公开(公告)号：US11787956B2

公开(公告)日：2023-10-17

申请号：US17942557

申请日：2022-09-12

Applicant: VIAVI SOLUTIONS INC.

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

IPC: C09D7/62 ,  H01F1/01 ,  C09C1/00 ,  H01F1/28 ,  C09D5/32 ,  C09D11/037 ,  C09D7/40 ,  C09D17/00 ,  H01F1/03 ,  H01F1/26

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

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：US11198315B2

公开(公告)日：2021-12-14

申请号：US16733081

申请日：2020-01-02

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  John Hynes ,  Laurence Holden ,  Paul G. Coombs

IPC: B42D25/369 ,  B44F1/10 ,  B42D25/342 ,  B42D25/41 ,  B42D25/378 ,  B05D3/00 ,  B05D5/06 ,  C09D5/29 ,  C09D5/36 ,  B41M3/14 ,  C09D11/00 ,  B41M7/00 ,  C09D7/61 ,  B44F1/02 ,  B42D25/29 ,  H01F41/02 ,  B42D25/00

Abstract: In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

公开(公告)号：US20190126658A1

公开(公告)日：2019-05-02

申请号：US16224575

申请日：2018-12-18

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  John Hynes ,  Laurence Holden ,  Paul G. Coombs

IPC: B42D25/369 ,  B42D25/342 ,  B42D25/378 ,  H01F41/02 ,  C09D7/61 ,  B42D25/41 ,  B44F1/02 ,  C09D5/36 ,  C09D5/29 ,  B05D5/06 ,  B05D3/00 ,  C09D11/00 ,  B41M3/14 ,  B41M7/00 ,  B42D25/29 ,  B44F1/10

Abstract: In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

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：US12135239B2

公开(公告)日：2024-11-05

申请号：US17581103

申请日：2022-01-21

Applicant: VIAVI Solutions Inc.

Inventor： Paula Smith ,  Curtis R. Hruska ,  Benjamin F. Catching ,  Paul G. Coombs

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01N21/25 ,  G01N21/85 ,  G02B5/20 ,  G02B5/22 ,  G02B5/28 ,  G02B5/30 ,  G02B6/42

Abstract: An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the Oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

公开(公告)号：US11504990B2

公开(公告)日：2022-11-22

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 ,  B42D25/369

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：US10562333B2

公开(公告)日：2020-02-18

申请号：US16224575

申请日：2018-12-18

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  John Hynes ,  Laurence Holden ,  Paul G. Coombs

IPC: B42D25/29 ,  B42D25/369 ,  B44F1/10 ,  B42D25/342 ,  B42D25/41 ,  B42D25/378 ,  B05D3/00 ,  B05D5/06 ,  C09D5/29 ,  C09D5/36 ,  B41M3/14 ,  C09D11/00 ,  B41M7/00 ,  C09D7/61 ,  B44F1/02 ,  H01F41/02 ,  B42D25/00

Abstract: In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.