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Tomagraphic wavefront correction for the LSST
SPIE Proceedings, 2006The Large Synoptic Survey Telescope (LSST) is a three mirror modified Paul-Baker design with an 8.4m primary, a 3.4m secondary, and a 5.0m tertiary followed by a 3-element refractive corrector producing a 3.5 degree field of view. This design produces image diameters of
Phillion, D. W. +4 more
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Wavefront correction through image sharpness maximisation
SPIE Proceedings, 2005A key component of any adaptive optics system (AO) for the correction of wavefront aberrations, is the wavefront sensor(WFS). Many systems operate in a mode where a WFS measures the aberrations present in the incoming beam. The required corrections are determined and applied by the wavefront corrector - often a deformable mirror (DM).
L. P. Murray, J. C. Dainty, E. Daly
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Correction of large amplitude wavefront aberrations
SPIE Proceedings, 2005Recently, a number of research groups around the world have developed ophthalmic instruments capable of in vivo diffraction limited imaging of the human retina. Adaptive optics was used in these systems to compensate for the optical aberrations of the eye and provide high contrast, high resolution images. Such compensation uses a wavefront sensor and a
S. A. Cornelissen +5 more
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Wavefront correction by liquid-crystal devices
Soviet Journal of Quantum Electronics, 1986An experimental investigation was made of the use of liquid-crystal phase correctors of wavefronts. Prototype correctors were prepared with independent addressing of the elements and these were found capable of compensating distortions of wavefronts of radiation of wavelengths 0.5–6μ.
A A Vasil'ev +2 more
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Fundamentals of Ocular Wavefront Correction
2009For vision correction, the key is to help patients achieve good visual performance. In most cases, this means good visual acuity and good contrast sensitivity. The ocular aberrations can be considered as a combination of the spherocylindrical aberrations and irregular aberrations.
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A discussion of two wavefront aberration correction procedures
Ultrasonic Imaging, 1992This review paper discusses the basic properties of two adaptive signal processing procedures for dealing with weak scattering in a phased array transducer system. A fundamental improvement in the lateral resolution of ultrasonic echo scanners will result if the weight vector of a large phased array transducer can be modified to account for distortion
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EXACT WAVEFRONT CORRECTION IN ADAPTIVE OPTICS
IFAC Proceedings Volumes, 2005Abstract In this work we consider an adaptive optical system in which a deformable mirror is controlled to compensate for random wavefront disturbances. For most systems of this type, the shape of the mirror is taken as a linear function of the wavefront error, leading to satisfactory results in linear regimes.
Pierre Le Gall, Lionel Rosier
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Liquid deformable mirror for high-order wavefront correction
Optics Letters, 2006We propose and demonstrate a novel liquid deformable mirror, based on electrocapillary actuation, for high-order wavefront correction. The device consists of a two-dimensional array of vertically oriented microchannels filled with two immiscible liquids, an aqueous electrolyte, and a viscous dielectric liquid, where the dielectric liquid overfills the ...
Vuelban, E.M. (author) +2 more
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Analyzing multi-conjugate wavefront shaping corrections
Optica Imaging Congress 2025 (3D, DH, COSI, IS, pcAOP,RadIT)Multi-conjugate wavefront shaping systems attempt to correct scattering through a volumetric aberration using multiple planar corrections. We study how many layers are needed and what field-of-view can be corrected with a small number of layers.
Marina Alterman, Anat Levin
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