Vibrating membrane mirror concept for adaptive optics

A novel vibrating membrane mirror (VMM) based on the mechanical concepts of vibrating membranes is proposed. This mirror has the capability of being a proper alternative for the traditional optical mirrors. A finite element model of membrane mirror is developed using ANSYS Workbench and its dynamic characteristics extracted to compare with main wavefront aberrations. The similarities between normal modes of a vibrating membrane and Zernike polynomials, which approximate mathematically distorted wavefront, are investigated and the degree of similarities is calculated using RMSE criteria and effective radius. To eliminate unwelcome vibrations of actuators, the excitation ring has been introduced.

[1]  R. Grosso,et al.  The membrane mirror as an adaptive optical element , 1977 .

[2]  D. R. Iskander,et al.  Zernike vs. Bessel circular functions in visual optics , 2013, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[3]  J. Hardy,et al.  Adaptive Optics for Astronomical Telescopes , 1998 .

[4]  R. Noll.  Zernike polynomials and atmospheric turbulence , 1976 .

[5]  Amita Gupta,et al.  MEMS deformable mirrors: technology and applications , 2012, Other Conferences.

[6]  Pablo Artal,et al.  Membrane deformable mirror for adaptive optics: performance limits in visual optics. , 2003, Optics express.

[7]  F. A. Moslehy,et al.  Modal testing using two speakers and application to the space shuttle tiles bond evaluation , 1997 .

[8]  Masanori Iye,et al.  Membrane deformable mirror for SUBARU adaptive optics , 1994, Astronomical Telescopes and Instrumentation.

[9]  Horace W. Babcock,et al.  THE POSSIBILITY OF COMPENSATING ASTRONOMICAL SEEING , 1953 .

[10]  Guo-Dung John Su,et al.  Design and fabrication of a large-stroke MEMS deformable mirror for wavefront control , 2011 .

[11]  P.-Y. Madec.  Overview of deformable mirror technologies for adaptive optics and astronomy , 2012, Other Conferences.

[12]  Allan Wirth,et al.  High-bias membrane mirror , 1992, Other Conferences.

[13]  H. Zappe,et al.  Deformable Polymer Adaptive Optical Mirrors , 2008, Journal of Microelectromechanical Systems.

[14]  Andrew Lambert,et al.  Using the Modeshapes of a Vibrating PVDF Film as a Deformable Mirror Surface , 2006 .

[15]  Martin Yellin,et al.  Using Membrane Mirrors In Adaptive Optics , 1976, Other Conferences.

[16]  J. Y. Wang,et al.  Wave-front interpretation with Zernike polynomials. , 1980, Applied optics.

[17]  Singiresu S. Rao.  Vibration of Continuous Systems , 2019 .

[18]  David L. Dickensheets,et al.  Electrostatic-Pneumatic Membrane Mirror With Positive or Negative Variable Optical Power , 2013, Journal of Microelectromechanical Systems.