DE69212829T2 - METHOD FOR PRODUCING LENSES WITH VARIABLE BREAKING INDEX - Google Patents

METHOD FOR PRODUCING LENSES WITH VARIABLE BREAKING INDEX

Info

Publication number
DE69212829T2
DE69212829T2 DE69212829T DE69212829T DE69212829T2 DE 69212829 T2 DE69212829 T2 DE 69212829T2 DE 69212829 T DE69212829 T DE 69212829T DE 69212829 T DE69212829 T DE 69212829T DE 69212829 T2 DE69212829 T2 DE 69212829T2
Authority
DE
Germany
Prior art keywords
lens
apexes
refraction index
parts
symmetry point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69212829T
Other languages
German (de)
Other versions
DE69212829D1 (en
Inventor
David Harrison
Masahiro Fujimoto
Gerhard Maier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technicolor SA
Original Assignee
Thomson Multimedia SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Multimedia SA filed Critical Thomson Multimedia SA
Publication of DE69212829D1 publication Critical patent/DE69212829D1/en
Application granted granted Critical
Publication of DE69212829T2 publication Critical patent/DE69212829T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material

Abstract

This invention presents a process for the production of a lens with a given variable refraction index by fixing together several parts, at least some of them have a variable refraction index. The realization of the desired refraction index of the parts can be achieved by compressing dielectric material of a first shape into its final shape or by a doping or a mixing process respectively. Outer parts, which extend to the outer surface of the lens to be produced, have a pyramid-like shape with a pointed or truncated apex respectively. In the first case the apexes of the outer parts meet in the symmetry point of said lens; in the latter case a center part is used which is located around said symmetry point. It is also possible that some of the outer parts used have pointed apexes and the rest of them has got truncated apexes. In this case a center part used is easy to fix near the symmetry point of the lens. If dielectric material is taken, the lens to be produced can preferably be used as part of microwave antenna system.
DE69212829T 1991-06-03 1992-05-25 METHOD FOR PRODUCING LENSES WITH VARIABLE BREAKING INDEX Expired - Fee Related DE69212829T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP91401444 1991-06-03
PCT/EP1992/001168 WO1992022846A2 (en) 1991-06-03 1992-05-25 Process for the production of lenses with a variable refraction index

Publications (2)

Publication Number Publication Date
DE69212829D1 DE69212829D1 (en) 1996-09-19
DE69212829T2 true DE69212829T2 (en) 1997-02-27

Family

ID=8208578

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69212829T Expired - Fee Related DE69212829T2 (en) 1991-06-03 1992-05-25 METHOD FOR PRODUCING LENSES WITH VARIABLE BREAKING INDEX

Country Status (8)

Country Link
EP (1) EP0587810B1 (en)
JP (1) JPH06507735A (en)
KR (1) KR940701589A (en)
AT (1) ATE141445T1 (en)
CA (1) CA2109936A1 (en)
DE (1) DE69212829T2 (en)
ES (1) ES2090677T3 (en)
WO (1) WO1992022846A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7301504B2 (en) 2004-07-14 2007-11-27 Ems Technologies, Inc. Mechanical scanning feed assembly for a spherical lens antenna

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761141A (en) * 1951-08-28 1956-08-28 Malcolm W P Strandberg Continuously varying dielectric constant electromagnetic lens
US3274668A (en) * 1965-08-02 1966-09-27 Armstrong Cork Co Method of making three-dimensional dielectric lens
US3133285A (en) * 1963-01-14 1964-05-12 Gen Electric Spherical luneberg lens composed of a plurality of pyramidal sectors each having a graded dielectric constant

Also Published As

Publication number Publication date
ES2090677T3 (en) 1996-10-16
WO1992022846A2 (en) 1992-12-23
EP0587810A1 (en) 1994-03-23
WO1992022846A3 (en) 1993-01-21
EP0587810B1 (en) 1996-08-14
ATE141445T1 (en) 1996-08-15
DE69212829D1 (en) 1996-09-19
CA2109936A1 (en) 1992-12-23
JPH06507735A (en) 1994-09-01
KR940701589A (en) 1994-05-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee