• DocumentCode
    3667344
  • Title

    Magnetically-actuated MEMS cat´s eye retroreflectors for optical identification

  • Author

    Tzu-yu Chen;Chih-chieh Chang;Shao-an Chien;Nai-wen Chang;Jui-che Tsai

  • Author_Institution
    Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We present a MEMS tunable cat´s eye retroreflector consisting of a rotational concave reflecting micromirror which provides the modulation of the optical retroreflection intensity. Magnetic beads are attached to this rotatable unit to enable magnetic actuation. The magnetically-actuated mirror achieves a large tilt angle. The tilt angle of the concave micromirror of the cay´s eye retroreflector can change from 0° to 12°, with the retroreflection efficiency varying from 19% to 5%.
  • Keywords
    "Magnetic resonance imaging","Optical reflection","Mirrors","Magnetic domains","Optical imaging","Optical scattering","Micromechanical devices"
  • Publisher
    ieee
  • Conference_Titel
    Optical MEMS and Nanophotonics (OMN), 2015 International Conference on
  • ISSN
    2160-5033
  • Print_ISBN
    978-1-4673-6834-6
  • Electronic_ISBN
    2160-5041
  • Type

    conf

  • DOI
    10.1109/OMN.2015.7288848
  • Filename
    7288848
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3667344