The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

Examples of the present disclosure relate to a device, method, and medium storing instructions for execution by a processor for displaying multiple images. In an example, a device may include a display to present two images interleaved, where the display includes a vertical axis parallel to a line passing through a center-bottom of the display and a center-top of the display. The device includes a first parallax barrier placed between the display and an intended viewable area, where the first parallax barrier includes a first number of parallax barrier lines, where the first number of parallax barrier lines are opaque and parallel to the vertical axis. The device includes a second parallax barrier placed between the first parallax barrier and the intended viewable area, where the second parallax barrier includes a second number of parallax barrier lines, where the second number of parallax barrier lines are opaque and parallel to the vertical axis.

Examples of the present disclosure relate to a device, method, and medium storing instructions for execution by a processor for displaying multiple images. In an example, a device may include a display to present two images interleaved, where the display includes a vertical axis parallel to a line passing through a center-bottom of the display and a center-top of the display. The device includes a first parallax barrier placed between the display and an intended viewable area, where the first parallax barrier includes a first number of parallax barrier lines, where the first number of parallax barrier lines are opaque and parallel to the vertical axis. The device includes a second parallax barrier placed between the first parallax barrier and the intended viewable area, where the second parallax barrier includes a second number of parallax barrier lines, where the second number of parallax barrier lines are opaque and parallel to the vertical axis.

A near-eye display apparatus including at least one display unit having a display element and an optical system is provided. The display element provides a light beam. The light beam includes a first light beam and a second light beam having different image information and different polarization states. The optical system includes a first semi-reflective element, a first polarization conversion element, and a polarization reflector, arranged in sequence along an optical axis. The polarization reflector allows a light beam having a first polarization state to pass and reflects a light beam having a second polarization state. The light path and the image distance of the second light beam are greater than the light path and the image distance of the first light beam, and the first light beam and the second light beam are emitted by at least one display unit to form a combined light beam.

A computer-implemented method for a directory guide, that is configured by showing the image as special visual icons that serve the function of compressing all relevant information of the implied business at once. This method focuses on convenient access by applying a visualization system that is easy for people to recognize. It also uses a method that increases the effectiveness of visual display by showing the corresponding object of an icon in a 2-D plane so that it can appear visually 3-D.

A display device includes: an optical waveguide layer having a light-entering region and a light-exiting region; an optical element correspondingly arranged in the light-entering region and configured to emit at least two types of light beams having different image information, to transmit the at least two types of light beams to the light-entering region of the optical waveguide layer; at least two coupling gratings arranged on transmission paths of the at least two types of light beams in the optical waveguide layer, and configured to change a direction of each of the at least two types of light beams in the optical waveguide layer, to enable light beams in the at least two types of light beams in the optical waveguide layer to be transmitted to the light-exiting region, exit from the light-exiting region and be converged at at least one view point.

A display device includes: an optical waveguide layer having a light-entering region and a light-exiting region; an optical element correspondingly arranged in the light-entering region and configured to emit at least two types of light beams having different image information, to transmit the at least two types of light beams to the light-entering region of the optical waveguide layer; at least two coupling gratings arranged on transmission paths of the at least two types of light beams in the optical waveguide layer, and configured to change a direction of each of the at least two types of light beams in the optical waveguide layer, to enable light beams in the at least two types of light beams in the optical waveguide layer to be transmitted to the light-exiting region, exit from the light-exiting region and be converged at at least one view point.

A three-dimensional (3D) image can be rendered by selectively transmitting a left-eye image and a right-eye image from a display panel in a manner of forming a transmitting electrode and a blocking electrode of the same layer on a switching parallax barrier and selectively applying a voltage to the transmitting electrode and the blocking electrode.

A three-dimensional (3D) image can be rendered by selectively transmitting a left-eye image and a right-eye image from a display panel in a manner of forming a transmitting electrode and a blocking electrode of the same layer on a switching parallax barrier and selectively applying a voltage to the transmitting electrode and the blocking electrode.

The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.