Results 111 to 120 of about 1,330 (167)

Multifunctional metasurface coding for visible vortex beam generation, deflection and focusing. [PDF]

Nanophotonics
Tian R, Zhang Z, Gao L.
europepmc   +1 more source

Spatially heterogeneous ionic remodelling promotes wavefront instability in simulated atrial tissue. [PDF]

Front Netw Physiol
O'Loughlin L, Dharmaprani D, Ganesan A, Mitchell L.   +3 more
europepmc   +1 more source

Empowering dynamic reconfigurable OAM meta-switcher with a transmissive polarization-reconfigurable metasurface. [PDF]

iScience
Qin Z, Li Y, Zhou K, Liu J, Jiang L, Yang W, Yang H, Chen H, Zheng L, Wang W, Wang J, Ma H.   +11 more
europepmc   +1 more source

High-dimensional multiplexing through vortex electromagnetic wave manipulation by space-time-coding metasurfaces. [PDF]

Light Sci Appl
Yang C, Wang SR, Du JC, Wang MT, Wang ZX, Chan KF, Zheng DZ, Wu GB.   +7 more
europepmc   +1 more source

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Wavefront coding with adaptive optics

Proceedings of SPIE, 2015
We have implemented an extended depth of field optical system by wavefront coding with a micromachined membrane deformable mirror. This approach provides a versatile extension to standard wavefront coding based on fixed phase mask. First experimental results validate the feasibility of the use of adaptive optics for variable depth wavefront coding in ...
Michel Verhaegen, Temitope E Agbana, Oleg Soloviev   +2 more
exaly   +3 more sources

Combination of color coding and wavefront coding for extended depth of field

Optics Communications, 2017
Abstract Color coding has been experimentally demonstrated to be able to extend the depth of field (DoF) of an imaging system in single snapshot. A numerical model is adopted in this paper to quantitatively characterize its imaging properties (strehl ratio, point spread function and modulation transfer function).
Zhaolou Cao, Fenglin Xian, Chunjie Zhai
exaly   +2 more sources

Applications of wavefront coded imaging

SPIE Proceedings, 2004
Imaging systems using aspheric imaging lenses with complementary computation can deliver performance unobtainable in conventional imaging systems. These new imaging systems, termed Wavefront coded imaging systems, use specialized optics to capture a coded image of the scene.
Ramkumar Narayanswamy, Alan E. Baron, Vladislav Chumachenko, Adam Greengard   +3 more
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Spatial coding with curved wavefronts

IEEE Ultrasonics Symposium, 2004, 2005
Curved wavefronts of unfocused beams can be viewed as spatial codes that can be decoded to produce high quality images. The decoding process can be performed by spatial matched or Wiener filtering methods that are a generalization of synthetic receive processing for large apertures rather than small elements.
R. Zemp, M.F. Insana
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Wavefront coding for visual optics

Third International Conference on Applications of Optics and Photonics, 2017
Wavefront coding (WFC) enables the depth of field of incoherent optical systems to be extended. This method involves a cubic-phase plate in the system yielding a blurred image nearly invariant to defocus. In visual optics there is a big interest in improving solutions for two different problems: Presbyopia correction and high resolution retinal images ...
Justo Arines, Eva Acosta, Citlalli Almaguer   +2 more
openaire   +1 more source