Modified luneberg lens for defocused source
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A spherical Luneberg lens has the property of focusing the rays from a point source on the surface of the lens into a collimated beam on the diametrically opposite side of the lens. In microwave applications a point source on the surface of the lens is usually not obtained. Curves are given for the required index of refraction for a modified Luneberg lens which possesses the same collimating property for a point source located at a small distance outside of the lens.
Published in:
Antennas and Propagation, IRE Transactions on
(Volume:8
,
Issue:
1
)
Date of Publication: January 1960