Projection-type see-through holographic three-dimensional display

Abstract

Owing to the limited spatio-temporal resolution of display devices, dynamic holographic three-dimensional displays suffer from a critical trade-off between the display size and the visual angle. Here we show a projection-type holographic three-dimensional display, in which a digitally designed holographic optical element and a digital holographic projection technique are combined to increase both factors at the same time. In the experiment, the enlarged holographic image, which is twice as large as the original display device, projected on the screen of the digitally designed holographic optical element was concentrated at the target observation area so as to increase the visual angle, which is six times as large as that for a general holographic display. Because the display size and the visual angle can be designed independently, the proposed system will accelerate the adoption of holographic three-dimensional displays in industrial applications, such as digital signage, in-car head-up displays, smart-glasses and head-mounted displays.

Multiplane displays based on liquid crystals for AR applications

“…To effectively address the accommodation-vergence conflict (AVC) problem, various display techniques have been proposed for AR applications, including integral imaging display, 4,[8][9][10][11] holographic display, 12,13 supermutiview display, 14,15 and volumetric display. [16][17][18][19][20][21][22][23] Integral imaging display can also provide correct accommodation depth cue by generating numerous elemental images with a microlens array, but the spatial resolution of the 3D images is greatly reduced.…”

Image formation modeling and analysis of near‐eye light field displays

“…The holographic technology can fully reproduce the parallax of the real world. But it requires complicated coherent source‐based hardware and works strongly depending on wavelengths, thereby leading to challenges in achieving sufficient spatial resolution, full‐color, real‐time capability, etc …”

“…But it requires complicated coherent source-based hardware and works strongly depending on wavelengths, thereby leading to challenges in achieving sufficient spatial resolution, full-color, real-time capability, etc. [15][16][17] In this manner, in addition to the display technologies discussed above, light field displays (LFDs) have gained increasing attention these years. [18][19][20] LFDs refer to a type of display that is capable of presenting plenoptic functions to provide VAC-free 3D content and can be implemented using various technologies, eg, the integral imaging (InIm), [20][21][22][23] layered directional backlights (eg, the Tensor Displays 24 ), arrayed projectors.…”

Full‐color multi‐plane optical see‐through head‐mounted display for augmented reality applications

“…3 To realize a comfortable AR display without visual fatigue, true 3D display methods, rather than stereoscopic display technique, should be employed in HMDs. Recently, a number of true 3D display approaches, such as light-field display, 4 holographic display, 5,6 and multi-plane display, 7,8 have been proposed for optical see-through AR displays.…”