ЭЛЕМЕНТ В ВИДЕ ЛИНЗЫ

    公开(公告)号:RU2769091C2

    公开(公告)日:2022-03-28

    申请号:RU2020131393

    申请日:2019-03-01

    Applicant: ESSILOR INT

    Abstract: Элементв видеочковойлинзы, предназначенныйдляношенияпередглазомчеловека, содержитобластьпреломления, обладающуюпреломляющейспособностью, основаннойнарецептедляуказанногоглаза, имножествоизпоменьшеймеретрехоптическихэлементов, которыенеявляютсянепрерывными. Поменьшеймереодиноптическийэлементобладаетнесферическойоптическойфункцией. Областьпреломленияобразованакакобласть, отличнаяотчастей, образованныхкакмножествооптическихэлементов. Поменьшеймереодинизоптическихэлементовпредставляетсобоймультифокальнуюпреломляющуюмикролинзу, содержащуюасферическуюпрогрессивнуюповерхность. Асферическиемикролинзыимеютасферичностьот 0,1D до 3D илиихасферичностьпослепокрытияповерхностиэлементав виделинзыизменяетсяв соответствиис радиальнымрасстояниемотоптическогоцентрауказанногоэлементав виделинзы. Техническийрезультат - улучшениезамедленияилиснижениепрогрессиианомальногопреломленияглазапримиопииилигиперметропии. 12 з.п. ф-лы, 11 ил., 3 табл.

    LENS ELEMENT
    12.
    发明专利

    公开(公告)号:SG11202008022SA

    公开(公告)日:2020-09-29

    申请号:SG11202008022S

    申请日:2019-03-01

    Applicant: ESSILOR INT

    Abstract: A lens element worn in front of an eye of a person includes a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of the eye of the person and a second refractive power different from the first refractive power and a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.

    METHOD FOR DETERMINING AN OPHTHALMIC LENS ADAPTED FOR CORRECTING AN ABNORMAL REFRACTION OF AN EYE OF A WEARER

    公开(公告)号:CA3119872A1

    公开(公告)日:2020-05-22

    申请号:CA3119872

    申请日:2019-11-14

    Applicant: ESSILOR INT

    Abstract: Method for determining an ophthalmic lens adapted for correcting an abnormal refraction of an eye of a wearer, and comprising optical elements placed on a surface of said ophthalmic lens so as to prevent a progression of the abnormal refraction of the eye of the wearer, the method comprising: - providing prescription data adapted at least for correcting the abnormal refraction of the eye of the wearer; - providing an abnormal refraction parameter relating to the abnormal refraction of an eye of the wearer; - providing a sensitivity parameter representing the variation of sensitivity of the wearer as a function of at least one parameter of the optical elements; - determining a value of a parameter of the optical elements adapted for the wearer based on the abnormal refraction parameter and the sensitivity parameter: - determining an ophthalmic lens based at least on the prescription data and the value of the parameter of the optical elements adapted for the wearer.

    LENS ELEMENT
    14.
    发明专利

    公开(公告)号:CA3092418A1

    公开(公告)日:2019-09-06

    申请号:CA3092418

    申请日:2019-03-01

    Applicant: ESSILOR INT

    Abstract: A lens element intended to be worn in front of an eye of a person comprising: - a prescription portion having a first refractive power based on a prescription for correcting an abnormal refraction of said eye of the person and a second refractive power different from the first refractive power; - a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.

    PROGRESSIVE OPHTHALMIC LENS
    18.
    发明专利

    公开(公告)号:ZA201306748B

    公开(公告)日:2015-03-25

    申请号:ZA201306748

    申请日:2013-09-09

    Abstract: The invention relates to a progressive ophthalmic lens comprising a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value (and a cylinder value, the front surface of the lens comprising: - a far vision zone having a far vision reference point ; - a near vision zone having a near vision reference point ; - a main meridian, wherein the front surface is regressive and has: - a sphere gradient normalized value of less than 7.50.10 -1 mm -1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); - a cylinder gradient normalized value of less than 1.45 mm -1 at any point in the central portion of the lens

    METHODS FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS AND A SET OF SEMI FINISHED LENS BLANKS

    公开(公告)号:CA2858460A1

    公开(公告)日:2013-06-20

    申请号:CA2858460

    申请日:2012-12-17

    Applicant: ESSILOR INT

    Abstract: The invention relates to a method for determining a progressive ophthalmic lens, comprising: - determining a first intermediate value of regression (d1) as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to a first predetermined value (V1); - determining a second intermediate value of regression (d2) as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the front surface of the lens superior or equal to a second predetermined value (V2); - determining a third intermediate value of regression (d3) as the strongest regression that can be applied on the front surface of the lens while keeping an addition on the rear surface of the lens less or equal to a third predetermined value (V3); - determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression.

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