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    Optical article comprising an antireflective coating with a very low reflection in the visible and ultraviolet regions
    2.
    发明授权
    Optical article comprising an antireflective coating with a very low reflection in the visible and ultraviolet regions 有权

    公开(公告)号：US10088602B2

    公开(公告)日：2018-10-02

    申请号：US15308871

    申请日：2014-05-05

    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)

    Inventor： Ilya Bolshakov ,  Hélène Maury ,  Xingzhao Ding

    IPC: G02C7/02 ,  G02B1/116 ,  G02C7/10 ,  G02B1/16

    Abstract: This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one high refractive index layer (HI) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (LI) having a refractive index lower than 1.55, characterized in that: said at least one high refractive index layer (HI) is in direct contact with said at least one low refractive index layer (LI) forming a bilayer, said bilayer has a physical thickness lower than or equal to 60 nm, said bilayer is, in the direction moving away from said transparent substrate, in second to last place in said multilayered antireflective coating, said multilayered antireflective coating has a mean reflection factor Ruv between 280 nm and 380 nm, lower than 5% for an angle of incidence in the range from 20° to 50°.

    Systems, devices and methods using spectacle lens and frame
    4.
    发明授权
    Systems, devices and methods using spectacle lens and frame 有权

    公开(公告)号：US11822709B2

    公开(公告)日：2023-11-21

    申请号：US17632623

    申请日：2020-08-05

    Applicant: ESSILOR INTERNATIONAL

    Inventor： Yu Liu ,  Chit Yaw Fu ,  Yassine Fakhreddine ,  Xingzhao Ding

    IPC: G06F3/01 ,  G02B27/01 ,  G06F1/3231 ,  G02C7/02 ,  G06F1/3234 ,  G06K19/06 ,  G02C11/00

    CPC classification number: G06F3/011 ,  G02B27/0172 ,  G02C7/021 ,  G02B2027/0178

    Abstract: A system including a sensor configured so that the presence of a spectacle within a detection range of the sensor is detectable by the sensor when the spectacle includes a predetermined identification structure. The system may further include a control unit configured to receive an information from the sensor and to carry out a predetermined action, upon a condition in which the one or more spectacle lenses may be detected. A method may include detecting the presence of the spectacle within a detection range, and further providing, by the sensor, an information to the control unit. The information may confirm the detection of the spectacle. The method may include carrying out, by the control unit, the predetermined action. A computer program product including instructions to cause the system to execute the steps of the method. A computing device including the sensor and a memory.

    Optical article with high reflection in the near infrared region and in the blue light region
    8.
    发明授权
    Optical article with high reflection in the near infrared region and in the blue light region 有权

    公开(公告)号：US11199729B2

    公开(公告)日：2021-12-14

    申请号：US16324043

    申请日：2017-04-28

    Applicant: ESSILOR INTERNATIONAL

    Inventor： Xingzhao Ding ,  Shi Qin Gracia Loo ,  Andrew Rosales Pelayo

    IPC: G02C7/10 ,  G02B5/28 ,  G02B1/115

    Abstract: This invention relates to an optical article comprising a transparent substrate coated with an antireflective coating comprising at least two layers having a low refractive index, and at least two layers having a high refractive index, one layer having a high refractive index being the nearest from said substrate, characterized in that the total physical thickness of said antireflective coating is equal to or lower than 600 nm, and such that: —the mean reflection factor in the near infrared region is higher than or equal to 20% at an angle of incidence lower than 35°, and —the mean reflection factor RmB of blue light at a wavelength ranging from 420 to 450 nm is higher than or equal to 7.0% at an angle of incidence lower than 15°.

    Optical article comprising an antireflective coating with a very low reflection in the visible and ultraviolet regions
    10.
    发明授权
    Optical article comprising an antireflective coating with a very low reflection in the visible and ultraviolet regions 有权

    公开(公告)号：US10267953B2

    公开(公告)日：2019-04-23

    申请号：US15996742

    申请日：2018-06-04

    Applicant: ESSILOR INTERNATIONAL

    Inventor： Ilya Bolshakov ,  Hélène Maury ,  Xingzhao Ding

    IPC: G02B1/116 ,  G02C7/02 ,  G02B1/16 ,  G02C7/10

    Abstract: This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one high refractive index layer (HI) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (LI) having a refractive index lower than 1.55, characterized in that: said at least one high refractive index layer (HI) is in direct contact with said at least one low refractive index layer (LI) forming a bilayer, said bilayer has a physical thickness lower than or equal to 60 nm, said bilayer is, in the direction moving away from said transparent substrate, in second to last place in said multilayered antireflective coating, said multilayered antireflective coating has a mean reflection factor RUV between 280 nm and 380 nm, lower than 5% for an angle of incidence in the range from 20° to 50°.

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