公开(公告)号：US10242788B2

公开(公告)日：2019-03-26

申请号：US15601439

申请日：2017-05-22

Applicant: Viavi Solutions Inc.

Inventor： Vladimir P. Raksha ,  Charles T. Markantes ,  Paul G. Coombs ,  Roger W. Phillips ,  Paul T. Kohlmann ,  Alberto Argoitia ,  Neil Teitelbaum

IPC: H01F10/08 ,  C09D5/33 ,  C09D11/50 ,  B42D25/328 ,  C09D201/00 ,  B42D25/29 ,  C09C1/00 ,  C09D11/037 ,  B42D25/369 ,  B82Y30/00 ,  H01F1/00 ,  C09D7/40 ,  H01F41/16

Abstract: The invention relates to anisotropic, reflective, magnetic flakes. In a liquid carrier and under influence of an external magnetic field, the flakes attract to one another side-by-side and form ribbons which provide higher reflectivity to a coating and may be used as a security feature for authentication of an object.

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.

公开(公告)号：US09945790B2

公开(公告)日：2018-04-17

申请号：US14819179

申请日：2015-08-05

Applicant: Viavi Solutions Inc.

Inventor： Benjamin F. Catching ,  Marc K. Von Gunten ,  Curtis R. Hruska ,  Paula Smith ,  Paul G. Coombs

IPC: G01N21/85 ,  G01J3/02 ,  G01J3/12 ,  G01N21/27

CPC classification number: G01N21/85 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/12 ,  G01J2003/123 ,  G01J2003/1234 ,  G01N21/27 ,  G01N21/8507 ,  G01N2201/061 ,  G01N2201/062 ,  G01N2201/068

Abstract: Increasing the precision of process monitoring may be improved if the sensors take the form of travelling probes riding along with the flowing materials in the manufacturing process rather than sample only when the process moves passed the sensors fixed location. The probe includes an outer housing hermetically sealed from the flowing materials, and a light source for transmitting light through a window in the housing onto the flowing materials. A spatially variable optical filter (SVF) captures light returning from the flowing materials, and separates the captured light into a spectrum of constituent wavelength signals for transmission to a detector array, which provides a power reading for each constituent wavelength signal.

公开(公告)号：US20170056902A1

公开(公告)日：2017-03-02

申请号：US15350021

申请日：2016-11-12

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes

IPC: B05B7/02 ,  B42D25/29 ,  B41M3/14 ,  B42D25/369

CPC classification number: B41M1/00 ,  B05B5/00 ,  B05B7/02 ,  B05D3/207 ,  B05D5/06 ,  B05D5/061 ,  B41F11/02 ,  B41F23/00 ,  B41M3/00 ,  B41M3/14 ,  B41M5/00 ,  B41P2200/30 ,  B42D25/29 ,  B42D25/369 ,  B42D2033/16 ,  B42D2035/20

Abstract: The invention relates to a method of aligning magnetic flakes, which includes: coating a substrate with a carrier having the flakes dispersed therein, moving the substrate in a magnetic field so as to align the flakes along force lines of the magnetic field in the absence of an effect from a solidifying means, and at least partially solidifying the carrier using a solidifying means while further moving the substrate in the magnetic field so as to secure the magnetic flakes in the carrier while the magnetic field maintains alignment of the magnetic flakes. An apparatus is provided, which has a belt for moving a substrate along a magnet assembly for aligning magnetic flakes. The apparatus also includes a solidifying means, such as a UV- or e-beam source, and a cover above a portion of the magnet assembly for protecting the flakes from the effect of the solidifying means.

Abstract translation: 本发明涉及一种对准磁性薄片的方法，其包括：用分散在其中的薄片的载体涂覆基材，使基板在磁场中移动，以使薄片沿着磁场的力线在不存在 凝固装置的效果，并且使用凝固装置至少部分地固化载体，同时在磁场中进一步移动基板，以便在磁场保持磁性薄片的对准的同时将磁性薄片固定在载体中。 提供了一种装置，其具有用于沿着用于对准磁片的磁体组件移动基板的带。 该设备还包括固化装置，例如UV或电子束源，以及在磁体组件的一部分上方的盖，用于保护薄片免受固化装置的影响。

公开(公告)号：US11230127B2

公开(公告)日：2022-01-25

申请号：US16113977

申请日：2018-08-27

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes

IPC: B41M1/00 ,  B05D3/00 ,  B05D5/06 ,  B41F11/02 ,  B41M3/14 ,  B41M5/00 ,  B42D25/29 ,  B41M3/00 ,  B41F23/00 ,  B42D25/369

Abstract: The invention relates to a method of aligning magnetic flakes, which includes: coating a substrate with a carrier having the flakes dispersed therein, moving the substrate in a magnetic field so as to align the flakes along force lines of the magnetic field in the absence of an effect from a solidifying means, and at least partially solidifying the carrier using a solidifying means while further moving the substrate in the magnetic field so as to secure the magnetic flakes in the carrier while the magnetic field maintains alignment of the magnetic flakes. An apparatus is provided, which has a belt for moving a substrate along a magnet assembly for aligning magnetic flakes. The apparatus also includes a solidifying means, such as a UV- or e-beam source, and a cover above a portion of the magnet assembly for protecting the flakes from the effect of the solidifying means.

公开(公告)号：US10481100B2

公开(公告)日：2019-11-19

申请号：US15951686

申请日：2018-04-12

Applicant: VIAVI Solutions Inc.

Inventor： Benjamin F. Catching ,  Marc K. Von Gunten ,  Curtis R. Hruska ,  Paula Smith ,  Paul G. Coombs

IPC: G01N21/85 ,  G01J3/02 ,  G01J3/12 ,  G01N21/27

Abstract: Increasing the precision of process monitoring may be improved if the sensors take the form of traveling probes riding along with the flowing materials in the manufacturing process rather than sample only when the process moves passed the sensors fixed location. The probe includes an outer housing hermetically sealed from the flowing materials, and a light source for transmitting light through a window in the housing onto the flowing materials. A spatially variable optical filter (SVF) captures light returning from the flowing materials, and separates the captured light into a spectrum of constituent wavelength signals for transmission to a detector array, which provides a power reading for each constituent wavelength signal.

公开(公告)号：US20190299691A1

公开(公告)日：2019-10-03

申请号：US16434990

申请日：2019-06-07

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes

IPC: B41M3/14 ,  B42D25/29 ,  B42D25/378

Abstract: A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.

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：US20160187546A1

公开(公告)日：2016-06-30

申请号：US14986293

申请日：2015-12-31

Applicant: Viavi Solutions Inc.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes ,  Alberto Argoitia ,  Roger W. Phillips

IPC: G02B5/09 ,  B42D25/369 ,  G02B27/00

CPC classification number: B42D25/369 ,  B05D3/207 ,  B41M3/148 ,  B42D25/29 ,  B42D2033/16 ,  B42D2035/20 ,  G02B5/09 ,  G02B26/026 ,  G02B27/0025 ,  G09F3/0376 ,  Y10T428/24802 ,  Y10T428/25

Abstract: A printed image is disclosed wherein the image may be in the form of an array of magnetically aligned platelets or flakes that may by uniform in shape and size and wherein the flakes are arranged in a particularly manner to form optically illusive images useful as security devices, or useful in beam steering applications. In one embodiment of this invention printed array is disclosed a plurality of concentric rings of magnetically aligned platelets disposed upon a substrate in the form of a Fresnel structure, preferably a Fresnel reflector. Advantageously, since the magnetic field can be controlled with respect to strength and direction, one can easily design a field that will correct for spherical aberration that would otherwise be present in a typical Fresnel reflector. In other embodiments of the invention optically illusive images of funnels, domes and cones are printed.

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.