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    Durable optical interference pigment with a bimetal core
    21.
    发明授权
    Durable optical interference pigment with a bimetal core 有权
    具有双金属芯的耐用光学干涉颜料

    公开(公告)号：US09482800B2

    公开(公告)日：2016-11-01

    申请号：US14300823

    申请日：2014-06-10

    Applicant: Viavi Solutions Inc.

    Inventor： Charles T. Markantes ,  Cornelis Jan Delst ,  Vladimir P. Raksha ,  David de la Fuente ,  Paul G. Coombs

    IPC: G02B5/28

    CPC classification number: G02B5/288 ,  G02B5/003 ,  G02B5/285

    Abstract: In a plurality of asymmetric color-shifting flakes, each flake has an asymmetric magnetic core with a magnetic layer visible on the first side of the core and a non-magnetic reflector layer on the magnetic layer, visible on the second side of the core. The flake has a spacer layer and an absorber layer on the first side of the core, and also a spacer layer and an absorber layer on the second side of the core, for providing color shifting effects. The material of the magnetic layer is different from the material of the reflector layer, and may be more stable when exposed to a chemical. When a coating with the asymmetric color-shifting flakes is exposed to the chemical, it may have better optical performance than a coating with symmetric color-shifting flakes.

    Abstract translation: 在多个非对称色移薄片中，每个薄片具有非对称磁芯，磁芯在磁芯的第一侧可见，磁性层上的非磁性反射层可见于磁芯的第二侧。 薄片在芯的第一侧上具有间隔层和吸收层，并且在芯的第二侧上还具有间隔层和吸收层，用于提供颜色转换效果。 磁性层的材料与反射层的材料不同，暴露于化学物质时可能更稳定。 当具有不对称色移薄片的涂层暴露于化学品时，可能具有比具有对称色移薄片的涂层更好的光学性能。

    Optical security device based on a surface of revolution
    22.
    发明授权
    Optical security device based on a surface of revolution 有权

    公开(公告)号：US12045001B2

    公开(公告)日：2024-07-23

    申请号：US17448932

    申请日：2021-09-27

    Applicant: VIAVI Solutions Inc.

    Inventor： Vladimir P. Raksha ,  Cornelis Jan Delst

    IPC: G03G21/04 ,  B41M3/14 ,  G07D7/12

    CPC classification number: G03G21/043 ,  B41M3/146 ,  G07D7/12

    Abstract: An optical article printed on a substrate may include an organic binder; and a plurality of reflective magnetic platelets provided in the organic binder, wherein the plurality of reflective magnetic platelets are substantially aligned in accordance with at least part of a surface of revolution, and wherein the plurality of reflective magnetic platelets are aligned to cause a first reflective effect of the optical article when the substrate is rotated around a first axis and to cause a second reflective effect of the optical article when the substrate is rotated around a second axis, wherein the first reflective effect is different from the second reflective effect.

    Flakes with undulate borders and methods of forming thereof
    25.
    发明授权
    Flakes with undulate borders and methods of forming thereof 有权

    公开(公告)号：US11001720B2

    公开(公告)日：2021-05-11

    申请号：US16390979

    申请日：2019-04-22

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Alberto Argoitia ,  Cornelis Jan Delst ,  Laurence Holden

    IPC: B32B5/16 ,  C09D7/61 ,  C09C1/00 ,  B82Y30/00 ,  C09D7/40 ,  G02B5/18

    Abstract: The invention provides a plurality of substantially same planar pigment flakes, each formed of one or more thin film layers. Each flake has a face surface and a flake border delimiting the face surface; the flake border undulates in the plane of the flake. The flakes have a pre-selected shape, may have a symbol or a grating thereon. A method of manufacturing of these flakes including the steps of: (a) providing a substrate having a plurality of one-flake regions and a plurality of depressions or protrusions disposed therebetween and not extending into the one-flake regions, (b) coating the substrate with a releasable coating, and (c) removing the releasable coating and breaking it into the flakes; wherein two adjacent of the one-flake regions are separated by at least three of the depressions or protrusions for facilitating the breaking of the releasable coating into the flakes.

    OPTICAL SECURITY DEVICE BASED ON A SURFACE OF REVOLUTION
    26.
    发明申请
    OPTICAL SECURITY DEVICE BASED ON A SURFACE OF REVOLUTION 审中-公开

    公开(公告)号：US20200257235A1

    公开(公告)日：2020-08-13

    申请号：US16862729

    申请日：2020-04-30

    Applicant: VIAVI Solutions Inc.

    Inventor： Vladimir P. RAKSHA ,  Cornelis Jan Delst

    IPC: G03G21/04 ,  B41M3/14 ,  G07D7/12

    Abstract: An optical article printed on a substrate may include an organic binder; and a plurality of reflective magnetic platelets provided in the organic binder, wherein the plurality of reflective magnetic platelets are substantially aligned in accordance with at least part of a surface of revolution, and wherein the plurality of reflective magnetic platelets are aligned to cause a first reflective effect of the optical article when the substrate is rotated around a first axis and to cause a second reflective effect of the optical article when the substrate is rotated around a second axis, wherein the first reflective effect is different from the second reflective effect.

    Durable optical interference pigment with a bimetal core
    27.
    发明授权
    Durable optical interference pigment with a bimetal core 有权

    公开(公告)号：US10031269B2

    公开(公告)日：2018-07-24

    申请号：US15283917

    申请日：2016-10-03

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Charles T. Markantes ,  Cornelis Jan Delst ,  Vladimir P. Raksha ,  David De La Fuente ,  Paul G. Coombs

    IPC: C01B21/064 ,  G02B5/28 ,  G02B5/00

    CPC classification number: G02B5/288 ,  G02B5/003 ,  G02B5/285

    Abstract: In a plurality of asymmetric color-shifting flakes, each flake has an asymmetric magnetic core with a magnetic layer visible on the first side of the core and a non-magnetic reflector layer on the magnetic layer, visible on the second side of the core. The flake has a spacer layer and an absorber layer on the first side of the core, and also a spacer layer and an absorber layer on the second side of the core, for providing color shifting effects. The material of the magnetic layer is different from the material of the reflector layer, and may be more stable when exposed to a chemical. When a coating with the asymmetric color-shifting flakes is exposed to the chemical, it may have better optical performance than a coating with symmetric color-shifting flakes.

    Diffractive pigment blend and composition
    28.
    发明授权
    Diffractive pigment blend and composition 有权

    公开(公告)号：US09732229B2

    公开(公告)日：2017-08-15

    申请号：US13665203

    申请日：2012-10-31

    Applicant: Viavi Solutions Inc.

    Inventor： Cornelis Jan Delst ,  Alberto Argoitia

    IPC: G02B5/18 ,  C09C1/00

    CPC classification number: C09C1/0024 ,  C09C1/0081 ,  C09C2210/30 ,  C09C2220/20

    Abstract: A diffractive pigment blend or composition is provided which includes a plurality of groups of all-dielectric diffractive pigment flakes. The pigment flakes of each group each include one or more dielectric layers for providing a background color, at least one of which includes a diffractive structure for providing a diffractive effect. Each group of pigment flakes provides a different diffractive effect, and the diffractive pigment blend or composition provides a combined diffractive effect that is a combination of the different diffractive effects. The combined diffractive effect may be a neutral white diffractive effect or may include a reversal in color travel.

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