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Multi-angle observation scheme for bubbles and droplets

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Abstract

The split-screen imaging technique, in which the field of view of a single video/still camera is divided into two (or more) regions, is one of the techniques for observing, using a single camera, liquid droplets, bubbles or particles translating in another fluid from two (or more) different directions. A drawback of the split-screen imaging technique is that it generally requires a longer optical path than the ordinary multi-camera technique that allots each view axis to each of two (or more) synchronized cameras. This study presents an optical arrangement that minimizes the optical path for the two-directional split-screen imaging so as to allow the use of a camera lens with a short working distance. Its modification configured for the three-directional split-screen imaging of translating bubbles or drops is also presented.

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Acknowledgments

This study was supported by a Grant-in-Aid for Scientific Research (C) from the Japan Society for the Promotion of Science (Grant no. 21560202) and Financial Assistance for Scientific Research Projects from the Suzuki Foundation. We thank Prof. Noel T. Clemens, The University of Texas at Austin, for his helpful comment on the literature about the split-screen imaging technique. We also thank the reviewers of this manuscript for their useful comments.

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Authors and Affiliations

  1. Department of Technology Education, Tokyo Gakugei University, 4-1-1 Nukuikitamachi, Koganei, Tokyo, 184-8501, Japan

    Takaaki Mochizuki

  2. Department of Mechanical Engineering, Tohoku Polytechnic College, 26 Aza-Hagisawatsuchihashi, Tsukidate, Kurihara, Miyagi, 987-2223, Japan

    Hiromi Sato

  3. Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan

    Yasuhiko H. Mori

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  1. Takaaki Mochizuki
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  2. Hiromi Sato
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  3. Yasuhiko H. Mori
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Correspondence to Takaaki Mochizuki.

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Mochizuki, T., Sato, H. & Mori, Y.H. Multi-angle observation scheme for bubbles and droplets. J Vis 15, 125–137 (2012). https://doi.org/10.1007/s12650-011-0120-z

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