公开(公告)号：US12152152B2

公开(公告)日：2024-11-26

申请号：US16894517

申请日：2020-06-05

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Cornelis Jan Delst

IPC: C09C1/00 ,  B41M3/14 ,  B42D25/29 ,  C09D11/037

Abstract: A flake including a layer of a diamagnetic material; and at least one additional layer is disclosed. The flake, such as a plurality of flakes, can be dispersed in a liquid medium to form a composition. The composition can be applied to a surface of a substrate to form a security device. A method of making the security device is also disclosed.

公开(公告)号：US11193002B2

公开(公告)日：2021-12-07

申请号：US16330021

申请日：2017-08-31

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir Raksha ,  Cornelis Jan Delst

IPC: C08K3/01 ,  B05D3/00 ,  B05D5/06 ,  B05D3/06 ,  B42D25/369 ,  B42D25/41 ,  C09D5/23 ,  C09D7/40 ,  B41M7/00 ,  C08K7/00 ,  B41M3/14

Abstract: According to examples, a substrate may be moved through a magnetic field, in which the substrate includes a fluid carrier containing magnetically-orientable flakes. The magnetic field may influence the magnetically-orientable flakes to be respectively oriented in one of multiple orientations. In addition, during movement of the substrate through the magnetic field, radiation may be applied onto a plurality of selected portions of the fluid carrier through at least one opening in a mask to cure the fluid carrier at the plurality of selected portions and fix the magnetically-orientable flakes in the plurality of selected portions at the respective angular orientations as influenced by the magnetic field.

公开(公告)号：US11079525B2

公开(公告)日：2021-08-03

申请号：US16113969

申请日：2018-08-27

Applicant: VIAVI Solutions Inc.

Inventor： Cornelis Jan Delst ,  Matthew R. Witzman ,  Paul T. Kohlmann ,  Charles T. Markantes

IPC: B29C70/58 ,  C09C1/00 ,  C09D5/36 ,  G02B5/22 ,  G02B5/28 ,  G02B27/00

Abstract: A method of providing a configuration of a system of interference filters with a visible color shifting effect, includes: a hue matching step of identifying a configuration of a first interference filter including two first metal layers and a first spacer layer therebetween, and a configuration of a second interference filter including two second metal layers and a second spacer layer therebetween, wherein the first and second filters match in hue at the first viewing angle, and the mismatch in hue at the second angle; and a lightness adjustment step which may include modifying the layer material or the layer thickness of one of the metal layers; wherein a difference in lightness at the first viewing angle between the first and second modified filters is less that a difference in lightness at the first viewing angle between the first and second filters.

公开(公告)号：US11007808B2

公开(公告)日：2021-05-18

申请号：US16253036

申请日：2019-01-21

Applicant: VIAVI SOLUTIONS INC.

Inventor： Paul Thomas Kohlmann ,  Cornelis Jan Delst

IPC: B42D25/378 ,  B42D25/369 ,  B42D25/405 ,  G01J3/46 ,  C09C1/00 ,  G02B5/28 ,  B42D25/36 ,  G07D7/202 ,  G07D7/00 ,  G07D7/12 ,  B42D25/29 ,  B42D25/373

Abstract: There is disclosed a security device, including a substrate; a first color-shifting pigment on a first region of the substrate; and a second pigment, including at least three dielectric layers, on a second region of the substrate; wherein the first color-shifting pigment and the second pigment color match at a first viewing angle. Methods of making and using the security device are also disclosed.

公开(公告)号：US10300729B2

公开(公告)日：2019-05-28

申请号：US15375962

申请日：2016-12-12

Applicant: Viavi Solutions Inc.

Inventor： Paul T. Kohlmann ,  Alberto Argoitia ,  Cornelis Jan Delst

IPC: G02B5/18 ,  G02B27/44 ,  B32B5/16 ,  B42D25/324 ,  C09C1/00 ,  B42D25/20 ,  G02B5/20 ,  G02B5/28 ,  B42D25/29 ,  B42D25/36

Abstract: A color shifting security device has a Fabry-Perot type structure wherein a dielectric layer is disposed between a reflector and an absorbing layer. The absorber and reflector layers may be conforming and the dielectric layer therebetween is non-conforming, filling the regions in the micro structured adjacent absorbing or reflecting layer, at least one of which has a microstructure therein or thereon. By having the dielectric layer not conform to the microstructure it is next to, its thickness varies in cross section, which allows for different colors to be seen where the thickness varies.

公开(公告)号：US10189997B2

公开(公告)日：2019-01-29

申请号：US15790854

申请日：2017-10-23

Applicant: Viavi Solutions Inc.

Inventor： Cornelis Jan Delst ,  Vladimir P. Raksha ,  David de la Fuente

IPC: C09C1/00 ,  C09C3/04 ,  C09C1/62 ,  C09C1/22

Abstract: A colorant including a mixture of pigments is disclosed. The pigments have a similar coloration but different resistance to corrosion. The mixing ratio is selected to optimize the corrosion resistance against color brightness, and/or acidic corrosion resistance against alkali corrosion resistance of the colorant.

公开(公告)号：US09845398B2

公开(公告)日：2017-12-19

申请号：US15296863

申请日：2016-10-18

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul T. Kohlmann ,  Cornelis Jan Delst ,  Paul G. Coombs

IPC: C09D7/12 ,  C09C1/00 ,  C09D17/00 ,  C09D11/037 ,  H01F1/03 ,  H01F1/01 ,  H01F1/28 ,  C09D5/32 ,  H01F1/26

CPC classification number: C09D7/62 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/42 ,  C01P2006/60 ,  C09C1/0015 ,  C09C2200/1054 ,  C09C2210/00 ,  C09D5/32 ,  C09D7/70 ,  C09D11/037 ,  C09D17/004 ,  H01F1/01 ,  H01F1/0306 ,  H01F1/26 ,  H01F1/28

Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.

公开(公告)号：US11680175B2

公开(公告)日：2023-06-20

申请号：US16702191

申请日：2019-12-03

Applicant: VIAVI SOLUTIONS INC.

Inventor： Cornelis Jan Delst ,  Paul Thomas Kohlmann

IPC: C09D5/29 ,  B42D25/369 ,  B42D25/378 ,  B42D25/373

CPC classification number: C09D5/29 ,  B42D25/369 ,  B42D25/378 ,  B42D25/373

Abstract: A composition including a first color shifting pigment having a first color shift that extends from a starting color at normal through a plurality of colors as a viewing angle is increased to a final color, wherein the first color shift rotates counterclockwise relative to, and about, an origin of the L*a*b* color space; and a color filter that transmits a portion of the first color shift of the first color shifting pigment and absorbs a remainder of the first color shift of the first color shifting pigment; wherein the composition has a second color shift different from the first color shift; and wherein the second color shift has a first portion that rotates counterclockwise relative to the origin and a second portion that rotates clockwise relative to the origin is disclosed. A security device including the composition is included. A method of making the composition and a method of authenticating the security device are also disclosed.

公开(公告)号：US11554603B2

公开(公告)日：2023-01-17

申请号：US17301810

申请日：2021-04-15

Applicant: VIAVI Solutions Inc.

Inventor： Cornelis Jan Delst ,  Vladimir P. Raksha ,  Paul G. Coombs ,  Robert B. Sargent ,  Michael Ray Nofi

IPC: B42D25/36 ,  B42D25/369 ,  G02B5/09 ,  B42D25/378 ,  B42D25/373 ,  B42D25/425 ,  B42D25/29

Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.

公开(公告)号：US10981410B2

公开(公告)日：2021-04-20

申请号：US16845214

申请日：2020-04-10

Applicant: VIAVI Solutions Inc.

Inventor： Cornelis Jan Delst ,  Vladimir P. Raksha ,  Paul G. Coombs ,  Robert B. Sargent ,  Michael Ray Nofi

IPC: B42D25/36 ,  B42D25/369 ,  G02B5/09 ,  B42D25/378 ,  B42D25/373 ,  B42D25/425 ,  B42D25/29

Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.