Optical Review

, Volume 22, Issue 1, pp 19–24 | Cite as

Compact wide-field-of-view imager with a designed disordered medium

  • Tomoya Nakamura
  • Ryoichi Horisaki
  • Jun Tanida
Regular Paper


Disordered media have been exploited for realizing compact lensless imagers and spectroscopes. However, random scattering causes significant loss of the light energy acquirable by a sensor. Here, we present a compact, wide-field-of-view (wide-FOV) imager in which the usable light energy is increased using a designed disordered medium. The density of scattering air holes in a glass is spatially distributed so as to achieve an effective graded index, which guides light from a wide-FOV toward a sensor. Based on numerical experiments, we demonstrated brighter wide-FOV imaging than an imager using a conventional random medium.


Computational imaging Wide field-of-view Disordered medium Lensless imaging 



This research was supported by Grant-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science (JSPS).


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Copyright information

© The Optical Society of Japan 2015

Authors and Affiliations

  • Tomoya Nakamura
    • 1
    • 2
  • Ryoichi Horisaki
    • 1
  • Jun Tanida
    • 1
  1. 1.Department of Information and Physical Sciences, Graduate School of Information Science and TechnologyOsaka UniversitySuitaJapan
  2. 2.Research Fellow of the Japan Society for the Promotion of ScienceTokyoJapan

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