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: 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
  • 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
  • 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: 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
  • 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
  • Publication number: 20190299691
    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.
    Type: Application
    Filed: June 7, 2019
    Publication date: October 3, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
  • Publication number: 20190225005
    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: Application
    Filed: April 1, 2019
    Publication date: July 25, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
  • Patent number: 10343436
    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.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: July 9, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
  • Publication number: 20190126658
    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: December 18, 2018
    Publication date: May 2, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
  • Patent number: 10259254
    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: January 9, 2013
    Date of Patent: April 16, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
  • Patent number: 10242788
    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.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 26, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Vladimir P. Raksha, Charles T. Markantes, Paul G. Coombs, Roger W. Phillips, Paul T. Kohlmann, Alberto Argoitia, Neil Teitelbaum
  • Patent number: 10232660
    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: July 13, 2015
    Date of Patent: March 19, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs