Super multi-view near-eye 3D display with enlarged field of view

Abstract

Based on temporal-multiplexing, super multi-view (SMV) technology gets implemented on a near-eye three-dimensional (3D) display, successfully overcoming the vergence accommodation conflict (VAC). The proposed system has two eyepieces for two eyes, respectively, each of which is constructed by an organic light-emitting diode (OLED) micro-display, a projecting lens, and a gating-aperture array. The gating-aperture arrays, consisting of gating apertures with an interval smaller than the diameter of the viewer's pupil, are attached to the projecting lenses and gate different spatial segments of the projecting lens's exit aperture in time sequence. Through refreshing the corresponding display contents synchronously, two or more light rays passing through a displayed point are guided by the gating-aperture array into each eye sequentially. Based on the persistence of vision, these light rays converge into a spatial light spot that the eye can focus on naturally, thus enabling a consistence between focusing distance and convergence distance. Further, gating-aperture array with polarization characteristics is designed to get a larger field of view (FOV), accompanied by a half-wave variable retarder being inserted between the OLED micro-display and the gating-aperture array in each eyepiece. Employing two OLED micro-displays of 120-Hz frame rates, a near-eye 3D display prototype has been demonstrated with an FOV 40 deg and a display frequency of 40 Hz, being free from VAC.

Design of Ultrathin Metasurface for Multiview 3D Display Based on Look-Up-Table Method

“…hree-dimensional display technologies incorporate volumetric 3D display [1][2][3], Maxwellian-view display [4], holographic display [5], light field display which comprise integral imaging [6,7], tabletop display [8] and multi view display [9][10][11][12]. However, multiview displays usually employ 2D displays and some associated optical devices to direct multiview images to multiple distinct viewing regions to implement both motion parallax and binocular parallax for the viewers.…”

Hyperboloidal reflection for full-parallax multiview 3D display observable from all directions

“…4 As is the same case with other 3D display techniques, one problem of the multi-view-based 3D display is its narrow viewing zone. Although some techniques have been proposed to enlarge the viewing zone, [5][6][7] the most fundamental limitation of the narrow viewing zone is the shape of a device displaying multiple views constituting a 3D object. The display devices of conventional multi-view 3D displays are planar; thus, it is impossible to observe a 3D object from the back or side directions of the display device.…”

The Good News, the Bad News, and the Ugly Truth: A Review on the 3D Interaction of Light Field Displays

“…Light field displays are also often addressed as super multi-view (SMV) displays in the scientific literature [27][28][29]. This terminology also extends to near-eye solutions [30][31][32], which, as the name suggests, use viewing devices near the eyes of the observer. The differences between multi-view and light field displays are exhibited in Figure 1.…”