Journal ArticleDOI
A multi-directional backlight for a wide-angle, glasses-free three-dimensional display
TLDR
A multi-directional diffractive backlight technology that permits the rendering of high-resolution, full-parallax 3D images in a very wide view zone (up to 180 degrees in principle) at an observation distance of up to a metre is introduced.Abstract:
Multiview three-dimensional (3D) displays can project the correct perspectives of a 3D image in many spatial directions simultaneously They provide a 3D stereoscopic experience to many viewers at the same time with full motion parallax and do not require special glasses or eye tracking None of the leading multiview 3D solutions is particularly well suited to mobile devices (watches, mobile phones or tablets), which require the combination of a thin, portable form factor, a high spatial resolution and a wide full-parallax view zone (for short viewing distance from potentially steep angles) Here we introduce a multi-directional diffractive backlight technology that permits the rendering of high-resolution, full-parallax 3D images in a very wide view zone (up to 180 degrees in principle) at an observation distance of up to a metre The key to our design is a guided-wave illumination technique based on light-emitting diodes that produces wide-angle multiview images in colour from a thin planar transparent lightguide Pixels associated with different views or colours are spatially multiplexed and can be independently addressed and modulated at video rate using an external shutter plane To illustrate the capabilities of this technology, we use simple ink masks or a high-resolution commercial liquid-crystal display unit to demonstrate passive and active (30 frames per second) modulation of a 64-view backlight, producing 3D images with a spatial resolution of 88 pixels per inch and full-motion parallax in an unprecedented view zone of 90 degrees We also present several transparent hand-held prototypes showing animated sequences of up to six different 200-view images at a resolution of 127 pixels per inchread more
Citations
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Journal ArticleDOI
Temporal full-colour tuning through non-steady-state upconversion
TL;DR: This work demonstrates a convenient, versatile approach to dynamically fine-tuning emission in the full colour range from a new class of core-shell upconversion nanocrystals by adjusting the pulse width of infrared laser beams and suggests that the unprecedented colour tunability from these nanocry crystals is governed by a non-steady-state upconverting process.
Journal ArticleDOI
Three-dimensional display technologies
TL;DR: It would be very beneficial to readers of this journal to have a systematic review of state-of-the-art 3D display technologies.
Journal ArticleDOI
Broadband and chiral binary dielectric meta-holograms.
TL;DR: This is a study of basic holographic principles in designing new nanostructured devices that enable broadband and chiral imaging and demonstrates chiral holograms that project different images depending on the handedness of the reference beam by incorporating a geometric phase.
Journal ArticleDOI
Large-scale silicon nitride nanophotonic phased arrays at infrared and visible wavelengths.
Christopher V. Poulton,Matthew J. Byrd,Manan Raval,Zhan Su,Nanxi Li,Erman Timurdogan,Douglas D. Coolbaugh,Diedrik Vermeulen,Michael R. Watts +8 more
TL;DR: Using the same silicon nitride platform and phased array architecture, it is demonstrated that the first large-aperture visible nanophotonic phased array at 635 nm with an aperture size of 0.064°×0.074° is demonstrated, to the best of the authors' knowledge.
Journal ArticleDOI
Study of Perovskite QD Down-Converted LEDs and Six-Color White LEDs for Future Displays with Excellent Color Performance.
TL;DR: It is proposed that a PeQD-based six-color display system can reproduce true-to-life spectral distributions with high fidelity, widen the color gamut, and close the cyan and yellow gap in the RGB tricolored display by adding cyan, yellowish green, and orange colors.
References
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Proceedings ArticleDOI
Light field rendering
Marc Levoy,Pat Hanrahan +1 more
TL;DR: This paper describes a sampled representation for light fields that allows for both efficient creation and display of inward and outward looking views, and describes a compression system that is able to compress the light fields generated by more than a factor of 100:1 with very little loss of fidelity.
Journal ArticleDOI
Meep: A flexible free-software package for electromagnetic simulations by the FDTD method
Ardavan Oskooi,David Roundy,Mihai Ibanescu,Peter Bermel,John D. Joannopoulos,Steven G. Johnson +5 more
TL;DR: This paper describes Meep, a popular free implementation of the finite-difference time-domain (FDTD) method for simulating electromagnetism, and focuses on aspects of implementing a full-featured FDTD package that go beyond standard textbook descriptions of the algorithm.
Journal ArticleDOI
Shape google: Geometric words and expressions for invariant shape retrieval
TL;DR: This article uses multiscale diffusion heat kernels as “geometric words” to construct compact and informative shape descriptors by means of the “bag of features” approach, and shows that shapes can be efficiently represented as binary codes.
Journal ArticleDOI
Autostereoscopic 3D displays
TL;DR: Most of the perceptual cues that humans use to visualize the world's 3D structure are available in 2D projections, and all 3D display technologies (stereoscopic displays) provide at least stereo parallax.