Download Adaptive Optics for Industry and Medicine: Proceedings of by Ulrich Wittrock PDF

By Ulrich Wittrock

This publication treats the improvement and alertness of adaptive optics for and drugs. The contributions describe lately constructed parts for adaptive-optics structures equivalent to deformable mirrors, wavefront sensors, and replicate drivers in addition to entire adaptive optical structures and their purposes in and medication. functions diversity from laser-beam forming and adaptive aberration correction for high-power lasers to retinal imaging in ophthalmology. The contributions are in keeping with shows made on the 4th overseas Workshop on Adaptive Optics in and drugs which happened in Münster, Germany, in October 2003. This hugely winning sequence of workshops on adaptive optics all started in 1997 and keeps with the 5th workshop in Beijing in 2005.

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Extra info for Adaptive Optics for Industry and Medicine: Proceedings of the 4th International Workshop, Münster, Germany, Oct. 19-24, 2003

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Y. : Modal liquid crystal wavefront corrector. Opt. URI=OPEX-10-22-1258 5. P. Kotova, P. : Technology and electro-optical properties of modal liquid crystal wavefront correctors. J. Opt. A: Pure Appl. Opt. 5, S231 (2003) 6. M. Loktev, G. Vdovin, I. Guralnik: Operation modes of a liquid crystal modal wavefront corrector. Appl. Opt. 43, 2209 (2004) 7. V. R. P. Y. F. Naumov: Liquid crystal lenses with programmable focal distance. Part I: Theory. Part II: Experiment. Quant. Electr. 29, 256 (1999) 8.

Vdovin1,2 , M. Loktev1 , and X. Zhang1 1 2 Delft University of Technology, EEMCS, Electronic Instrumentation Laboratory Mekelweg 4, 2628 CD Delft, The Netherlands OKO Technologies PO Box 581, 2600 AN Delft, The Netherlands Summary. We consider using liquid crystal adaptive lenses to correct the accommodation loss and higher-order aberrations of the human eye. In this configuration, the adaptive lens is embedded into the eye lens implant and can be controlled through a wireless inductive link. In this work we experimentally demonstrate a wireless control of a liquid crystal adaptive lens in a wide range of its focusing power by using two coupled coils with the primary coil driven from a low-voltage source through a switching control circuit and the secondary coil used to drive the lens.

Consider the objective lens could only be corrected to focus on one data layer perfectly. A mechanical repositioning of the lens is not favorable because of abrasion, inertia, complexity and the limited space in a pickup system. 2 Our Approach One method to compensate spherical aberration is to introduce inverse spherical wavefront by placing an adequate LC device into the beam path. This operation changes the effective working distance of the objective lens and can partially compensate the spherical aberration caused by the cover layer thickness variation.

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