公开(公告)号：US20220146308A1

公开(公告)日：2022-05-12

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 ,  G01N21/25 ,  G01N21/85 ,  G01J3/26 ,  G02B5/28 ,  G02B5/20 ,  G01J3/28 ,  G02B5/22 ,  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：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.

公开(公告)号：US20200338922A1

公开(公告)日：2020-10-29

申请号：US16857845

申请日：2020-04-24

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  Cornells Jan Delst ,  Paul G. Coombs

IPC: B42D25/369 ,  B42D25/328

Abstract: An optical device comprising a structured substrate; a reflective layer on the structured substrate; and a coating with magnetic flakes on the reflective layer is disclosed. A method of making and using an optical device is also disclosed.

公开(公告)号：US10479901B2

公开(公告)日：2019-11-19

申请号：US15812824

申请日：2017-11-14

Applicant: VIAVI SOLUTIONS INC.

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

IPC: H01F1/01 ,  C09D17/00 ,  C09D11/037 ,  C09D5/32 ,  C09D7/62 ,  C09C1/00 ,  H01F1/28 ,  H01F1/03 ,  C09D7/40 ,  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：US10259254B2

公开(公告)日：2019-04-16

申请号：US13737836

申请日：2013-01-09

Applicant: Viavi Solutions Inc.

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

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

Abstract: An article includes a substrate and a graphical component forming an image and an optical component which includes magnetic pigment flakes aligned so as to form a frame pattern which surrounds the image. When light is incident upon the pigment flakes from a light source, light reflected from the frame pattern forms a dynamic frame which surrounds the image and appears to move as the substrate is tilted with respect to the light source. The image appears to be stationary when the dynamic frame appears to move.

公开(公告)号：US10232660B2

公开(公告)日：2019-03-19

申请号：US14797864

申请日：2015-07-13

Applicant: VIAVI SOLUTIONS INC.

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

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

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：US09522402B2

公开(公告)日：2016-12-20

申请号：US14681551

申请日：2015-04-08

Applicant: Viavi Solutions Inc.

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

IPC: B41F11/02 ,  B41M3/14 ,  B05B5/00 ,  B05D3/00 ,  B05D5/06 ,  B41M3/00 ,  B41M5/00 ,  B42D25/29 ,  B41F23/00

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.

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。

公开(公告)号：US12064987B2

公开(公告)日：2024-08-20

申请号：US16857845

申请日：2020-04-24

Applicant: VIAVI SOLUTIONS INC.

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

IPC: B42D25/369 ,  B42D25/328 ,  B42D25/29

CPC classification number: B42D25/369 ,  B42D25/328 ,  B42D25/29

Abstract: An optical device comprising a structured substrate; a reflective layer on the structured substrate; and a coating with magnetic flakes on the reflective layer is disclosed. A method of making and using an optical device is also disclosed.

公开(公告)号：US11441041B2

公开(公告)日：2022-09-13

申请号：US16653479

申请日：2019-10-15

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

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.