Results 31 to 40 of about 26,265 (227)
Numerical investigation of lensless zoomable holographic multiple projections to tilted planes
, 2014 This paper numerically investigates the feasibility of lensless zoomable holographic multiple projections to tilted planes. We have already developed lensless zoomable holographic single projection using scaled diffraction, which calculates diffraction ...
Endo, Yutaka +9 more
core +1 more source
Holographic capture of femtosecond pulse propagation [PDF]
, 2006 We have implemented a holographic system to study the propagation of femtosecond laser pulses with high temporal (150 fs) and spatial resolutions (4 µm).
Akozbek N. +4 more
core +3 more sources
Design of a 2 diopter holographic progressive lens
Optics Express, 2018 In this contribution, we investigate the use of holographic optical elements (HOEs) as progressive addition lenses (PALs). We design HOEs with high diffraction efficiency (DE) using the Fourier Modal Method (FMM) and optimize an optical system comprising two of these HOEs to fulfill the optical function of a 2 diopter (dpt) PAL. The resulting design is
Jannik M. Trapp +4 more
openaire +2 more sources
GRIN-lens-based in-line digital holographic microscopy
Applied Optics, 2023 In-line digital holographic microscopy (DHM) provides three-dimensional images with large fields of view and depths of field and micrometer-scale resolution, using a compact, cost-effective, and stable setup. Here, we develop the theoretical background and experimentally demonstrate an in-line DHM based on a gradient-index (GRIN) rod lens. In addition,
Ali Akbar Khorshad, Nicholas Devaney
openaire +2 more sources
Locking and wavelength selection of an ultra-collimated single-mode diode laser bar by a volume holographic grating [PDF]
, 2013 Wavelength-locking by a volume holographic grating (VHG) is reported for a diode laser bar with 49 single mode emitters, fitted with a dual-axis collimation phase-plate for smile elimination and excellent beam pointing correction.
Baker, Howard John +2 more
core +1 more source
Frontiers in Physics, 2021 Modern Pepper's ghost—“floating hologram”—systems generally use transparent screens called half mirrors or foils. this system must have the same screen size as the image size in order to display a large-sized image.
Sungjae Ha +5 more
doaj +1 more source
Compressive Holographic Video [PDF]
, 2016 Compressed sensing has been discussed separately in spatial and temporal domains. Compressive holography has been introduced as a method that allows 3D tomographic reconstruction at different depths from a single 2D image.
Chen, Huaijin +6 more
core +5 more sources
Holographic Lens Array for Solar Collector with Large Angle and Expanded Spectral Width
Applied SciencesHolographic optical elements (HOEs) are promising for solar energy collection due to their advantages of lightweight and high efficiency, but the narrow reconstruction of their angular and spectral widths limits their application.
Changyu Wang, Yuan Xu, Hong Xu, Juan Liu
doaj +1 more source
Three-dimensional holographic disks [PDF]
, 1994 We describe optical disks that store data holographically in three dimensions by using either angle multiplexing or wavelength multiplexing. Data are stored and retrieved in parallel blocks or pages, and each page consists of approximately 106 bits.
Li, Hsin-Yu Sidney, Psaltis, Demetri
core +1 more source
A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display
Applied Sciences, 2019 A fast computer-generated holographic method with multiple projection images for a near-eye VR (Virtual Reality) and AR (Augmented Reality) 3D display is proposed.
Xin Yang, HongBo Zhang, Qiong-Hua Wang
doaj +1 more source