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    Management system and method of an active lens
    17.
    发明授权
    Management system and method of an active lens 有权

    公开(公告)号：US10317703B2

    公开(公告)日：2019-06-11

    申请号：US15540995

    申请日：2015-12-23

    Applicant: Essilor International

    Inventor： Denis Rousseau ,  Coralie Barrau ,  Denis Cohen Tannoudji ,  Stephane Perrot ,  Aude Bouchier ,  Jean-Paul Cano ,  Claudine Biver ,  Samuel Archambeau ,  Jerome Ballet ,  David Escaich

    IPC: G02C7/02 ,  G02C7/10 ,  G02C7/12

    Abstract: The invention relates to the field of management of an active lens and more particularly to a management system comprising an active lens (1), a first sensor (2) arranged to measure data relating to an incident light on the active lens, a control unit (4) designed for controlling the active lens according to data measured by the first sensor, wherein the management system further comprises a second sensor (3) arranged to measure data relating to a light transmitted from the incident light through the active lens, the control unit being further designed to adjust, according to said data measured by the second sensor, the control already performed according to said data measured by the first sensor. Thus the management system allows taking into account data relating to the light passing through the active lens as a feedback in order to finely control the active lens.

    Optical article comprising a double-layer abrasion and scratch resistant coating and method for production thereof
    18.
    发明授权
    Optical article comprising a double-layer abrasion and scratch resistant coating and method for production thereof 有权

    公开(公告)号：US10222511B2

    公开(公告)日：2019-03-05

    申请号：US15264290

    申请日：2016-09-13

    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)

    Inventor： Fabien Berit-Debat ,  Christian Bovet ,  Jean-Paul Cano ,  Amélie Kudla ,  Yves Leclaire

    IPC: C09D183/04 ,  G02B1/14 ,  G02B1/10 ,  B05D3/02 ,  B05D7/00 ,  G02C7/02

    Abstract: The invention relates to an optical article comprising a substrate coated with an abrasion and scratch resistant coating composed of a lower layer and an upper layer that do adhere to each other, the upper layer and the lower layer being layers of cured upper and lower layer compositions, said upper layer composition comprising at least one organosilane, or a hydrolyzate thereof, of formula RnYmSi(X)4-n-m and at least one compound, or a hydrolyzate thereof, of formula M(Z)x, the following ratio being lower than 2.3: Rs = ⁢ theoretical ⁢ ⁢ dry ⁢ ⁢ matter ⁢ ⁢ weight ⁢ ⁢ of compounds ⁢ ⁢ I ⁢ ⁢ in ⁢ ⁢ the ⁢ ⁢ upper ⁢ ⁢ layer ⁢ ⁢ composition theoretical ⁢ ⁢ dry ⁢ ⁢ matter ⁢ ⁢ weight ⁢ ⁢ of compounds ⁢ ⁢ II ⁢ ⁢ in ⁢ ⁢ the ⁢ ⁢ upper ⁢ ⁢ layer ⁢ ⁢ composition said lower layer composition comprising at least one organosilane, or a hydrolyzate thereof, of formula R′n′Y′m′Si(X′)4-n′-m′ and, optionally, at least one compound, or a hydrolyzate thereof, of formula M′(Z′)y, the following ratio being higher than 2.3: Ri = ⁢ theoretical ⁢ ⁢ dry ⁢ ⁢ matter ⁢ ⁢ weight ⁢ ⁢ of compounds ⁢ ⁢ III ⁢ ⁢ in ⁢ ⁢ the ⁢ ⁢ lower ⁢ ⁢ layer ⁢ ⁢ composition theoretical ⁢ ⁢ dry ⁢ ⁢ matter ⁢ ⁢ extract ⁢ ⁢ of compounds ⁢ ⁢ IV ⁢ ⁢ in ⁢ ⁢ the ⁢ ⁢ lower ⁢ ⁢ layer ⁢ ⁢ composition In the hereabove formulas, M and M′ are metals or metalloids of valences x and y, at least equal to 4, R and R′ groups are monovalent organic groups that are bound to silicon through a carbon atom and that contain at least one epoxy function, X, X′, Z and Z′ groups are hydrolyzable groups, Y and Y′ are monovalent organic groups that are bound to silicon through a carbon atom, n, m, n′ and m′ being integers such that n and n′=1 or 2 with n+m and n′+m′=1 or 2.

    Optical article
    19.
    发明授权
    Optical article 有权

    公开(公告)号：US12124115B2

    公开(公告)日：2024-10-22

    申请号：US17622437

    申请日：2020-06-17

    Applicant: Essilor International

    Inventor： Samuel Archambeau ,  Aude Bouchier ,  Jean-Paul Cano

    IPC: G02C7/08 ,  G02B27/00 ,  G02F1/29

    CPC classification number: G02C7/083 ,  G02B27/0093 ,  G02F1/294

    Abstract: An optical article that includes an ophthalmic lens that includes a substrate, a first layer comprising liquid crystals being disposed on at least part of the substrate, and a first and a second electrode made of a conductive material, and a voltage source electrically connected to the first and second electrodes and configured to control an orientation of the liquid crystals depending on the voltage applied. The ophthalmic lens further includes a second layer made of photoconductive material placed between the electrodes, and the optical article further includes a light projector configured to project a light pattern on the second layer of the ophthalmic lens, the second layer being locally conductive when illuminated by the light pattern, the light pattern corresponding to a pattern of refractive index modification to be induced by the liquid crystals of the first layer.

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