Results 131 to 140 of about 154,766 (375)
Advanced Science, EarlyView.A metasurface‐based structured light system for real‐time three‐dimensional reconstruction and forward ranging is demonstrated. By simultaneously emitting grazing and normal emission beams, hardware limitations are overcome. Combining adaptive closed‐line light patterns with a point cloud enhancement algorithm enables 30 frames per second imaging in ...
Zhengren Zhang +5 more
wiley +1 more source
ОфтальмохирургияRelevance. This study presents a comparative analysis of the effectiveness of toric intraocular lens (IOL) with a wavefront shaping mechanism implantation in cataract surgical treatment in patients after penetrating keratoplasty (PKP). Purpose.
D.A. Khvan, G.A. Fedyashev
doaj +1 more source
Spectrally resolved single-shot wavefront sensing of broadband high-harmonic sources
, 2017 Wavefront sensors are an important tool to characterize coherent beams of extreme ultraviolet radiation. However, conventional Hartmann-type sensors do not allow for independent wavefront characterization of different spectral components that may be ...
0000-0003-4753-3173 +5 more
core +2 more sources
Meta‐Dispersive 3D Chromatic Confocal Measurement
Advanced Science, EarlyView.A dispersive metalens (DML) combined with the chromatic confocal method is achieved for high‐precision 3D measurement in this study. This approach enables both high axial and lateral resolutions in compact optics. The development offers a promising route toward precise, miniaturized depth sensing for future applications in microstructure inspection and
Jiajun Wu +8 more
wiley +1 more source
Spatio-temporal modelling of wave formation in an excitable chemical medium based on a revised FitzHugh-Nagumo model [PDF]
, 2010 The wavefront profile and the propagation velocity of waves in an experimentally observed Belousov-Zhabotinskii reaction are analyzed and a revised FitzHumgh-Nagumo(FHN) model of these systems is identified.
Billings, S.A. +5 more
core
Recovering pyramid WS gain in non-common path aberration correction mode via deformable lens
, 2017 It is by now well known that pyramid based wavefront sensors, once in closed loop, have the capability to improve more and more the gain as the reference natural star image size is getting smaller on the pyramid pin. Especially in extreme adaptive optics
Bergomi, M. +7 more
core +1 more source
Scanning Wavefront Sensor for Measurement of Highly Divergent Wavefronts
IFAC-PapersOnLine, 2019 Abstract This paper deals with the characterization of freeform optics by means of a wavefront sensor. Freeform optics show an increasing demand since they have the potential to improve optical system performance while reducing size, weight and complexity.
Georg Schitter, Martin E. Fuerst
openaire +2 more sources
High‐Speed Design of Multiplexed Meta‐Optics Enabled by Physics‐Driven Self‐Supervised Network
Advanced Science, EarlyView.A physics‐driven self‐supervised network (PDSS‐Net) is proposed for high‐speed, iteration‐free design of multiplexed meta‐optics. By learning a direct mapping from holographic targets to all meta‐atom structures, PDSS‐Net achieves a 1000× speedup over traditional optimization methods in designing 2K RGB meta‐holograms.
Yuqing He +7 more
wiley +1 more source
Hyperbolic Metamaterial Devices for Wavefront Manipulation
Laser & Photonics reviews, 2018 Metasurfaces have shown great potential to reshape the wavefront of electromagnetic (EM) waves, but transmissive meta‐devices face challenges of low‐efficiency and/or fabrication complexities.
X. Yin +12 more
semanticscholar +1 more source
Feedback-based wavefront shaping [PDF]
Optics Express, 2015 Light scattering was thought to be the fundamental limitation for the depth at which optical imaging methods can retain their resolution and sensitivity. However, it was shown that light can be focused inside even the most strongly scattering objects by spatially shaping the wavefront of the incident light.
openaire +4 more sources