公开(公告)号：ES2155281T3

公开(公告)日：2001-05-01

申请号：ES98402533

申请日：1998-10-13

Applicant: ESSILOR INT

Inventor： CHAUVEAU JEAN-PIERRE ,  BOURDONCLE BERNARD ,  FRANCOIS SANDRINE

IPC: G02C7/06 ,  A61F2/16 ,  G02C7/02

公开(公告)号：CA2250615A1

公开(公告)日：1999-04-16

申请号：CA2250615

申请日：1998-10-15

Applicant: ESSILOR INT

Inventor： CHAVEAU JEAN-PIERRE ,  FRANCOIS SANDRINE ,  BOURDONCLE BERNARD

IPC: G02C7/06 ,  A61F2/16 ,  G02C7/02

Abstract: A multifocal ophthalmic lens comprising a far vision region, a near vision region an intermediate vision region and a main meridian of progression passing through these three regions is provided in which a principal length of progression, defined as a ratio between power addition and maximum slope of mean sphere along the meridian is less than 16 mm, sphere varies in a monotonous fashion as a function of angle on a 20 mm radius circle centered on a geometric center of the lens at both sides of said meridian, and in which the far vision region delimited in an upper portion of said lens by lines formed of points for which cylinder is equal to half power addition includes an angular sector having its origin at the geometric center of the lens with an included angle greater than 150.degree.. This provides a good distribution of isocylinder and ionosphere lines over the lens, ensuring progression is very gentle. .theta.

公开(公告)号：DE4414106A1

公开(公告)日：1994-10-27

申请号：DE4414106

申请日：1994-04-22

Applicant: ESSILOR INT

Inventor： ASHBAHS FRANCOIS ,  BOURDONCLE BERNARD ,  DELDALLE BENEDICTE ,  MIEGE CHRISTIAN

IPC: G02C7/02 ,  G02C7/06 ,  G02B3/10

Abstract: In a pair of progressive multifocal ophthalmic lenses, in which each lens has an aspherical surface comprising a far vision portion VLP, VLL a near vision portion VPP, VPL, an intermediate vision portion VIP, and a prime meridian of power progression passing through these three portions, the prime meridians of progression of the lenses are substantially symmetrical with respect to each other, and one of the lenses is more particularly dedicated to far vision and the other is more particularly dedicated to near vision, the lens dedicated to far vision having a more extensive far vision portion VLL than the far vision portion VLP of the lens dedicated to near vision, and the lens dedicated to far vision having a less extensive near vision portion VPL than the near vision portion VPP of the lens dedicated to near vision.

公开(公告)号：BRPI0621241A2

公开(公告)日：2011-12-06

申请号：BRPI0621241

申请日：2006-07-04

Applicant: ESSILOR INT

Inventor： BOURDONCLE BERNARD ,  DECRETON BRUNO

IPC: G02C7/02

Abstract: The progressive multifocal ophthalmic lens with a complex surface including a prism reference point, a cross mounting unit located at 8[deg] above the reference point, and an umbilicated progression meridian with a power addition value of >=1.5 diopter. The power addition value lies between the reference point of far and near vision. Radius of curvature of the lens is adjusted for the far vision using a reduced root mean square deviation with the power addition lower than 0.65 mu m by diopter. The progressive multifocal ophthalmic lens with a complex surface including a prism reference point, a cross mounting unit located at 8[deg] above the reference point, and an umbilicated progression meridian with a power addition value of >=1.5 diopter. The power addition value lies between the reference point of far and near vision. Radius of curvature of the lens is adjusted for the far vision using a reduced root mean square deviation with the power addition lower than 0.65 mu m by diopter, a zone bounded by a centered circle on the prism reference point and by a diameter of the circle corresponding to sweep angle of 80[deg], a progression length is =25[deg], and a difference in reduced root mean square deviation is lower than 0.12 mu m by diopter. The reduced root mean square deviation is determined by calculating the nullified coefficient of orders of 1 and 2 correspond to defocalization in Zernike polynomial decomposition of a wave front face passes through the lens. The progression length is defined as lower common angle of the cross mounting unit up to the point of the meridian for which an optical power carrier reaches 85% of the power addition value. The difference in the reduced root mean square deviation is calculated by an absolute value. The zone comprises a control point of far vision in which the zone is bounded by the half centered circle on the cross mounting unit and by radius of the circle corresponds to an elevation of 25[deg]. The difference in the reduced root mean square deviation between two symmetrical points in half circle is =0.12 mu m by diopter below a horizontal line located at 8[deg] above the cross mounting unit. The half circle has a horizontal base that passes through the cross mounting unit. The symmetrical axis of the half circle is scattered with the progression meridian. Independent claims are included for: (1) a visual equipment; (2) a long-sighted vision correction process; and (3) a lens assembling process.

公开(公告)号：PT1798590E

公开(公告)日：2011-10-13

申请号：PT06290653

申请日：2006-04-21

Applicant: ESSILOR INT

Inventor： BOURDONCLE BERNARD ,  MARIN GILDAS

IPC: G02C7/02

公开(公告)号：ES2361175T3

公开(公告)日：2011-06-14

申请号：ES06290654

申请日：2006-04-21

Applicant: ESSILOR INT

Inventor： BOURDONCLE BERNARD ,  DECRETON BRUNO

IPC: G02C7/02

Abstract: Procedimiento de determinación de una lente oftálmica multifocal progresiva que presenta una superficie compleja que contiene: -un punto de referencia prisma (PRP); -una cruz de centrado (CC) ubicada 8º por encima del punto de referencia prisma; -una meridiana de progresión casi umbilicada que presenta una adición de potencia (A) superior o igual a 1,5 dioptrías entre un punto de referencia en visión lejana (VL) y un punto de referencia en visión cercana (VC); la lente, determinada por optimización óptica en condiciones corrientes de uso con una distancia (q') entre el centro de rotación del ojo y la cara posterior de la lente de 27 mm, un ángulo pantoscópico de 8º y un valor de Galbe de 0º, y llevada a una prescripción plana en visión lejana mediante ajuste de los radios de curvatura de al menos una de sus caras, la optimización óptica utiliza como criterios: -un valor cuadrático medio (RMS) entre un frente de onda resultante que atravesó la lente y un frente de onda de referencia esférica no aberrante, reducida y normalizada a la prescripción de adición (A), inferior a 0,65 micrómetros por dioptría, en una zona delimitada por un círculo centrado en el punto de referencia prisma (PRP) y de diámetro correspondiente a un recorrido de la mirada de 80º, el valor cuadrático medio reducido se calcula anulando los coeficientes de orden 1 y el coeficiente de orden 2 correspondiente al desenfoque en la descomposición en polinomios de Zernike de un frente de onda que atraviesa la lente, para una pupila del ojo de 5 mm de diámetro; -una longitud de progresión (LP) inferior o igual a 25º, la longitud de progresión se define como el ángulo de descenso de la mirada desde la cruz de centrado (CC) hasta el punto de la meridiana en el cual la potencia óptica portadora alcanza un 85% de la prescripción de adición (A), -una diferencia de valor cuadrático medio inferior a 0,12 micrómetros por dioptría, calculada en valor absoluto como la diferencia de valores de valor cuadrático medio entre pares de puntos simétricos respecto de un eje vertical que pasa por la cruz de centrado, en una zona que incluye el punto de control en visión lejana (VL) y delimitada por un semicírculo centrado en la cruz de centrado (CC) y de radio correspondiente a una elevación de la mirada de 25º.

公开(公告)号：DE602007001005D1

公开(公告)日：2009-06-10

申请号：DE602007001005

申请日：2007-08-09

Applicant: CENTRE NAT RECH SCIENT ,  ESSILOR INT

Inventor： BAILLET GILLES ,  BOURDONCLE BERNARD ,  HARRAR MARGALITH ,  VIENOT FRANCOISE

IPC: G01N21/27

Abstract: The method involves calculating colorimetric co-ordinates of digitally generated transmission spectrums. The spectrums having the co-ordinates corresponding to that of an initial color filter are selected. A fictive filter corresponding to each selected spectrum is quantitatively evaluated, where the evaluation result characterizing a capacity of the fictive filter is obtained by using a CIECAM02 model to stimulate a visual perception of a color sample via the fictive filter. One of the selected spectrums having better quantitative evaluation is chosen to improve the initial filter.

公开(公告)号：AT430305T

公开(公告)日：2009-05-15

申请号：AT07114075

申请日：2007-08-09

Applicant: ESSILOR INT ,  CENTRE NAT RECH SCIENT

Inventor： BAILLET GILLES ,  BOURDONCLE BERNARD ,  HARRAR MARGALITH ,  VIENOT FRANCOISE

IPC: G01N21/27

Abstract: The method involves calculating colorimetric co-ordinates of digitally generated transmission spectrums. The spectrums having the co-ordinates corresponding to that of an initial color filter are selected. A fictive filter corresponding to each selected spectrum is quantitatively evaluated, where the evaluation result characterizing a capacity of the fictive filter is obtained by using a CIECAM02 model to stimulate a visual perception of a color sample via the fictive filter. One of the selected spectrums having better quantitative evaluation is chosen to improve the initial filter.

公开(公告)号：FR2895092B1

公开(公告)日：2008-02-29

申请号：FR0512822

申请日：2005-12-16

Applicant: ESSILOR INT

Inventor： BOURDONCLE BERNARD ,  MARIN GILDAS

IPC: G02C7/06

Abstract: The method involves choosing a starting lens having a fitting cross marking a primary viewing direction under wearing conditions and an umbilical progression meridian. The meridian is provided with a power addition greater than or equal to two diopters between far and near vision reference points. A current lens used as target is optimized under wearing conditions. A progression length is defined as the angle of lowered viewing from the fitting cross to a point of the meridian at which a wearer`s optical power reaches 85 percentages of a prescription. Independent claims are also included for the following: (1) a progressive multifocal ophthalmic lens with a complex surface (2) a visual device comprising a progressive multifocal ophthalmic lens (3) a method for correcting a vision of a presbyopic subject.

公开(公告)号：DE69836738T2

公开(公告)日：2007-10-04

申请号：DE69836738

申请日：1998-10-16

Applicant: ESSILOR INT

Inventor： BOURDONCLE BERNARD ,  FRANCOIS SANDRINE

IPC: G02C7/02

Abstract: The invention relates to a pair of progressive ophthalmic spectacle lenses; each lens has an aspherical surface with a far vision zone, an intermediate vision zone and a near vision zone, and good monocular and binocular foveal vision along the principal meridian. At each point of the aspherical surface there is a mean sphere which is proportional to the half sum of the maximum and minimum radii of curvature expressed in meters, and to the refractive index of the lens material. The invention suggests reducing, for a given direction of sight, the absolute value of the difference between a binocularity parameter for two points in the object space. The binocularity parameter is defined for a point in the object space as the relative difference DELTA S of the mean sphere for the points of the aspherical surface of the right and left lenses through which the wearer sees said point.