A laser system for generation of three-dimensional (3D) colored images is based on semiconductor laser sources generating laser light at a plurality of wavelengths. The laser source for each basic color range (red, green and blue) is formed on a single chip. The chip can be an array of the distributed feedback lasers or an array of distributed Bragg reflector lasers, each of which generates laser light at its own wavelength, or a COMB laser generating laser light at a plurality of wavelengths.

All light illuminates a two-dimensional (2D) display, and the light transmitted through the display or reflected by the display at a given color range impinges on an optical unit, containing a first optical element, e.g., a lens or a mirror, the focal length of which is wavelength-sensitive. Light at different wavelengths forms 2D images at different depths. Then, once the images created by the display and the laser pulses at each wavelength are synchronized, all images of the given colored range are perceived by the human's eyes as a single 3D image of this color range.

To fuse 3D images in red, green and blue that are formed at different positions, an optical element, e. g., a lens or a mirror is employed, the focal length of which is adjustable by mechanical motion, or deformation, or applying an electro-optic effect in an electric field. This optical element can be either the same first element with the wavelength-dependent focal length, or a different element. Then, once the light is switched between red, green and blue color ranges, the adjustable focal length of this element is adjusted such to compensate a change of the focal length of the first element, and the focal length of the entire optical unit is restored. Then the human's eyes average the perceived light and see a smoothly moving fully colored 3D image.

An image display system includes a display, a barrier, a second mirror that has a changeable reflection angle for reflecting and projecting image light, a first controller that controls a change in the reflection angle, a camera that captures an image of a face of a driver, and a second controller that clips out a target area from a captured image output from the camera. The second controller shifts the target area as the first controller changes the reflection angle.

An image display system includes a display, a barrier, a second mirror that has a changeable reflection angle for reflecting and projecting image light, a first controller that controls a change in the reflection angle, a camera that captures an image of a face of a driver, and a second controller that clips out a target area from a captured image output from the camera. The second controller shifts the target area as the first controller changes the reflection angle.

A near-eye display system includes a display assembly comprising at least one display panel and a display driver to drive the display assembly to display a sequence of frames in a low-persistence mode based on a frame clock signal having a first frequency. The near-eye display system further includes a pair of liquid membrane lenses facing the display assembly, and a lens driver having an output coupled to an input of each of liquid membrane lenses of the pair, the lens driver to generate at the output a periodic, continuously variable driving signal having a second frequency, wherein the first frequency is an integer multiple of the second frequency. As the liquid membrane lenses are synchronized with the low-persistence display of the sequence of frames, each displayed frame is perceived through the liquid membrane lenses at a different nearly constant focal depth, and thus creating a perception to the user of multiple focal planes in the displayed imagery.

An autostereoscopic display system includes a display including a plurality of addressable pixels. Each of the plurality of pixels includes two or more sub-pixels. The display is adapted to have n views in the horizontal direction wherein n is an integer greater than or equal to 2. A native pixel density of the display in the horizontal direction divided by n is greater than 75% of a native pixel density in the vertical direction. The system further includes a view selector that, for each of two or more viewing perspectives, makes one of the views visible and a multiplexer system in operative connection with the display. The multiplexer system is adapted to controllably shift light horizontally from at least one of the plurality of pixels.

A volumetric display capable of high-speed image presentation includes a resonance-type liquid lens having a focal length that is periodically adjusted using resonance of a liquid. An image projector projects an image toward a viewpoint position of a user via the resonance-type liquid lens. Further, the image projector projects an image toward the viewpoint position within a shorter time period than one-tenth of a variation cycle of the focal length. The image projector includes an LED and a DMD, for example.

For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.

A stereoscopic imaging device including: a body having a stereoscopic image display window for providing a stereoscopic image; an image combining panel which divides an inner space of the body into a first space for providing a virtual image, and a second space for providing a real image, on the stereoscopic image display window, transparency of the image combining panel being changed by input of a power; a first display which is positioned in the first space to provide the virtual image on the stereoscopic image display window through the image combining panel; a target mechanism which is positioned in the second space to provide the real image on the stereoscopic image display window through the image combining panel; an illumination mechanism which is positioned in the second space to illuminate a beam of light onto the target mechanism; and a control unit for controlling the respective units.

Systems and methods are described for providing a 3D display, such as a light-field display. In some embodiments, a display device includes a light-emitting layer comprising an addressable array of light-emitting elements. An optical layer overlays the light-emitting layer. The optical layer includes a plurality of distributed lenses. In some embodiments, the distributed lenses include non-contiguous lens regions. In some embodiments, distributed lens regions with different optical centers are interlaced with one another. A spatial light modulator is operative to provide control over which lens regions transmit light from the light-emitting layer outside the display device. In some embodiments, the use of interlaced and/or non-contiguous distributed lenses provides improved display resolution with a reduction in diffraction effects.

The present disclosure relates to a projection device, and more particularly, to a projection device including: a projector module configured to provide an image to a screen; and a lens module between a user's eyes and the screen, wherein the project module includes: a display module configured to provide a certain image; and a backlight module configured to provide light to the display module such that the image provided by the display module is projected on the screen, wherein the display module is between the backlight module and the screen, the display module is configured to induce a convergence reaction on the user's eyes such that the image projected on the screen has a convergence distance, and the lens module is configured to induce a focus reaction on the user's eyes and change a focal length of the image reproduced by the display module within a certain range.