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Design considerations for two-dimensional symmetric bootlace lenses

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2 Author(s)
M. Kales ; U.S. Naval Research Lab., Washington, DC, USA ; R. Brown

It is generally known that a symmetrical bootlace lens having two pairs of conjugate foci can be designed. Additionally, there is a bootlace lens, the R-2R, which focuses perfectly at infinitely many points. It is shown in this paper that the R-2R is unique; there are no other perfect bootlace lenses and, in fact, no others with more than two pairs of conjugate off-axis foci.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:13 ,  Issue: 4 )