Page 226 - Optofluidics Fundamentals, Devices, and Applications
P. 226

CHAPTER 9


                                    Bio-Inspired Fluidic



                                     Lenses for Imaging


                                             and Integrated


                                                             Optics






               Frank S. Tsai, Jessica Godin, Yu-Hwa Lo
               Electrical and Computer Engineering, Jacobs School of Engineering, University
               of California at San Diego
               Sung Hwan Cho
               Materials Science and Engineering Program, Jacobs School of Engineering,
               University of California at San Diego
               Wen Qiao

               Electrical and Computer Engineering, Jacobs School of Engineering, University
               of California at San Diego





                      ne can find a natural connection between optics and fluidics
                      in animal vision.  Animal eyes, both compound eyes and
               Ocamera-like eyes, are great examples of using fluidic media
               to form images. Although beyond the scope of this chapter, it is inter-
               esting to ponder why nature selects lenses of tunable shape for vision
               accommodation, rather than varying the spacing between the lens
               and retina. The concept similar to the latter approach (i.e., change of
               spacing between lenses to change the focal length of an optical
               system) has been used by all human-designed optical systems until
               recently.


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