Patents by Inventor Paul G. Coombs

Paul G. Coombs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220146308
    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.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 12, 2022
    Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
  • Publication number: 20220063319
    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 Hakes 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.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 3, 2022
    Applicant: VIAVI SOLUTIONS INC
    Inventors: Vladimir P. RAKSHA, John HYNES, Laurence HOLDEN, Paul G. COOMBS
  • Patent number: 11237049
    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.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: February 1, 2022
    Assignee: VIAVI Solutions Inc.
    Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
  • Patent number: 11230127
    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.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: January 25, 2022
    Assignee: VIAVI Solutions Inc.
    Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
  • Patent number: 11198315
    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.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: December 14, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
  • Publication number: 20210252902
    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.
    Type: Application
    Filed: April 15, 2021
    Publication date: August 19, 2021
    Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Paul G. COOMBS, Robert B. SARGENT, Michael Ray NOFI
  • Patent number: 10981410
    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.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: April 20, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Cornelis Jan Delst, Vladimir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi
  • Publication number: 20200340857
    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.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Inventors: Paula SMITH, Curtis R. HRUSKA, Benjamin F. CATCHING, Paul G. COOMBS
  • Publication number: 20200338922
    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.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 29, 2020
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. RAKSHA, Cornells Jan Delst, Paul G. Coombs
  • Patent number: 10753793
    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.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 25, 2020
    Assignee: VIAVI Solutions Inc.
    Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
  • Patent number: 10752042
    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.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: August 25, 2020
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
  • Publication number: 20200238745
    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.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Paul G. COOMBS, Robert B. SARGENT, Michael Ray NOFI
  • Patent number: 10718663
    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.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: July 21, 2020
    Assignee: VIAVI Solutions Inc.
    Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
  • Publication number: 20200215845
    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.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 9, 2020
    Applicant: VIAVI SOLUTION INC.
    Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
  • Publication number: 20200115566
    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.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 16, 2020
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. RAKSHA, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
  • Patent number: 10618340
    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.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 14, 2020
    Assignee: VIAVI Solutions Inc.
    Inventors: Cornelis Jan Delst, Vladmir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi
  • Patent number: 10562333
    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.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: February 18, 2020
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
  • Publication number: 20190351693
    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.
    Type: Application
    Filed: May 16, 2018
    Publication date: November 21, 2019
    Inventors: Cornelis Jan DELST, Vladmir P. RAKSHA, Paul G. COOMBS, Robert B. SARGENT, Michael NOFI
  • Patent number: 10481100
    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.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: November 19, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Benjamin F. Catching, Marc K. Von Gunten, Curtis R. Hruska, Paula Smith, Paul G. Coombs
  • Patent number: 10479901
    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.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: November 19, 2019
    Assignee: Viavi Solutions Inc.
    Inventors: Vladimir P. Raksha, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs