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公开(公告)号：DE69810455D1
公开(公告)日：2003-02-06
申请号：DE69810455
申请日：1998-03-26
Applicant: ESSILOR INT
Inventor： KOIKE YASUHIRO , CABEZA STEPHANE , GRAND-CLEMENT DIDIER
Abstract: The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n1 and a first Abbe number &ngr;1, a second transparent polymer, diffused into the first polymer in order to produce the radial gradient index and having a second refractive index n2, different than the first refractive index, and a second Abbe number &ngr;2, characterized in that it furthermore comprises an effective amount of an Abbe number modifier agent which reduces by at least 10%, preferably by at least 15%, and more preferably by at least 20%, the value of the Abbe number of that of the first or second polymer which has the refractive index with lower value.
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公开(公告)号：FR2762098B1
公开(公告)日：1999-05-21
申请号：FR9704427
申请日：1997-04-10
Applicant: ESSILOR INT
Inventor： CABEZA STEPHANE , GRAND CLEMENT DIDIER , KOIKE YASUHIRO
Abstract: The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n1 and a first Abbe number &ngr;1, a second transparent polymer, diffused into the first polymer in order to produce the radial gradient index and having a second refractive index n2, different than the first refractive index, and a second Abbe number &ngr;2, characterized in that it furthermore comprises an effective amount of an Abbe number modifier agent which reduces by at least 10%, preferably by at least 15%, and more preferably by at least 20%, the value of the Abbe number of that of the first or second polymer which has the refractive index with lower value.
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公开(公告)号：FR2762098A1
公开(公告)日：1998-10-16
申请号：FR9704427
申请日：1997-04-10
Applicant: ESSILOR INT
Inventor： CABEZA STEPHANE , GRAND CLEMENT DIDIER , KOIKE YASUHIRO
Abstract: The invention proposes a transparent article with a radial refractive index gradient comprising a matrix of a first transparent polymer material with a first refractive index n1, as well as a first Abbe number nu 1. A second transparent polymer material is diffused into the first polymer material to obtain the radial index gradient. The second material comprises a second refractive index n2, different from the first refractive index, as well as a second Abbe number nu 2. The invention is characterized in that it further comprises an effective quantity of a modification agent of the Abbe number, which lowers by at least 10 %, preferably 15 %, or better 20 % the value of the Abbe number of whichever of the first or second polymer materials has the lower refractive index. The application of the invention is the manufacture of contact lenses.
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公开(公告)号：DE69810455T2
公开(公告)日：2003-10-23
申请号：DE69810455
申请日：1998-03-26
Applicant: ESSILOR INT
Inventor： KOIKE YASUHIRO , CABEZA STEPHANE , GRAND-CLEMENT DIDIER
Abstract: The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n1 and a first Abbe number &ngr;1, a second transparent polymer, diffused into the first polymer in order to produce the radial gradient index and having a second refractive index n2, different than the first refractive index, and a second Abbe number &ngr;2, characterized in that it furthermore comprises an effective amount of an Abbe number modifier agent which reduces by at least 10%, preferably by at least 15%, and more preferably by at least 20%, the value of the Abbe number of that of the first or second polymer which has the refractive index with lower value.
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