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Download Adaptive Optics for Industry and Medicine: Proceedings of by G. Vdovin (auth.), Professor Dr. Ulrich Wittrock (eds.) PDF

By G. Vdovin (auth.), Professor Dr. Ulrich Wittrock (eds.)

This ebook treats the improvement and alertness of adaptive optics for and drugs. The contributions describe lately constructed elements for adaptive-optics structures reminiscent of deformable mirrors, wavefront sensors, and replicate drivers in addition to whole adaptive optical platforms and their purposes in and drugs. functions diversity from laser-beam forming and adaptive aberration correction for high-power lasers to retinal imaging in ophthalmology. The contributions are in response to shows made on the 4th overseas Workshop on Adaptive Optics in and medication which happened in Münster, Germany, in October 2003. This hugely profitable sequence of workshops on adaptive optics begun in 1997 and maintains 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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M. Ellis: Low-Cost Bimorph Mirrors in Adaptive Optics. PhD Thesis, IPL 3 Deformable Mirrors with Thermal Actuators G. Vdovin1,2 and M. Loktev1 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. Adaptive optics is applied in lasers, scientific instrumentation, ultrafast sciences, ophthalmology and material processing. For successful use in these applications, the deformable mirrors must be simple, inexpensive, reliable and efficient.

Estimated elongation ∆ of a resistor with copper leads under assumption of ∆t = 100 K◦ change of the lead temperature. Here Ll = 1 cm is the lead length, α = 16 · 10−6 is the coefficient of thermal expansion of copper. The right picture shows simplified schematic of a thermal deformable mirror change of the length of a resistor. An example of the expected elongation is given in Fig. 1. The main advantage of the resistor as a thermal actuator is its very low cost. The price of a resistor can be as low as one cent, and it can provide elongation of tens of micrometers.

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. M. Pham, T. R. M. Sarro: Electrical characteristics of plasma-enhanced chemical vapor deposited silicon carbide thin films.

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