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14 May 2019 Aquatic information display and its applications for behavioral biology experiments
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Abstract
This paper proposes a new display that forms information screen in water or around a water tank. The information screen is formed with aerial imaging by retro-reflection (AIRR). AIRR employs three elements, which are a light source, a beam splitter, and a retro-reflector. The retro-reflector converges the retro-reflected lights to the plane-symmetrical position of the light source regarding the beam splitter. AIRR features a wide viewing angle, a large-size scalability, and a low cost with mass-productive process. An information screen inside a water tank can be formed with the following three types of optical systems. In Type I, we place a beam splitter above the water surface to reflect lights from the light source and transmit the retro-reflected lights. Type II uses the water surface as a beam splitter because the intersection between water and air causes reflection and refraction. Type III uses the bottom of the water tank as a beam splitter. Preliminary experimental results show that Type III forms a clearer and stable image inside water. By use of a coneshaped beam splitter and a flat panel display, we have formed an omni-directional information screen that surrounds a cylindrical water tank. We have utilized this omni-directional display to investigate optomotor reaction of fish for the visual stimuli. A medaka in the water tank followed to the rotating stripes shown on the surrounding screen. Furthermore, a medaka reacted to a biological motion image that was shown in water. Thus, the proposed display is useful for behavioral biology experiments.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hirotsugu Yamamoto, Erina Abe, Masaki Yasugi, Eiji Watanabe, and Hideaki Takeuchi "Aquatic information display and its applications for behavioral biology experiments", Proc. SPIE 10997, Three-Dimensional Imaging, Visualization, and Display 2019, 1099707 (14 May 2019); https://doi.org/10.1117/12.2521225
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