Results 21 to 30 of about 5,837,988 (197)

Simulated holographic three-dimensional intensity shaping of evanescent-wave fields [PDF]

open access: yes, 2008
The size of bright structures in traveling-wave light fields is limited by diffraction. This in turn limits a number of technologies, for example, optical trapping.
Thomson, L.C.   +7 more
core   +1 more source

A Novel Approach for Measurement of Free-Form Optical Elements with Digital Holographic Microscopy

open access: yesMicromachines, 2022
Free-form optical elements face significant challenges in high-precision measurement due to their high complexity and non-rotational symmetry. Digital holographic microscopy (DHM), as one of the methods for the measurement of free-form optical elements ...
Xuhui Zhang   +4 more
doaj   +1 more source

Multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals: static and dynamic studies [PDF]

open access: yes, 2005
The optimization of the experimental parameters of two multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals is investigated.
Camacho, Maria   +4 more
core   +1 more source

Free space interconnection system with holographic optical elements

open access: yes, 2022
S.293-296We have built a demonstration model of a switching system which combines electronic switching stages with free space optical interstage interconnects using holographic optical elements.
Walf, G.   +10 more
core   +1 more source

The parameters effect on the holographic optical elements

open access: yesمجلة بغداد للعلوم, 2011
In this work we fabrication holographic optical element diffraction grating thickness 40?m and mirror90?m by using dichromated gelatin,to perform that we have to use the Nd-yaG laser doubling frequency of wavelenght (532)nm and its powers of (80)mWatt ...
Baghdad Science Journal
doaj   +1 more source

Design of a high-resolution holographic waveguide eye-Tracking system operating in near-infrared with conventional optical elements

open access: yes, 2021
The eye-Tracking system plays an essential role in the augmented reality (AR) eyewear. Waveguide volume holographic optical elements (HOE) that can be made with high efficiency, thin form, and lightweight are well-suited for this application. Traditional
Chrysler, B.   +5 more
core   +1 more source

Optical See-through 2D/3D Compatible Display Using Variable-Focus Lens and Multiplexed Holographic Optical Elements

open access: yesPhotonics, 2021
An optical see-through two-dimensional (2D)/three-dimensional (3D) compatible display using variable-focus lens and multiplexed holographic optical elements (MHOE) is presented. It mainly consists of a MHOE, a variable-focus lens and a projection display
Qinglin Ji   +5 more
doaj   +1 more source

Holographic Solar Energy Concentrator Using Angular Multiplexed and Iterative Recording Method

open access: yesIEEE Photonics Journal, 2016
Holographic optical elements can be fabricated to concentrate the solar energy with no sun tracking system. Concentrated diffraction efficiency (CDE) for the holographic solar concentrator is suggested as a new efficiency calculation method. The exposure
Jeong-Hyeon Lee   +3 more
doaj   +1 more source

Wavefront-based holographic lens optical power model for augmented reality applications

open access: yesResults in Physics
The use of holographic optical elements (HOEs) has grown significantly in recent years, particularly in augmented reality (AR) and see-through display systems. Among them, holographic lenses (HLs) have attracted special interest due to their versatility,
Tomás Lloret   +4 more
doaj   +1 more source

Real-time holographic lensless micro-endoscopy through flexible fibers via fiber bundle distal holography

open access: yesNature Communications, 2022
Fiber-based micro-endoscopes are minimally invasive, but 3D imaging is limited by the need for bulky optical elements or rigid fibers. Here, the authors demonstrate holographic imaging through flexible and dynamically bent multi-core fibers by adding ...
Noam Badt, Ori Katz
doaj   +1 more source

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