© 2017 by Image Acoustics, Inc.

    John L. Butler, Ph.D. is President and Chief Scientist at Image Acoustics, Inc. He has had
    over forty years of both practical and theoretical experience in the design and analysis of
    underwater sound transducers. He has consulted to a number of underwater acoustics firms and
    has also taught courses in acoustics at Northeastern University, Naval Air Development Center,
    Raytheon Company, General Instrument Corporation, Harris Transducer Products, Hazeltine
    Corporation (now Ultra Ocean Systems, Inc.), Massa Products Corporation, Etrema Products,
    Plessey Australia, and Lund Institute of Technology, Sweden. He holds over thirty patents and
    has presented or published well over thirty-five papers on electro-acoustics transducers. In 1977
    he was elected Fellow of the Acoustical Society of America. His education includes: Ph. D.,
    Northeastern University, Boston, MA, and Sc. M., Brown University, Providence, RI. His
    publications include the co-authored paper “A low frequency directional flextensional transducer
    and line array," J. Acoust. Soc. Am. 102, 308-314 (1997) and "A Fourier series solution for the
    radiation impedance of a finite cylinder," J. Acoust. Soc. Am., 104, 2773-2778 (1998), with
    Alexander L. Butler and “A tri-modal directional transducer,” J. Acoust. Soc. Am., 115, 658-665
    (2004) with Alexander L. Butler and Joseph A. Rice. He is coauthor with C. H. Sherman of the
    book “Transducers and Arrays for Underwater Sound,“ (Springer, NY, 2007).

    Alexander L. Butler is a Senior Engineer at Image Acoustics, Inc. and is an expert in transducer
    finite element modeling. He has over twenty-eight years of experience in transducer design,
    development and analysis and holds an M. S. in Applied Physics from University of
    Massachusetts. He has co-authored a number of papers on transducers in the Journal of the
    Acoustical Society of America and presented a number of papers at the Acoustical Society of
    America, U. S. Navy Workshop on Acoustic Transduction and Materials and Devices, and at
    MTS/IEEE Oceans conferences. He is co-inventor on “Single-sided electro-mechanical
    transduction apparatus,” U.S. Patent 6,654,316, Nov. 25, 2003, “Multimode synthesized beam
    transduction apparatus,” U. S. Patent, 6,734,604 B2, May 11, 2004 and “Multi Piston Electro-
    mechanical Transduction Apparatus,” U. S. Patent 7,292,503, B2 Nov. 6, 2007 with J. L. Butler.

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    Victoria Curtis is a Program Manager at Image Acoustics. She completed her B.A. at
    Northeastern University. Ms Curtis negotiates both government and commercial contracts and
    sees that all goals of the projects are met financially and in a timely manner. She has been
    Program Manager for a number of our projects and uses QuickBooks on a daily basis to keep
    track of the company’s finances. In addition to this she has taken classes in MATLAB, ATILA,
    ANSYS, Solidworks and Transducers and has participated in the design and development of
    Image transducers. She has worked with Image Acoustics since March 2007 creating and
    updating various transducer programs. Victoria is also our facilities security officer.

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    IMAGE ACOUSTICS, INC.