Results 31 to 40 of about 5,099,090 (216)

Applications of computer-generated holograms in optical testing [PDF]

, 1980
Optical testing often requires a measurement of the phase difference between light from two different optical systems. One system is a master or reference system, and the other is a sample or test system.
Loomis, John Scott
core   +2 more sources

Reconstruction of computer generated holograms by spatial light modulators [PDF]

, 2006
Date of Conference: 11-13 September 2006Conference Name: International Workshop on Multimedia Content Representation, Classification and Security, MRCS 2006Computer generated holograms generated by using three different numerical techniques are ...
Onural, Levent, Benzie, P., Watson, J., İlieva, Rossitza, G. B. Esmer, L. Onural, E. Mitev, J. Watson, P. Benzie, Esmer, Gökhan Bora, T. Reyhan, Ilieva, R., M. Kovachev, R. Ilieva, Onural, L., Kovachev, Metodi, Mitev, E., Reyhan, T., Reyhan, Tarık, Kovachev, M.   +19 more
core   +1 more source

Occlusion Culling for Wide-Angle Computer-Generated Holograms Using Phase Added Stereogram Technique

Photonics, 2021
A computer-generated hologram (CGH) allows synthetizing view of 3D scene of real or virtual objects. Additionally, CGH with wide-angle view offers the possibility of having a 3D experience for large objects.
Juan Martinez-Carranza, Tomasz Kozacki, Rafał Kukołowicz, Maksymilian Chlipala, Moncy Sajeev Idicula   +4 more
doaj   +1 more source

Generation of Optical-Phase Singularities by Computer-Generated Holograms

, 1992
Laser beams that contain phase singularities can be generated with computer-generated holograms, which in the simplest case have the form of spiral Fresnel zone ...
Heckenberg, NR, C. P. Smith, McDuff, R, White, AG, N. R. Heckenberg, Smith, CP, A. G. White, R. Mcduff   +7 more
core   +1 more source

Computer-generated holograms for free-space optical interconnects

, 1998
This dissertation describes an investigation into the use of computer generated holograms to implement free-space optical interconnects. Computer generated holograms are discussed in terms of their theory of operation, design principles, fabrication ...
Coleman, Christopher Lamar, 1971-
core   +2 more sources

Quantification of Magnetic Interactions in van der Waals Heterostructures Using Lorentz Transmission Electron Microscopy and Off‐Axis Electron Holography

Advanced Materials, EarlyView.
Cross‐sectional Lorentz TEM and off‐axis electron holography visualize the magnetic domain structure and quantify interlayer coupling in Fe3GeTe2/graphite/Fe3GeTe2 heterostructures. A stray‐field coupling length of 37±$\pm$7 nm marks the onset of domain misalignment between the layers.
Joachim Dahl Thomsen, Qianqian Lan, Nikolai S. Kiselev, Eva Duft, Arslan Rehmat, Zdeněk Sofer, Rafal E. Dunin‐Borkowski   +6 more
wiley   +1 more source

Interferometric Metrology Using Reprogrammable Binary Holograms [PDF]

, 2013
Interferometric methods for surface metrology have been widely used for many years due to their speed, accuracy and versatility. It is frequently necessary however to produce a known comparison reference surface to minimise the optical path difference ...
CASHMORE, MATTHEW,THOMAS,DOLPHIN
core  

Monolithically 3D‐Printed Spectral‐Spatial Meta‐Authenticators

Advanced Materials, EarlyView.
A single height map printed in a low‐index resin by two‐photon lithography encodes multiple visible wavelengths in one metasurface without any polarization optics. A fabrication‐aware optimization folds the printable height levels into the design, so the device is printed as optimized.
Cherry Park, Shiqi Hu, Youngsun Jeon, Junsuk Rho   +3 more
wiley   +1 more source

Computer Generated Holograms [PDF]

, 1975
Computer generated holograms have been made practical by the introduction of fast Fourier transform algorithms. The following discussion will brief the reader on the theory and concepts of optical holograms, the computer hologram, and the analogies of ...
Gierloff, Jeffrey James
core  

Use of Computer-Generated Holograms in Security Hologram Applications [PDF]

, 2016
The article discusses the use of computer-generated holograms (CGHs) for the application as one of the security features in the relief-phase protective holograms.
A. Bulanovs, Bakanas, Ramūnas,, Bulanovs, A.,, R. Bakanas   +3 more
core   +1 more source