An image display device, including a light-emitting pixel array operable to emit a plurality of two-dimensional images each comprising a plurality of pixels; a light field converter comprising a coherent optical fiber plate including a plurality of optical fibers, wherein the optical fiber plate has a first surface and a second surface, and an array of lenslets arranged along the second surface, wherein the array of lenslets is configured to have a focal surface conforming to the second surface of the optical fiber plate; wherein the light field converter is operable to transform pixels from each of the plurality of two-dimensional images into corresponding diverging rays; wherein the diverging rays form virtual three-dimensional image in an image-forming region.

An image display device, including a light-emitting pixel array operable to emit a plurality of two-dimensional images each comprising a plurality of pixels; a light field converter comprising a coherent optical fiber plate including a plurality of optical fibers, wherein the optical fiber plate has a first surface and a second surface, and an array of lenslets arranged along the second surface, wherein the array of lenslets is configured to have a focal surface conforming to the second surface of the optical fiber plate; wherein the light field converter is operable to transform pixels from each of the plurality of two-dimensional images into corresponding diverging rays; wherein the diverging rays form virtual three-dimensional image in an image-forming region.

Implementations of a compressive light field projection system are disclosed herein. In one embodiment, the compressive light field projection system utilizes a pair of light modulators, such as digital micromirror devices (DMDs), that interact to produce a light field. The light field is then projected via a projection lens onto a screen, which may be an angle expanding projection screen that includes a Fresnel lens for straightening the views of the light field and either a double lenticular array of Keplerian lens pairs or a single lenticular, for increasing the field of view. In addition, compression techniques are disclosed for generating patterns to place on the pair of light modulators so as to reduce the number of frames needed to recreate a light field.

In one embodiment, an electronic display assembly includes a sensor array located on one side of a circuit board and an electronic display array located on an opposite side of the circuit board from the sensor array. The sensor array includes a plurality of sensor pixel units. Each sensor pixel unit includes a plurality of sensor pixels. The electronic display array includes a plurality of display pixel units. Each display pixel unit includes a plurality of display pixels. Each particular one of the plurality of sensor pixel units is mapped to a corresponding one of the plurality of display pixel units such that display pixels of each particular one of the plurality of display pixel units display light corresponding to light captured by sensor pixels of its mapped sensor pixel unit.

In one embodiment, an electronic display assembly includes a sensor array located on one side of a circuit board and an electronic display array located on an opposite side of the circuit board from the sensor array. The sensor array includes a plurality of sensor pixel units. Each sensor pixel unit includes a plurality of sensor pixels. The electronic display array includes a plurality of display pixel units. Each display pixel unit includes a plurality of display pixels. Each particular one of the plurality of sensor pixel units is mapped to a corresponding one of the plurality of display pixel units such that display pixels of each particular one of the plurality of display pixel units display light corresponding to light captured by sensor pixels of its mapped sensor pixel unit.

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.

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.

Disclosed are a projection device and a spatial imaging method. The projection device includes: an optical fiber scanner array; a light source located on an incident light path of the optical fiber scanner array; and an adjustment and control module assembly configured to couple, according to a virtual scene to be displayed, light emitted by the light source into the optical fiber scanner array, and to control the optical fiber scanner array to project pencil beams to a plurality of virtual object points corresponding to the virtual scene and located in space, such that multiple pencil beams projected to each virtual object point form a bundle of emitting light beams.

A display apparatus and method are provided. The display apparatus includes a multi-focus image generation unit and a time sequence control unit. The multi-focus image generation unit is connected to the time sequence control unit. The time sequence control unit is configured to: generate a plurality of time sequence instructions that belong to a first switching period, and send the plurality of time sequence instructions that belong to the first switching period. The multi-focus image generation unit is configured to: receive the plurality of time sequence instructions that belong to the first switching period from the time sequence control unit, and generate a plurality of corresponding 3D image blocks at different distances based on the plurality of time sequence instructions. The plurality of 3D image blocks respectively corresponds to a 3D image and include different depth information for display in the first switching period.

A display apparatus and method are provided. The display apparatus includes a multi-focus image generation unit and a time sequence control unit. The multi-focus image generation unit is connected to the time sequence control unit. The time sequence control unit is configured to: generate a plurality of time sequence instructions that belong to a first switching period, and send the plurality of time sequence instructions that belong to the first switching period. The multi-focus image generation unit is configured to: receive the plurality of time sequence instructions that belong to the first switching period from the time sequence control unit, and generate a plurality of corresponding 3D image blocks at different distances based on the plurality of time sequence instructions. The plurality of 3D image blocks respectively corresponds to a 3D image and include different depth information for display in the first switching period.