Optics

Read e-book online Adaptive Optics for Industry and Medicine: Proceedings of PDF

By Ulrich Wittrock

ISBN-10: 3540239782

ISBN-13: 9783540239789

This publication treats the improvement and alertness of adaptive optics for and medication. The contributions describe lately constructed parts for adaptive-optics platforms comparable to deformable mirrors, wavefront sensors, and replicate drivers in addition to whole adaptive optical platforms and their functions in and drugs. purposes 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 foreign 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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Additional resources for Adaptive Optics for Industry and Medicine: Proceedings of the 4th International Workshop, Münster, Germany, Oct. 19-24, 2003

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Comm. 192, 91 (2001) 10. A. Hastings: The Art of Analog Layout (Prentice-Hall, Saddle Brook, NJ 2001) 11. M. Loktev, G. Vdovin, A. Naumov, C. Saunter, S. Kotova, I. Guralnik: Control of a modal liquid crystal wavefront corrector. R. W. ): Adaptive Optics for Industry and Medicine (Starline Printing 2002), pp. 145–153 5 Aberration Compensation Using Nematic Liquid Crystals S. Somalingam1 , M. Hain1 , T. Tschudi1 , J. Knittel2 , and H. Richter2 1 2 Technische Universit¨ at Darmstadt Hochschulstr.

In particular, it is possible to replace the continuous resistive layer by a matrix of pixels connected in a network by discrete IC resistors, as shown in Fig. 3. Driving signals should be applied only to some pixels in this network; we can call them active and other pixels passive. The network of resistors provides gradual voltage variation between the pixels. Such a combination of zonal and modal approaches should result in a modulator with large amount of pixels driven by much smaller number of control channels.

In Fig. 7, the normalised profile of the 2nd iteration mirror is plotted together with those for the 1st iteration mirror and an unsupported, or totally free, mirror. 2. From Fig. 7, it can be seen that the 2nd iteration profile provides a closer fit to the ideal, unsupported case. 2 it can be seen that the resonant frequency is below that predicted. The two more likely reasons for this are: 1. The effect of the adhesive is more significant than we expected, and is causing a lower resonance. 2. The “easy” fit into the mount has meant that less support is being supplied than expected to the mirror.

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


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