Full Content is available to subscribers

Subscribe/Learn More  >

Using the Modeshapes of a Vibrating PVDF Film as a Deformable Mirror Surface

[+] Author Affiliations
Murat Tahtali, Andrew J. Lambert, Zheng Zhitao, Don Fraser

UNSW@ADFA, Canberra, Australia

Paper No. CANEUS2006-11032, pp. 31-36; 6 pages
  • CANEUS 2006: MNT for Aerospace Applications
  • CANEUS2006: MNT for Aerospace Applications
  • Toulouse, France, August 27–September 1, 2006
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4254-1 | eISBN: 0-7918-3787-4
  • Copyright © 2006 by ASME


One of the challenges of all telescope imaging is the adverse effects of atmospheric turbulence in the optical path. These effects can be mitigated by the use of Adaptive Optics (AO) and Digital Image Processing (DIP). However, it is always desirable to correct as much as possible with AO prior to attempt any further corrections with DIP as more of the original signal can be retained by optical means. The central element of a modern adaptive optics system is its deformable mirror which can be considered as a micro-mechanical device. The surface curvature is made to vary by means of an array of actuators of different technologies and a bank of sophisticated control circuitry. The basic idea is to reproduce the opposite aberration on the mirror surface as a combination of fundamental deformations described by a set of polynomials called Zernike polynomials. The plots of these Zernike polynomials bear great resemblance to the modeshapes of a circular membrane under tension. In this paper, we are presenting encouraging test results of a vibrating PVDF (Polyvinylidene fluoride) film at its natural frequencies. The possibility of using inexpensive PVDF deformable mirrors has the prospect of increasing the speed as well as the affordability of adaptive optics systems while reducing their complexity. An emerging field of application for lightweight and low cost AO systems is the next generation of micro UAVs (Unmanned Aerial Vehicles).

Copyright © 2006 by ASME
Topics: Mirrors



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In