LUNEBERG LENS AND ANTENNA DEVICE USING THE SAME

Title:

LUNEBERG LENS AND ANTENNA DEVICE USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2005/013420

Kind Code:

A1

Abstract:

A Luneberg lens composed of a combination of a plurality of lens parts has a problem in securing the combined state and good moisture proof property of the lens parts. A positional deviation of the lens parts not only causes a cost increase but also has an adverse effect on the electric performance. Further, entry of water molecules or moisture aggravates the electric performance. These problems are solved by a simple inexpensive method. A Luneberg lens in which a lens section (2) composed of a combination of lens parts of spherical shell and spherical shell-like resin foams is sealed by a synthetic resin film (3) which is formed along the surface of the lens section (2) and whose thickness is not more than 100 μm and whose specific dielectric constant is higher than that of the outermost layer of the lens section.

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Inventors:

KURODA MASATOSHI (JP)
KIMURA KOICHI (JP)

Application Number:

PCT/JP2004/010848

Publication Date:

February 10, 2005

Filing Date:

July 29, 2004

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
KURODA MASATOSHI (JP)
KIMURA KOICHI (JP)

International Classes:

H01Q15/08; H01Q19/10; (IPC1-7): H01Q15/08

Foreign References:

JPS62234405A	1987-10-14
JPH0722834A	1995-01-24
US6036893A	2000-03-14
JPH0730324A	1995-01-31
JPH03104402A	1991-05-01
US3917773A	1975-11-04
JPS50116259A	1975-09-11

Other References: