Achieving collimated illumination for wide-field depth-resolved optical imaging

POSTER

Abstract

Camera based wide field optical imaging allows for in vivo functional imaging of the brain. The benefits of this method include a larger sampling area, faster data acquisition and higher spatial resolution; however it is unable to resolve depth information. This issue may be resolved by employing multiple wavelengths in the imaging system. As a demonstration of principle, we are building an imaging system with two different wavelengths at 455 nm and 585 nm, respectively by employing light emitting diodes (LEDs). The beam of an LED diverges quickly, therefore the objective of my research was to attach a collimating lens to modify the beam and minimize the divergence. In order to achieve this, we investigated different types of collimating lens and found the optimal one that can collimate the beam. We will present radiation patterns of beams with and without collimating lens.

Authors

  • John Kaminsky

    Physics Department, John Carroll University

  • Eric Baer

    Pennsylvania State University, Lincoln University, NHMFL, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron, Wayne State University, Physics Department, John Carroll University, Case Western Reserve University, Marietta College, SciPrint.org, High Performance Technologies, Inc., Air Force Institute of Technology, Johannes-Gutenberg-Universit\"at, Mainz, Germany, Martin-Luther-Universit\"at, Halle, Germany, Northwestern University, Youngstown State University, Dept. of Polymer Science, The University of Akron, X-ray Science Division, Argonne National Laboratory, NIST Center for Neutron Research, Electrical Engineering, Youngs. State U., Macromolecular, Case Western Reserve U.

  • Eric Baer

    Pennsylvania State University, Lincoln University, NHMFL, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron, Wayne State University, Physics Department, John Carroll University, Case Western Reserve University, Marietta College, SciPrint.org, High Performance Technologies, Inc., Air Force Institute of Technology, Johannes-Gutenberg-Universit\"at, Mainz, Germany, Martin-Luther-Universit\"at, Halle, Germany, Northwestern University, Youngstown State University, Dept. of Polymer Science, The University of Akron, X-ray Science Division, Argonne National Laboratory, NIST Center for Neutron Research, Electrical Engineering, Youngs. State U., Macromolecular, Case Western Reserve U.

  • Peifang Tian

    Physics Department, John Carroll University, John Carroll University