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    Progressive ophthalmic lens and method of producing one such lens
    21.
    发明专利
    Progressive ophthalmic lens and method of producing one such lens 未知

    公开(公告)号：AU2005323921A1

    公开(公告)日：2006-07-13

    申请号：AU2005323921

    申请日：2005-12-19

    Applicant: ESSILOR INT

    Inventor： BOURDONCLE BERNARD ,  GUILLOUX CYRIL ,  DECRETON BRUNO

    IPC: G02C7/02

    Abstract: The invention relates to a progressive ophthalmic lens and to a method of producing one such lens. Variations in the optical power and the astigmatism of a progressive ophthalmic lens (10) result from (i) spherical and cylindrical variations in the anterior face (2) of the lens and (ii) variations in another physical unit of the lens. In this way, it is possible to customise the design of the progressive lens as a function of at least one behavioural characteristic of the lens wearer. Said customisation can be repeated by modulating the values of the physical unit between the different points of the lens. As a result, progressive lenses with different designs can be obtained from identical semi-finished lenses. The physical unit can comprise the sphere and the cylinder of the posterior face of the lens (3).

    Lentilla oftálmica
    23.
    发明专利
    Lentilla oftálmica 未知

    公开(公告)号：ES2389487T3

    公开(公告)日：2012-10-26

    申请号：ES10165002

    申请日：2006-04-21

    Applicant: ESSILOR INT

    Inventor： CHAUVEAU JEAN-PIERRE ,  DECRETON BRUNO ,  LE SAUX GILLES

    IPC: G02C7/02

    Abstract: Una lentilla oftálmica multifocal progresiva que tiene una prescripción de adición de potencia (A) y que presenta una superficie compleja que tiene: - una cruz de montaje (CM); - una zona de visión de lejos con un punto de control (VL), una zona de visión de cerca con un punto de 5 control (VP) y una zona de visión intermedia; - una meridiana principal de progresión que atraviesa estas tres zonas; presentando la lentilla, en condiciones corrientes de uso con la cruz de montaje (CM) cortando la dirección principal de la mirada, una distancia (q') entre el centro de rotación del ojo y la cara trasera de la lentilla de 27 mm, un ángulo pantoscópico de 8º y un valor de perfil de 0º, y llevada a una prescripción plana en visión de lejos por ajuste de los radios de curvatura de al menos una de sus caras: - una desviación cuadrática media (RMS) entre un frente de onda resultante que ha atravesado la lentilla y un frente de onda de referencia esférico no aberrante correspondiente a la mejor esfera que pasa por este frente de onda resultante, reducida, y normalizada a la prescripción de adición (A), inferior a 0,025 micras por dioptría sobre una zona que incluye el punto de control en visión de lejos (VL) y que cubre un sector cuya parte superior está situada sobre la meridiana de progresión sensiblemente a 4° bajo la cruz de montaje (CM) con una abertura angular comprendida entre 150 ° y 160° y de rayo comprendido entre 35º y 45º, siendo calculada la desviación cuadrática media reducida anulando los coeficientes de orden 1 y 2 en la descomposición en polinomios de Zernike de un frente de onda que atraviesa la lentilla para un diámetro de pupila de 5 mm;- una longitud de progresión (LP) inferior o igual a 25°, estando definida la anchura de progresión como el ángulo de bajada o descenso de la visión desde la cruz de montaje (CM) hasta el punto de la meridiana para el que la potencia óptica de portador alcanza el 85% de la prescripción de adición (A).

    27.
    发明专利
    未知

    公开(公告)号：AT499626T

    公开(公告)日：2011-03-15

    申请号：AT06290654

    申请日：2006-04-21

    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.

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