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.

    Set including a semi-finished optical element and a blocking device; and a method for providing such a set

    公开(公告)号:US11623317B2

    公开(公告)日:2023-04-11

    申请号:US16484393

    申请日:2018-02-07

    Abstract: A set includes a molding device having a molding face having the same shape as a contact face of the blocking device. A removable overlay of rigid material has a first face attached to a first face of the semi-finished optical element and a second face opposite to the first face having the same shape as the contact face of the blocking device, the set being configured for having a first subset configuration in which the second face of the removable overlay is in molding contact with the molding face of the molding device, then a second subset configuration in which the second face of the removable overlay is free and then a third subset configuration in which the second face of the removable overlay is retained in contact with the contact face of the blocking device.

    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 testing the feasibility of a pair of spectacles

    公开(公告)号:US10996490B2

    公开(公告)日:2021-05-04

    申请号:US15766616

    申请日:2016-10-06

    Abstract: Disclosed is a method for testing the feasibility of a pair of spectacles, the pair of spectacles comprising an identified spectacle frame. The method includes steps of: a) acquiring a range of values of at least one first parameter relating to a spectacle wearer, in all of which range it is desired to ensure the feasibility of the pair of spectacles, b) acquiring a range of values of at least one second parameter that relates to a spectacle wearer and that is different from each first parameter, in all of which range it is desired to ensure the feasibility of the pair of spectacles, c) confirming, for a characteristic number of values of each second parameter, that the pair of spectacles is feasible whatever the value of each first parameter comprised in its range.

    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.

    Ophthalmic lens edging process by calculation

    公开(公告)号:US10449652B2

    公开(公告)日:2019-10-22

    申请号:US15540984

    申请日:2014-12-31

    Abstract: Described are systems and methods for controlling an ophthalmic lens edging machine are disclosed. The ophthalmic lens edging machine uses an edger code to select a macro or speed for a requested lens edging job. A system for creating and using the edger code may include a Lab Management System (LMS), a lens calculation system, and a lens edging machine. An edger code may be generated using lens data received from a lens management system and edging machine information identifying lens edging machines. The edger code comprises a plurality of characters. Each character is associated with a different feature of a requested edging job. The features of the requested edging job may include, for example, one or more of: a material type, a lens thickness, an edge type, a frame type, a lens coating, a lens shape, a lens ratio, a lens treatment, and an edging machine block type.

    Calculation system for manufacturing an ophthalmic lens

    公开(公告)号:US10189220B2

    公开(公告)日:2019-01-29

    申请号:US14784152

    申请日:2014-04-16

    Abstract: A calculation system (1) for manufacturing an ophthalmic lens. A set of calculation modules (M1, M2, M3, M4) is associated to partial calculation in relation with manufacturing process of said ophthalmic lens. A managing unit (MU) is configured to: receive input data, and calculate output data through one or several iteration(s) of: determining one or several calculation module(s) to be activated, determining an order of activation of the one or several calculation module(s), and activating the determined one or several calculation module(s), in accordance with the determined order of activation. The managing unit transmits an indication that the output data have been calculated.

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