Results 251 to 260 of about 38,857 (309)
Fourier-plane wavefront and SLM aberration characterization via iterative scanning of beam deflector segments. [PDF]
Sci RepWojcik AJ +4 more
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Clinical Ophthalmology, 2023 Thomas Kohnen,1 John P Berdahl,2 Xin Hong,3 Chandra Bala4 1Department of Ophthalmology, Goethe University Frankfurt, Frankfurt am Main, Germany; 2Vance Thompson Vision, Sioux Falls, SD, USA; 3Alcon Vision LLC, Fort Worth, TX, USA; 4PersonalEYES, Sydney ...
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A comparison of wavefront-optimized and wavefront-guided ablations
Current Opinion in Ophthalmology, 2009Optimized aspherical as well as custom wavefront-guided treatments attempt to reduce the induction of visually disturbing aberrations than can occur with conventional spherocylindrical corneal ablation. This review highlights a comparison of the advances and limitations of the two treatments.Optimized aspherical as well as wavefront-guided corneal ...
Elliott H, Myrowitz, Roy S, Chuck
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A reference wavefront for wavefront sensing instruments
Workshop on Optical Fabrication and Testing, 1986A reference light source (RLS) was designed to allow the measurement and removal of system wavefront errors in wavefront sensing instruments. The wavefront of the RLS is produced by collimating and re-focussing the output of a laser diode onto a 1 micron pinhole aperture.
Lars A. Selberg, Bruce E. Truax
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Hybrid wavefront sensor for the fast detection of wavefront disturbances
Applied Optics, 2012Strongly aberrated wavefronts lead to inaccuracies and nonlinearities in holography-based modal wavefront sensing (HMWS). In this contribution, a low-resolution Shack-Hartmann sensor (LRSHS) is incorporated into HMWS via a compact holographic design to extend the dynamic range of HMWS.
Shihao, Dong +2 more
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Wavefront scatter and wavefront healing
The Journal of the Acoustical Society of America, 2001While acoustic scattering is essentially a time domain phenomenon, studies of scattering from objects in water, and from boundaries, have often concentrated on time-independent/cw descriptions. There are, however, critical aspects of the scattering problem which become evident only in the time domain.
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Fourier wavefront reconstruction with a pyramid wavefront sensor
Adaptive Optics Systems VI, 2018Using Fourier methods to reconstruct the phase measured by a wavefront sensor (WFS) can significantly re- duce the number of computations required, as well as easily enable predictive reconstruction methods based on knowledge of the adaptive optics system, atmospheric turbulence and wind profile. Previous work on Fourier re- construction has focused on
Bond, Charlotte +5 more
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Wavefront processing of radio-frequency wavefront data
Proceedings of the IEEE, 1984A class of special-purpose processors is described. These processors are for use in holographic imaging systems that utilize electromagnetic waves with radio frequencies. The systems, which operate in very nearly real time, consist of arrays of receiving antennas with a receiver at each antenna.
G.P. Tricoles, E.E. Brundege, E.L. Rope
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Applications of wavefront technology
Journal of Cataract and Refractive Surgery, 2012This review of wavefront technology looks at 2 major aspects. The first is the basics and principles of the optics of the eye, how to decompose the wavefront in a more adequate way for interpretation, and how these aberrations affect the visual acuity. It also addresses the diversity and complexity of wavefront sensors; how these devices transform the ...
Glauco Reggiani, Mello +4 more
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Wavefront Aberration and Wavefront Shape
2016The study of optical systems may be considered from two different perspectives, namely systems analysis and systems design, respectively.
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