Tensor displays

Abstract

Figure 1: Wide field of view glasses-free 3D display using tensor displays. (Left) We introduce a new family of light field displays, dubbed tensor displays, comprised of stacks of light-attenuating layers (e.g., multilayer LCDs). Rapid temporal modulation of the layers is exploited, in concert with directional backlighting, to allow large separations between viewers. (Right) From left to right: target light field view, photograph of three-layer LCD with uniform backlighting, and photograph of single LCD with directional backlighting. Layers are shown to the right of each photograph. The upper and lower rows depict perspectives seen to the left and to the right of the display, respectively. AbstractWe introduce tensor displays: a family of compressive light field displays comprising all architectures employing a stack of timemultiplexed, light-attenuating layers illuminated by uniform or directional backlighting (i.e., any low-resolution light field emitter). We show that the light field emitted by an N -layer, M -frame tensor display can be represented by an N th -order, rank-M tensor. Using this representation we introduce a unified optimization framework, based on nonnegative tensor factorization (NTF), encompassing all tensor display architectures. This framework is the first to allow joint multilayer, multiframe light field decompositions, significantly reducing artifacts observed with prior multilayer-only and multiframe-only decompositions; it is also the first optimization method for designs combining multiple layers with directional backlighting. We verify the benefits and limitations of tensor displays by constructing a prototype using modified LCD panels and a custom integral imaging backlight. Our efficient, GPU-based NTF implementation enables interactive applications. Through simulations and experiments we show that tensor displays reveal practical architectures with greater depths of field, wider fields of view, and thinner form factors, compared to prior automultiscopic displays.

Time-Sequential Working Wavelength-Selective Filter for Flat Autostereoscopic Displays

“…Rather, the design rules shown by us in [6] also permit the application of the presented switchable, wavelength-based selection barrier display arrangement to parallel and divergent radiating 3D displays. The good color separation of Fabry-Perot cells or the alternative of filter cells with bandpass characteristics can be used in multi-layered displays (staked displays) [36][37][38][39]. This would cause a significant crosstalk reduction.…”

Fabricating reflectors for displaying multiple images

“…Light field displays have also an ability to display different images depending on view directions. Some methods use stacks of liquid-crystal displays (LCDs), each of which displays its own basis image Wetzstein et al , 2012. These methods can render images with high brightness and contrast but ghosting artifacts could be produced due to the fact that all the layers are visible.…”

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

“…In this manner, in addition to the display technologies discussed above, light field displays (LFDs) have gained increasing attention these years . 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), layered directional backlights (eg, the Tensor Displays), arrayed projectors . Of these technologies, the InIm‐based type is very suitable to HMDs by typically placing a microlens array (MLA) and a microdisplay near an eye to achieve ultra‐thin volume.…”