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公开(公告)号:AU729511B2
公开(公告)日:2001-02-01
申请号:AU4212197
申请日:1997-09-09
Applicant: ESSILOR INT
Inventor: BAUDART THIERRY , BOURDONCLE BERNARD , LALOUX THIERRY , PEDRONO CLAUDE , ROSSIER CLAIRE
Abstract: The invention concerns a set of progressive multifocal opthalmic lenses, each having a first progressive multifocal surface and a second surface preferably spherical. It proposes to define the set of lenses with regard to the optical characteristics of the lenses, and particularly wearer power and oblique astigmatism, in worn conditions. For this purpose, the invention defines an ergorama associating with each sight direction in worn conditions a target object point, and a given power. This ergorama supplies a power target for a definition by optimisation of the lenses, and is used in a radii plotting programme for calculating the optical characteristics during optimisation. The set of lenses has substantially identical optical performances for a given addition, whatever the power of the far vision reference point.
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公开(公告)号:AU8934598A
公开(公告)日:1999-05-06
申请号:AU8934598
申请日:1998-10-15
Applicant: ESSILOR INT
Inventor: BAUDART THIERRY , MIEGE CHRISTIAN , AHSBAHS FRANCOISE
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公开(公告)号:FR2753805B1
公开(公告)日:1998-11-13
申请号:FR9611478
申请日:1996-09-20
Applicant: ESSILOR INT
Inventor: BAUDART THIERRY , BOURDONCLE BERNARD , LALOUX THIERRY , PEDRONO CLAUDE , ROSSIER CLAIRE
Abstract: L'invention a pour objet un jeu de lentilles ophtalmiques multifocales progressives, présentant chacune une première surface multifocale progressive et une deuxième surface de préférence sphérique. Elle propose de définir le jeu de lentilles en considérant les caractéristiques optiques des lentilles, et notamment la puissance porteur et l'astigmatisme oblique, dans les conditions du porté. Pour cela, l'invention définit un ergorama associant à chaque direction du regard dans les conditions du porté un point objet visé, et une puissance donnée. Cet ergorama fournit une cible de puissance pour une définition par optimisation des lentilles, et est utilisé dans un programme de tracé de rayons pour calculer les caractéristiques optiques au cours de l'optimisation. Le jeu de lentilles selon l'invention présente des performances optiques sensiblement identiques pour une addition donnée, quelle que soit la puissance au point de référence de la vision de loin.
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公开(公告)号:FR2753805A1
公开(公告)日:1998-03-27
申请号:FR9611478
申请日:1996-09-20
Applicant: ESSILOR INT
Inventor: BAUDART THIERRY , BOURDONCLE BERNARD , LALOUX THIERRY , PEDRONO CLAUDE , ROSSIER CLAIRE
Abstract: The invention concerns a set of progressive multifocal ophthalmic lenses, each having a first progressive multifocal surface and a second surface preferably spherical. It proposes to define the set of lenses with regard to the optical characteristics of the lenses, and particularly wearer power and oblique astigmatism, in worn conditions. For this purpose, the invention defines an ergorama associating with each sight direction in worn conditions a target object point, and a given power. This ergorama supplies a power target for a definition by optimisation of the lenses, and is used in a radii plotting programme for calculating the optical characteristics during optimisation. The set of lenses has substantially identical optical performances for a given addition, whatever the power of the far vision reference point.
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公开(公告)号:FR2733328B1
公开(公告)日:1997-06-13
申请号:FR9504800
申请日:1995-04-21
Applicant: ESSILOR INT
Inventor: AHSBAHS FRANCOISE , BAUDART THIERRY , LE SAUX GILLES
Abstract: The lens has an aspherical surface (S) with a distant vision zone (VL), a close vision zone (VP) and an intermediate vision zone (VI), with a main progression meridian (MM') passing through the three zones. The three vision zones (VL, VP, VI) are separated by isocylindrical lines, and the distant vision zone has a sector angle of at least 145 degrees. A line bisecting the angle forms an angle of less than 5 degrees, and pref under 2 degrees with a vertical.
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