In this photograph, doctoral student Joseph Cho’s hand is pictured along with a multidirectional perfect paraxial cloak comprised of four lenses. From a continuous range of viewing angles, the hand remains cloaked and the grid is seen through the device, matching the background located on the wall approximately 2 meters away in color, spacing, shifts, and magnification. The edges of the optics can be seen because this lens group was a small-angle paraxial cloak. The artifact of seeing the edges of the cloak can be reduced by using larger optics and at a longer ...
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