Device for adhesively blocking a semi-finished optical element

    公开(公告)号:US12233503B2

    公开(公告)日:2025-02-25

    申请号:US16606562

    申请日:2018-06-12

    Abstract: A blocking device includes a support member configured for providing a rigid support to the semi-finished optical element, the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, and assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the support member having a contact face onto which the first face of the optical element is to be applied, the contact face of the support member being a surface of the support element, the shape-memory material being configured for having adherence properties with respect to the first face of the optical element, the adherence properties being sufficient for attaching the first face of the optical element to the contact face of the support element.

    Blocking device for a semi-finished optical element

    公开(公告)号:US12168278B2

    公开(公告)日:2024-12-17

    申请号:US16608955

    申请日:2018-06-12

    Abstract: The blocking device includes a blocking portion configured for blocking the semi-finished optical element and including a support member configured for providing a rigid support to the semi-finished optical element, the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, the support element assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the support member having a contact face onto which the first face of the semi-finished optical element is to be applied; saind blocking portion including at least one of a heating device configured for heating the support element above the predetermined temperature and a cooling device configured for cooling the support element below the predetermined temperature.

    Method for determining a surface of an optical lens adapted to a spectacle frame

    公开(公告)号:US10345618B1

    公开(公告)日:2019-07-09

    申请号:US14898430

    申请日:2014-06-13

    Abstract: Method for determining a surface of a face of an optical lens to be mounted to a spectacle frame, the method comprising: a contour data providing step (S1), during which contour data representing a contour of the spectacle frame is provided, a target curvature data providing step (S2) during which target curvature data representing the target curvature of the surface to be determined over an evaluation zone of said surface is provided, an optical surface determining step (S3), during which a surface is determined so as to minimize: the difference between the target curvature and average curvature of the surface over the evaluation zone, and the difference between the contour of the spectacle frame and the periphery contour of the surface, the periphery contour of the surface corresponding to the contour of the surface to be determined of the optical lens after the optical lens has been edged to be mounted in the spectacle frame.

    METHODS FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS
    5.
    发明申请
    METHODS FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS 有权
    用于确定渐进式眼镜的方法

    公开(公告)号:US20150219924A1

    公开(公告)日:2015-08-06

    申请号:US14426441

    申请日:2013-09-06

    Abstract: A method for determining a progressive ophthalmic lens comprising a near and a far vision area, a main meridian separating the lens into a nasal and a temporal area, the method comprising: determining a first and a second surface of the lens; determining the second surface to provide, in combination with the first surface, the vision correcting properties; determining a spherical area on the first surface of the lens having a constant sphere value and including a far vision diopter measurement position, wherein the far and a near vision diopter measurement position have substantially the same mean sphere value; and determining the first surface to reduce the lens distortion by defining a toric area extending outside the spherical area on the first surface in at least one of the nasal and the temporal area, wherein characteristics of the toric area are related to the lens astigmatism.

    Abstract translation: 一种用于确定渐进式眼科镜片的方法,包括近视和远视区,将子宫分为鼻腔和颞区的主子午线,该方法包括:确定镜片的第一和第二表面; 确定所述第二表面以与所述第一表面组合提供所述视力校正特性; 确定具有恒定球体值并且包括远视屈光度测量位置的透镜的第一表面上的球面区域,其中远和近视屈光度测量位置具有基本上相同的平均球面值; 以及通过在所述鼻部和所述颞部区域中的至少一个中限定延伸到所述第一表面上的所述球形区域外的复曲面区域来确定所述第一表面以减小所述透镜变形,其中所述复曲面区域的特征与所述透镜散光有关。

    Device for pneumatically blocking a semi-finished optical element

    公开(公告)号:US12138731B2

    公开(公告)日:2024-11-12

    申请号:US16612027

    申请日:2018-06-12

    Abstract: A blocking device includes a support member configured for providing a rigid support to the semi-finished optical element, the support member having a contact face onto which a first face of the optical element is to be applied; and a pneumatic blocking member defining a cavity configured to be closed by the first face of the optical element, the pneumatic blocking member being configured to sustain a vacuum inside the cavity so that the optical element is attached to the blocking device; the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, and assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the contact face of the support member being a surface of the support element.

    Method of determining the position of an optical lens member

    公开(公告)号:US11964355B2

    公开(公告)日:2024-04-23

    申请号:US16623895

    申请日:2018-07-30

    Inventor: Jérôme Moine

    Abstract: Disclosed is a method implemented by a computer, for determining the position of an optical lens member having a surface placed on a lens blocking ring, the blocking ring including a bearing zone arranged to bear at least partially a placed known surface of the optical lens member when the known surface of the optical lens member is placed on the lens blocking ring and hold by a force applied on the optical lens member, the method includes finding a trio of points of the bearing zone that forms a triangle including the projection on the main plane of the point of application of the force; and a position of the optical lens having a virtual contact between the placed known surface and the ring at the location of the trios of points.

    Method of locally thickening an ophthalmic lens

    公开(公告)号:US10247961B2

    公开(公告)日:2019-04-02

    申请号:US14785810

    申请日:2014-04-16

    Abstract: Method implemented by computer means for determining an ophthalmic lens adapted to a wearer and to a spectacle frame, the method comprising: providing wearer data comprising the wearer's ophthalmic prescription, providing mounting data comprising at least the tie points of the ophthalmic lens to be mounted in the spectacle frame, providing thickness requirement data comprising the minimum thickness of the ophthalmic lens at the tie points, determining ophthalmic lens data based on the wearer data, the ophthalmic lens data comprising the two optical surfaces of the ophthalmic lens and their relative positions, an oversize creating step (S5), during which the ophthalmic lens determined during the ophthalmic lens data determining step is locally thickened by creating an oversize at the tie points, so that the thickness of the ophthalmic lens at the tie points is greater than or equal to the minimum thickness.

    Methods for determining a progressive ophthalmic lens
    9.
    发明授权
    Methods for determining a progressive ophthalmic lens 有权
    确定渐进式眼科镜片的方法

    公开(公告)号:US09557578B2

    公开(公告)日:2017-01-31

    申请号:US14426441

    申请日:2013-09-06

    Abstract: Methods for determining a progressive ophthalmic lens are described, the lens comprising a near and a far vision area, a main meridian separating the lens into a nasal and a temporal area. The method includes determining a first and a second surface of the lens, determining the second surface to provide, in combination with the first surface, vision correcting properties, and determining a spherical area on the first surface of the lens having a constant sphere value and including a far vision diopter measurement position. The far vision diopter measurement position and a near vision diopter measurement position have substantially the same mean sphere value. The method also includes determining the first surface to reduce the lens distortion by defining a toric area extending outside the spherical area on the first surface in at least one of the nasal and the temporal area, in which characteristics of the toric area are related to the lens astigmatism.

    Abstract translation: 描述了用于确定渐进式眼科镜片的方法,所述透镜包括近视远视区域,主透镜将透镜分离为鼻腔和颞区。 该方法包括确定透镜的第一表面和第二表面,确定第二表面以与第一表面组合提供视力校正特性,以及确定具有恒定球体值的透镜的第一表面上的球面区域,以及 包括远视屈光度测量位置。 远视屈光度测量位置和近视屈光度测量位置具有基本上相同的平均球面值。 该方法还包括确定第一表面以通过在至少一个鼻部和颞部区域中限定延伸到第一表面上的球形区域之外的复曲面区域来减小透镜变形,其中复曲面区域的特征与该区域的特征相关 镜片散光。

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