality of liquid crystal molecules arranged in a first pattern and a second plurality of liquid crystal molecules arranged in a second pattern. The first and the second pattern are separated from each other by a distance of about 20 nm and about 100 nm along a longitudinal or a transverse axis of the liquid crystal layer. The first and the second plurality of liquid crystal molecules are configured as first and second grating structures that can redirect light of visible or infrared wavelengths.

The present disclosure concerns a light-field projection system, comprising a pin-light array generating an incident light-field illuminating an optical light modulator for modulating the incident light-field and projecting a plurality of modulated light-field components along a projection axis; a first optical element configured for forming first pin-light images in a first pin-light plane and modulator images in a modulator image plane; and a second optical element defining an eye-box region and for forming second pin-light images in a second pin-light plane within the eye-box; the first and second pin-light planes and the modulator image plane being substantially perpendicular to the projection axis; the system further comprising at least one optical device at the first pin-light plane and being configured for interacting with at least one of the modulated light-field components, spatially shifting the modulated light-field components in the modulator image plane. The light-field projection allows for foveated projection.

Provided is a beam deflector including: a first electrode layer including a plurality of electrode patterns that are arranged in a first direction; a second electrode layer provided to oppose the first electrode layer; a liquid crystal layer provided between the first electrode layer and the second electrode layer in a second direction perpendicular to the first direction, and including a plurality of liquid crystal molecules; an input channel unit including a plurality of input channels; a demultiplexer configured to divide each of the input channels into a preset number of divided channels, and connect the divided channels to the electrode patterns; and a control circuit connected to the demultiplexer, and configured to control an output signal output from the divided channels to the first electrode layer.

A head mounted display including a first display, a second display, a third display, and an optical element is provided. The first display projects a first image to a first target area. The second display projects a second image to a second target area. The third display projects a third image. The optical element is disposed among the first target area, the second target area, the first display, the second display, and the third display. The optical element transmits the first image to the first target area and the second image to the second target area, and reflects the third image toward the first target area and the second target area.

A head mounted display including a first display, a second display, a third display, and an optical element is provided. The first display projects a first image to a first target area. The second display projects a second image to a second target area. The third display projects a third image. The optical element is disposed among the first target area, the second target area, the first display, the second display, and the third display. The optical element transmits the first image to the first target area and the second image to the second target area, and reflects the third image toward the first target area and the second target area.

An augmented reality display device configured to be disposed on a head of a user includes a display, a relay lens set, a beam splitting module, and a curved mirror. The display is configured to emit an image beam. The relay lens set is disposed on a path of the image beam. The beam splitting module is disposed on a path of the image beam from the relay lens set. The curved mirror is configured to reflect the image beam from the beam splitting module back to the beam splitting module. The image beam reflected by the curved mirror penetrates through the beam splitting module and is then transmitted to a pupil of the user. The beam splitting module includes a polarizer, a brightness enhancement film, and a phase retardation film stacked together in sequence from a side adjacent to the pupil to a side adjacent to the curved mirror.