A display apparatus capable of providing an expanded viewing window includes a light guide plate including an input coupler and an output coupler; and an image providing apparatus facing the input coupler to provide an image to the input coupler. The input coupler may include a plurality of sub input couplers configured to propagate the image provided from the image providing apparatus at different angles in the light guide plate.

A holographic display device for presenting a hologram-like image and a method of use are disclosed. The holographic display device includes a box-like structure, a translucent panel, and light panels extending the entire length of the box-like structure. The light panels position between the box-like structure and the translucent panel. The holographic display device includes a transparent monitor connecting the box-like structure at its front end. The transparent monitor receives and displays an image. The light panels illuminate light and the translucent panel diffuses, blends, and evenly distributes the light in the interior. Transmitted shadowing to the monitor provides a realistic appearance. A unique image capturing system for capturing the image to be displayed on the transparent monitor is also disclosed. The image capturing system transmits the image to the holographic display device in real-time or as a pre-recorded image using wired or wireless protocols.

Provided is a display method that prevents degradation of image quality due to ghosting. The display method performed with a display apparatus includes a viewpoint position detection step (S1) for detecting a viewpoint position d that is an interval between a reflection screen and a viewer α, a diffusion property control step (S2) for controlling a diffusion property of the reflection screen 40 in accordance with the viewpoint position d, and a projection step for projecting multiple viewpoint video images having disparity from multiple projectors to the reflection screen. The diffusion property control step (S2) includes controlling the diffusion property of the reflection screen 40 by varying a voltage or a duty cycle of an ac signal that is applied to a diffuser layer included in the reflection screen.

A system includes a first optical assembly (OA), a second OA and a processor. The first OA and second OA each coupled with a first and second microscope eyepiece, respectively. Each first and second OAs including a light source, configured to direct an emitted light beam (ELB) through the microscope toward an organ, and an image sensor, configured to sense a reflected light beam (RLB), which is reflected from the organ through the microscope, and to produce a signal indicative of the RLB. The processor is configured to control the first and second OAs to alternately direct the ELB and sense the RLB at first and second time intervals, and alternately display on a first display, during the first time intervals, images based on the signal from the first OA, and display on a second display, during the second time intervals, images based on the signal from the second OA.

Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device configured to diffract a plurality of different colors of light to the display. The optical device is configured such that, when the plurality of different colors of light is incident on the optical device, the optical device separates light of individual colors of the different colors while suppressing crosstalk between the different colors.

Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device configured to diffract a plurality of different colors of light to the display. The optical device is configured such that, when the plurality of different colors of light is incident on the optical device, the optical device separates light of individual colors of the different colors while suppressing crosstalk between the different colors.

An eyeglass device includes an eyeglass frame having a pair of side arms and a pair of optics. A camera and one or more speakers are supported by the eyeglass frame. A touch sensor is supported by the eyeglass frame for at least controlling volume of the one or more speakers.

An augmented reality display system is configured to direct a plurality of parallactically-disparate intra-pupil images into a viewer's eye. The parallactically-disparate intra-pupil images provide different parallax views of a virtual object, and impinge on the pupil from different angles. In the aggregate, the wavefronts of light forming the images approximate a continuous divergent wavefront and provide selectable accommodation cues for the user, depending on the amount of parallax disparity between the intra-pupil images. The amount of parallax disparity is selected using a light source that outputs light for different images from different locations, with spatial differences in the locations of the light output providing differences in the paths that the light takes to the eye, which in turn provide different amounts of parallax disparity. Advantageously, the wavefront divergence, and the accommodation cue provided to the eye of the user, may be varied by appropriate selection of parallax disparity, which may be set by selecting the amount of spatial separation between the locations of light output.

A panel with a virtual curved display surface and a display device are provided. The virtual curved display panel includes a display panel and a grating. The grating is disposed at a light-exiting side of the display panel, and includes a plurality of light-transmitting regions and a plurality of light-shielding regions spaced apart from each other. Respective widths of the plurality of light-shielding regions of the grating are gradually decreased as respective distances from the plurality of light-shielding regions to a symmetry axis of the display panel are increased, and respective widths of the plurality of light-transmitting regions are gradually increased as respective distances from the plurality of light-transmitting regions to the symmetry axis of the display panel are increased.

A panel with a virtual curved display surface and a display device are provided. The virtual curved display panel includes a display panel and a grating. The grating is disposed at a light-exiting side of the display panel, and includes a plurality of light-transmitting regions and a plurality of light-shielding regions spaced apart from each other. Respective widths of the plurality of light-shielding regions of the grating are gradually decreased as respective distances from the plurality of light-shielding regions to a symmetry axis of the display panel are increased, and respective widths of the plurality of light-transmitting regions are gradually increased as respective distances from the plurality of light-transmitting regions to the symmetry axis of the display panel are increased.