Luneberg lens and method of constructing same

Details Luneberg lens and method of constructing same Luneberg lens and method of constructing same

1995-08-25

1997-10-14

Epps, Georgia Y.

Optical: systems and elements

Lens

With graded refractive index

359664, 359720, 343911R, 343911L, G02B 900, G02B 302, H01Q 1508

Patent

active

056777965

ABSTRACT:
An improved spherical gradient lens and a method of fabricating same. A uniform sphere of a material such as high density irradiated polystyrene or a methylpentene copolymer in the polyolefin family having a uniform relative dielectric constant is provided. A plurality of radially extending holes are formed therein, for example by drilling, the holes having a predetermined cross sectional geometry along axes extending radially from the center of the sphere. The geometry of holes is selected to control the resultant local density of material, and thus the relative dielectric constant as a function of distance from the center of the sphere. Hole diameters are chosen so as to be small compared to the shortest wavelength of interest with which the lens will be used.

REFERENCES:
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