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    OPTICAL ARTICLE COMPRISING A DOUBLE-LAYER ABRASION AND SCRATCH RESISTANT COATING AND METHOD FOR PRODUCTION THEREOF
    22.
    发明申请
    OPTICAL ARTICLE COMPRISING A DOUBLE-LAYER ABRASION AND SCRATCH RESISTANT COATING AND METHOD FOR PRODUCTION THEREOF 审中-公开
    包含双层磨损和耐刮擦涂层的光学制品及其生产方法

    公开(公告)号：US20170003420A1

    公开(公告)日：2017-01-05

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

    CPC classification number: G02B1/14 ,  B05D3/0254 ,  B05D7/546 ,  C09D183/04 ,  G02B1/105 ,  G02C7/02 ,  Y10T428/2495 ,  Y10T428/265 ,  Y10T428/31511

    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.

    Abstract translation: 在上述式中，M和M'是化合价x和y的金属或准金属，至少等于4，R和R'基团是通过碳原子与硅结合且含有至少一个环氧基的单价有机基团 功能X，X'，Z和Z'基团是可水解基团，Y和Y'是通过碳原子与硅结合的一价有机基团，n，m，n'和m'是整数，使得n和n '= 1或2，其中n + m和n'+ m'= 1或2。

    EYEWEAR FOR DETERMINING AN EYE DIRECTION
    23.
    发明公开
    EYEWEAR FOR DETERMINING AN EYE DIRECTION 审中-公开

    公开(公告)号：US20240168550A1

    公开(公告)日：2024-05-23

    申请号：US18551058

    申请日：2022-03-31

    Applicant: Essilor International

    Inventor： Jessica COMBIER ,  Aude BOUCHIER ,  Jean-Paul CANO

    IPC: G06F3/01 ,  A61B3/113

    CPC classification number: G06F3/013 ,  A61B3/113

    Abstract: An eyewear is adapted for fitting a user's face and for determining an eye direction of a user's eye. The eyewear is provided with at least three light sensors each configured for outputting a measured light intensity value that corresponds to ambient light originating from surroundings of the user outside the eyewear and reflected or scattered by the user's eye. A processing unit of the eyewear determines the eye direction from the measured light intensity values.

    ELECTROCHROMIC SOLUTION
    24.
    发明公开
    ELECTROCHROMIC SOLUTION 审中-公开

    公开(公告)号：US20230220274A1

    公开(公告)日：2023-07-13

    申请号：US18001199

    申请日：2021-06-09

    Applicant: Essilor International

    Inventor： Samuel ARCHAMBEAU ,  Claudine BIVER ,  Fabien BERIT DEBAT ,  Jerôme BALLET ,  Jean-Paul CANO

    IPC: C09K9/02 ,  G02F1/1503 ,  G02F1/1523 ,  G02F1/1516

    CPC classification number: C09K9/02 ,  G02F1/1503 ,  G02F1/1525 ,  G02F1/1516 ,  G02F2001/1518

    Abstract: The present invention relates to an electrochromic solution and a use thereof, wherein the said solution comprises: a solvent; a thickening polymer agent having a molecular weight of at least 50,000 g/mol, preferably 200,000 g/mol, more preferably of at least 250,000 g/mol; at least an additive having a molecular weight between 300 and 50,000 g/mol, preferably between 320 and 20,000 g/mol; a redox chemical mixture in solution in said solvent said mixture being constituted of at least one electrochromic reducing compound and at least one electrochromic oxidizing compound, and which colors in the presence of an applied voltage and which bleaches to a colorless condition in the absence of an applied voltage. The invention further relates to a device comprising said solution.

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