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US3914769A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for fabricating Luneberg lens

Assignee: Individual
•
Filing: 1974-01-14
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Granted: 1975-10-21
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Expires: 1994-01-14
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Abstract

Abstract A method for fabricating a Luneberg lens is disclosed. A plurality of cubes are secured together to form a sphere. The sphere is then cut into thin slices about one axis and the slices are reassembled out of registry in the angular coordinate. The sphere is then sliced along the second axis and these slices are again reassembled out of registry in the angular coordinate. Finally, the sphere is cut into small slices about the third axis and these slices are then again reassembled out of registry in the angular coordinate. This method of fabricating a Luneberg lens results in a reduction in the size of the inhomogeneities by a large degree; and therefore, results in a large improvement in the high frequency characteristics of the Luneberg lens.

Inventors

  • 👤 William J Andrews

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 19:45
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q15/08

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 81 words
A method for constructing a Luneberg lens comprising the following steps: a. cutting a batch of LunEberg lens material into cubes; b. determining the indices of refraction of said cubes; c. cementing said cubes together in accordance with their respective indices of refraction to form a first approximation of a Luneberg lens sphere; d. cutting said sphere into thin slices along a first axis; and e. reassembling said slices out of registry in an angular coordinate to again form said sphere.
Claim 2
Independent Claim 81 words
A method for constructing a Luneberg lens comprising the following steps: a. cutting a batch of LunEberg lens material into cubes; b. determining the indices of refraction of said cubes; c. cementing said cubes together in accordance with their respective indices of refraction to form a first approximation of a Luneberg lens sphere; d. cutting said sphere into thin slices along a first axis; and e. reassembling said slices out of registry in an angular coordinate to again form said sphere.
Claim 3
Dependent Claim 48 words
The method as described in claim 1 wherein said sphere formed by said reassembled slices is again cut into thin slices along a second axis and wherein said slices cut from said reassembled sphere are reassembled out of registry in an angular coordinate to again form said sphere.
Claim 4
Dependent Claim 54 words
The method as described in claim 2 wherein said sphere formed by reassembling said slices cut from along said second axis is again cut into thin slices along its third axis and said thin slices cut along said third axis are reassembled out of registry in an angular coordinate to again form said sphere.
Claim 5
Dependent Claim 17 words
The method as described in claim 3 wherein said cubes are cut from batches of foam-like material.
Claim 6
Dependent Claim 36 words
The method as described in claim 3 wherein said slices cut along said first axis, said slices cut along said second axis, and said slices cut along said third axis are all of approximately equal thickness.
Claim 7
Dependent Claim 24 words
The method as described in claim 5 wherein said thickness of all said slices lies within the range of one-fourth inch to one-eighth inch.

References Cited (Backward Citations)

US3133285A Cited
US3255453A Cited
US3470561A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-20 1979-04-21 1979-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-20 1983-04-21 1983-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-20 1987-04-21 1987-10-21 $7700.00 Window Closed / Lapsed

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