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).
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Publication number: 20200338922Abstract: 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: ApplicationFiled: April 24, 2020Publication date: October 29, 2020Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Cornells Jan Delst, Paul G. Coombs
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Publication number: 20200340857Abstract: 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: ApplicationFiled: July 9, 2020Publication date: October 29, 2020Inventors: Paula SMITH, Curtis R. HRUSKA, Benjamin F. CATCHING, Paul G. COOMBS
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Patent number: 10753793Abstract: 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: GrantFiled: August 10, 2018Date of Patent: August 25, 2020Assignee: VIAVI Solutions Inc.Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
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Patent number: 10752042Abstract: 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: GrantFiled: April 1, 2019Date of Patent: August 25, 2020Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
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Publication number: 20200238745Abstract: 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: ApplicationFiled: April 10, 2020Publication date: July 30, 2020Inventors: Cornelis Jan DELST, Vladimir P. RAKSHA, Paul G. COOMBS, Robert B. SARGENT, Michael Ray NOFI
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Patent number: 10718663Abstract: 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: GrantFiled: August 10, 2018Date of Patent: July 21, 2020Assignee: VIAVI Solutions Inc.Inventors: Paula Smith, Curtis R. Hruska, Benjamin F. Catching, Paul G. Coombs
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Publication number: 20200215845Abstract: 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: ApplicationFiled: January 2, 2020Publication date: July 9, 2020Applicant: VIAVI SOLUTION INC.Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
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Publication number: 20200115566Abstract: 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: ApplicationFiled: October 15, 2019Publication date: April 16, 2020Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
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Patent number: 10618340Abstract: 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: GrantFiled: May 16, 2018Date of Patent: April 14, 2020Assignee: VIAVI Solutions Inc.Inventors: Cornelis Jan Delst, Vladmir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi
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Patent number: 10562333Abstract: 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: GrantFiled: December 18, 2018Date of Patent: February 18, 2020Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
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Publication number: 20190351693Abstract: 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: ApplicationFiled: May 16, 2018Publication date: November 21, 2019Inventors: Cornelis Jan DELST, Vladmir P. RAKSHA, Paul G. COOMBS, Robert B. SARGENT, Michael NOFI
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Patent number: 10479901Abstract: 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: GrantFiled: November 14, 2017Date of Patent: November 19, 2019Assignee: Viavi Solutions Inc.Inventors: Vladimir P. Raksha, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
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Patent number: 10481100Abstract: 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: GrantFiled: April 12, 2018Date of Patent: November 19, 2019Assignee: VIAVI Solutions Inc.Inventors: Benjamin F. Catching, Marc K. Von Gunten, Curtis R. Hruska, Paula Smith, Paul G. Coombs
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Publication number: 20190299691Abstract: 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: ApplicationFiled: June 7, 2019Publication date: October 3, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
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Publication number: 20190225005Abstract: 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: ApplicationFiled: April 1, 2019Publication date: July 25, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
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Patent number: 10343436Abstract: 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: GrantFiled: February 16, 2007Date of Patent: July 9, 2019Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
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Publication number: 20190126658Abstract: 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: ApplicationFiled: December 18, 2018Publication date: May 2, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Vladimir P. RAKSHA, John Hynes, Laurence Holden, Paul G. Coombs
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Patent number: 10259254Abstract: 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: GrantFiled: January 9, 2013Date of Patent: April 16, 2019Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs
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Patent number: 10242788Abstract: 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: GrantFiled: May 22, 2017Date of Patent: March 26, 2019Assignee: VIAVI Solutions Inc.Inventors: Vladimir P. Raksha, Charles T. Markantes, Paul G. Coombs, Roger W. Phillips, Paul T. Kohlmann, Alberto Argoitia, Neil Teitelbaum
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Patent number: 10232660Abstract: 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: GrantFiled: July 13, 2015Date of Patent: March 19, 2019Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, John Hynes, Laurence Holden, Paul G. Coombs