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We created a novel optical security device that integrates multiple computer-generated holograms within a single colour image. Under white light, this "holographic colour print" appears as a colour image, whereas illumination with a red,…

Optics · Physics 2019-01-10 Kevin T. P. Lim , Hailong Liu , Yejing Liu , Joel K. W. Yang

We describe the most general homogenous, planar, light-ray-direction-changing sheet that performs one-to-one imaging between object space and image space. This is a non-trivial special case (of the sheet being homogenous) of an earlier…

Optics · Physics 2015-06-17 Stephen Oxburgh , Johannes Courtial

A hologram is an optical element storing phase and possibly amplitude information enabling the reconstruction of a three dimensional image of an object by illumination and scattering of a coherent beam of light, and the image is generated…

Optics · Physics 2016-09-21 Euclides Almeida , Ora Bitton , Yehiam Prior

We study the evolution of holographic screens, both generally and in explicit examples, including cosmology and gravitational collapse. A screen $H$ consists of a one-parameter sequence of maximal surfaces called leaves. Its causal…

High Energy Physics - Theory · Physics 2017-02-22 Raphael Bousso , Mudassir Moosa

By tooling an spot-illuminated surface to control the flow of specular glints under motion, one can produce holographic view-dependent imagery. This paper presents the differential equation that governs the shape of the specular surfaces,…

Graphics · Computer Science 2016-01-20 Matthew Brand

A estereoscopia eh uma tecnica que permite a observacao de imagens tridimensionais, mas estah sempre associada com o uso de algum equipamento especial para visualizacao, como oculos bicolores ou polarizados. Para o uso em aplicacoes medicas…

Optics · Physics 2010-04-15 J. J. Lunazzi , R. L. Serra , D. S. F. Magalhaes

The recently proposed optical elements containing semitransparent wavelike films embedded into the transparent material are investigated. Such optical elements do not distort a wave transmitted through them. Novel optical elements can be…

Optics · Physics 2021-09-29 A. M. Smolovich , V. V. Kashin , V. Chernov

Original realization of a lens capable to transmit images with sub-wavelength resolution is proposed. The lens is formed by parallel conducting wires and effectively operates as a telegraph: it captures image at the front interface and the…

Materials Science · Physics 2009-11-11 Pavel A. Belov , Yang Hao , Sunil Sudhakaran

Novel optical elements containing semitransparent wavelike films embedded into the bulk of transparent material, which form a reflection image without transmitted light distortion, are studied. The dynamic theory of light diffraction by a…

Optics · Physics 2018-05-23 Anatoly M. Smolovich , Valery Chernov

Holographic optical tweezers use computer-generated holograms to create arbitrary three-dimensional configurations of single-beam optical traps useful for capturing, moving and transforming mesoscopic objects. Through a combination of…

Soft Condensed Matter · Physics 2009-11-11 David G. Grier , Yael Roichman

This paper develops a simple and fast method to reconstruct reality from stereoscopic images. We bring together ideas from robust optical flow techniques, morphing deformations and lightfield 3D rendering in order to create unsupervised…

Image and Video Processing · Electrical Eng. & Systems 2020-01-03 Enrique Canessa , Livio Tenze

We propose a formulation of the holographic principle, suitable for a background independent quantum theory of cosmology. It is stated as a relationship between the flow of quantum information and the causal structure of a quantum…

High Energy Physics - Theory · Physics 2007-05-23 Fotini Markopoulou , Lee Smolin

Light-emitting metasurfaces provide a compact, integrated solution for simultaneous light generation and beam shaping, making them a promising candidate for advanced photonic applications. However, existing approaches for tailoring…

In this paper we describe one setup employed for the recording of two types of holographic screens that can be used in white-light applications. We show how to obtain holographic screens with areas up to 1370 cm2 and diffraction efficiency…

Optics · Physics 2010-04-27 Jose J. Lunazzi , Daniel S. F. Magalhaes , Rolando L. Serra

We introduce an all-optical system, termed the "lying mirror", to hide input information by transforming it into misleading, ordinary-looking patterns that effectively camouflage the underlying image data and deceive the observers. This…

Optics · Physics 2024-10-22 Yuhang Li , Shiqi Chen , Bijie Bai , Aydogan Ozcan

We present a novel near-eye display concept which consists of a waveguide combiner, a spatial light modulator, and a laser light source. The proposed system can display true 3D holographic images through see-through pupil-replicating…

Optics · Physics 2022-11-08 Changwon Jang , Kiseung Bang , Minseok Chae , Byoungho Lee , Douglas Lanman

The traditional head-up display (HUD) system has the disadvantages of a small area and a single display plane, here we propose and design an augmented reality (AR) HUD system with multi-plane, large area, high diffraction efficiency and a…

Human-Computer Interaction · Computer Science 2021-04-30 Zhenlv Lv , Juan Liu , Liangfa Xu

Holographic diffusers have long been recognized as versatile components with a broad number of applications. In this work we discuss holographic diffusers for projection of laser light from a Liquid Crystal Display(LCD) onto a holographic…

Optics · Physics 2009-11-07 L. E. helseth , I. Singstad

Multiplexed planar printings, made of single or few layer micro and nano optical platforms, are essential for high capacity display, information storage and encryption. Although having been developed rapidly, the demonstrated channels are…

Optics · Physics 2022-06-17 Yunxuan Wei , Tie Hu , Xing Feng , Ming Zhao , Zhenyu Yang

Two transformation-optics inspired flat lenses are used to build up an optical system capable to transpose an area surrounding the object focal point in a magnified area surrounding the image focal point. The object and image focal points…

Optics · Physics 2018-08-10 Mircea Giloan , Robert Gutt