Download e-book for iPad: Adaptive Optics for Industry and Medicine: Proceedings of by Christopher Dainty

By Christopher Dainty

ISBN-10: 1848161107

ISBN-13: 9781848161108

ISBN-10: 1848161115

ISBN-13: 9781848161115

This court cases quantity offers the very most up-to-date advancements in non-astronomical adaptive optics. This overseas workshop, the 6th in a biennial sequence, used to be the most important ever held and boasted major involvement by way of undefined. Adaptive optics is at the verge of getting used in lots of items; certainly, at this assembly, using adaptive optics in DVD gamers was once disclosed for the 1st time.

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Additional info for Adaptive Optics for Industry and Medicine: Proceedings of the Sixth International Workshop

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X p e r i ~ e n tsample al of the tiny mirror A laser beam often has significant number of low order aberrations, and mirror should have large stroke while reproducing them. Simultaneously, there are higher order aberrations, that have smaller amplitude, but quality of their reproducing is more crucial. It is very difficult to achieve simultaneously good quality and large amplitude with the use of only one PZT layer. The first step to solve this problem is the use of additional PZT layer with one large electrode, which occupies the whole PZT surface.

The module placed on the prototype base. 39 . Testing The dynamic response of the actuators is tested. Transfer functions of the actuators are measured using white noise input current with various dc-offsets (figure 7). I I I Figure 7. Bode-diagrams of act. #11 with various dcofi&. 025V). Figure 8. Measured and predicted current/ohmk losses of act. #11 over its stroke. 40 A mass-spring system is fit on these transfer functions. Characteristics such as resonance frequencies, force, stiffness, motor constant, current, dissipation and efficiency - all as function of the position of the actuator - have been determined.

3. The 427 actuator prototype In the prototype 7 of the modules are placed on a stable and stiff reference support structure. The modular design makes it possible to extend the mirror to very large numbers of actuators. Figure 6 shows the assembly of one grid and its placement on the prototype base. Figure 6. The module placed on the prototype base. 39 . Testing The dynamic response of the actuators is tested. Transfer functions of the actuators are measured using white noise input current with various dc-offsets (figure 7).

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Adaptive Optics for Industry and Medicine: Proceedings of the Sixth International Workshop by Christopher Dainty


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