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'Cloaking' device uses ordinary lenses to hide objects across range of angles

Doctoral student Joseph Choi is pictured with a multidirectional 'perfect paraxial' cloak using 4 lenses.

Doctoral student Joseph Choi is pictured with a multidirectional 'perfect paraxial' cloak using 4 lenses

"There've been many high tech approaches to cloaking and the basic idea behind these is to take light and have it pass around something as if it isn't there, often using high-tech or exotic materials," said John Howell, a professor of physics at the University of Rochester. Forgoing the specialized components, Howell and graduate student Joseph Choi developed a combination of four standard lenses that keeps the object hidden as the viewer moves up to several degrees away from the optimal viewing position.

"This is the first device that we kow of that can do three-dimentional, continuously multidirectional cloaking, which works for transmitting rays in the visible spectrum," said Choi, a PhD student at Rochester's Institute of Optics.

Here is the link to the official article!

http://www.rochester.edu/newscenter/watch-rochester-cloak-uses-ordinary-lenses-to-hide-objects-across-continuous-range-of-angles-70592/ 

Pioneer IGERT students Lenore Kubie and Rebecca Berman teach the next group of IGERT students ahead of their trip to Ghana.

Ghana class may

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