Patents by Inventor Brian William Holmes
Brian William Holmes 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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Patent number: 8861055Abstract: A security device having a lenticular device that includes an array of lenticular focusing elements located over a corresponding array of sets of image strips such that at different viewing directions, a corresponding image strip from each set is viewed via respective ones of the lenticular focusing elements wherein the image strips are defined at least in part by a relief structure.Type: GrantFiled: October 27, 2010Date of Patent: October 14, 2014Assignee: De La Rue International LimitedInventors: Brian William Holmes, Lawrence George Commander
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Patent number: 8794530Abstract: An optically variable magnetic stripe assembly comprises a magnetic layer (5); an optically variable effect generating layer (1) over the magnetic layer; and a metallic reflecting layer (3) adjacent the optically variable effect generating layer and comprising an array of spaced metallic regions shaped as regular polygons.Type: GrantFiled: January 23, 2008Date of Patent: August 5, 2014Assignee: Opsec Security Group Inc.Inventors: Brian William Holmes, Mark Deakes
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Patent number: 8773743Abstract: A security device comprising at least first and second superposed optically variable effect generating structures (3-5, 31-51), each having a surface relief microstructure, the second optically variable effect generating structure being viewable through the first.Type: GrantFiled: November 29, 2012Date of Patent: July 8, 2014Assignee: De La Rue International LimitedInventor: Brian William Holmes
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Patent number: 8551673Abstract: An optically variable magnetic stripe assembly includes a magnetic layer, an optically variable effect generating layer over the magnetic layer, and an electrically non-conductive reflective layer between the magnetic layer and the optically variable effect generating layer.Type: GrantFiled: February 4, 2008Date of Patent: October 8, 2013Assignee: De La Rue International LimitedInventors: Brian William Holmes, Malcolm Robert Murray Knight, David Allen Stone
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Publication number: 20130107335Abstract: A security device comprising at least first and second superposed optically variable effect generating structures (3-5, 31-51), each having a surface relief microstructure, the second optically variable effect generating structure being viewable through the first.Type: ApplicationFiled: November 29, 2012Publication date: May 2, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William HOLMES
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Publication number: 20130106092Abstract: A security device including a substrate carrying a surface relief optically variable effect generating structure formed by the super position of three diffractive image generating structures (rear, surface and front planes) which respond to respectively different colour components or wavelength ranges of white light to generate a first, substantially achromatic image or background pattern located in a plane spaced from the surface of the substrate.Type: ApplicationFiled: May 6, 2011Publication date: May 2, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Publication number: 20130056971Abstract: A moiré magnification device including a transparent substrate carrying: an array of micro-focusing elements, the focusing elements defining a focal plane; a first array of microimage elements in a first colour and a second array of microimage elements in a second colour, the first and second arrays of microimage elements are located in a plane substantially coincident with the focal plane of the focusing elements, the second array of microimage elements being laterally offset from the first. The pitches of the micro-focusing elements, first and second arrays of microimage elements and their relative locations are such that the array of micro-focusing elements cooperates with each of the first and second arrays of microimage elements to generate respective magnified versions of the microimage elements due to the moiré effect. An interruption zone is perceived between the magnified versions of the first and second microimage arrays, respectively, and exhibits no magnified versions.Type: ApplicationFiled: March 1, 2011Publication date: March 7, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Publication number: 20130050818Abstract: A moiré magnification device includes a transparent substrate, the transparent substrate carrying a regular array of micro-focusing elements on a first surface, where the focusing elements define a focal plane, and a corresponding array of microimage element unit cells located in a plane substantially coincident with the focal plane of the focusing elements, where each unit cell includes at least two microimage components. The pitches of the micro-focusing elements and the array of microimage element unit cells and their relative locations are such that the array of micro-focusing elements cooperates with the array of microimage element unit cells to generate magnified versions of the microimage components due to the moiré effect.Type: ApplicationFiled: March 1, 2011Publication date: February 28, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Publication number: 20130050819Abstract: A moire magnification device is disclosed, including a transparent substrate carrying: a regular array of micro-focusing elements on a first surface, the focusing elements defining a focal plane; and a corresponding first array of microimage elements located in a plane substantially coincident with the focal plane of the focusing elements. The pitches of the micro-focusing elements and the array of microimage elements and their relative locations are such that the array of micro-focusing elements cooperates with the array of microimage elements to generate magnified version of the microimage elements due to the moire effect. Along at least one axis across at least a first region of the device, the pitch between the microimage elements and/or between the micro-focusing elements continuously varies across the respective array(s), whereby the moire effect causes different degrees of magnification of the image elements to occur.Type: ApplicationFiled: March 1, 2011Publication date: February 28, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Publication number: 20130044362Abstract: An optical device comprises a transparent substrate having: an array of micromirrors on one surface of the substrate; and a corresponding array of microimage elements, the micromirrors presenting convex surfaces to the microimage elements whereby each convex surface causes ambient light to pass through the microimage element array from a virtual focus, the arrangement of the microimage elements and micromirrors being such that they cooperate to generate a lenticular type or a moiré magnification effect.Type: ApplicationFiled: March 1, 2011Publication date: February 21, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventors: Lawrence George Commander, Brian William Holmes
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Publication number: 20130043670Abstract: A security device includes a transparent, coloured element in a first region of the device and in a surface of which a first optically variable effect generating relief structure is formed. A reflection enhancing layer extends over the first optically variable effect generating relief microstructure and follows the contour of the relief, the reflection enhancing layer also being provided in a second region of the device laterally offset from the first region.Type: ApplicationFiled: February 24, 2011Publication date: February 21, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Publication number: 20130038942Abstract: A moiré magnification device includes a transparent substrate carrying: a regular array of micro-focusing elements, that define a focal plane, on a first surface; a corresponding first array of microimage elements in a first colour located in a plane substantially coincident with the focal plane; and a corresponding second array of microimage elements, in a second colour, located in a plane substantially coincident with the focal plane. The pitches of the micro-focusing elements and first and second arrays and their relative locations are such that the array of micro-focusing elements cooperates with each of the first and second arrays to generate magnified versions of the microimage elements due to the moiré effect. The magnified version of the first array is viewed against a background defined by the magnified version of the second array, the first array exhibiting movement relative to the background when the device is tilted.Type: ApplicationFiled: March 1, 2011Publication date: February 14, 2013Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Patent number: 8363323Abstract: A security device comprising at least first and second superposed optically variable effect generating structures (3-5, 31-51), each having a surface relief microstructure, the second optically variable effect generating structure being viewable through the first.Type: GrantFiled: April 3, 2003Date of Patent: January 29, 2013Assignee: De la Rue International LimitedInventor: Brian William Holmes
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Publication number: 20120274998Abstract: A security device having a lenticular device that includes an array of lenticular focusing elements located over a corresponding array of sets of image strips such that at different viewing directions, a corresponding image strip from each set is viewed via respective ones of the lenticular focusing elements wherein the image strips are defined at least in part by a relief structure.Type: ApplicationFiled: October 27, 2010Publication date: November 1, 2012Applicant: DE LA RUE INTERNATIONAL LIMITEDInventors: Brian William Holmes, Lawrence George Commander
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Publication number: 20120268819Abstract: A security device includes at least two lenticular devices, each lenticular device having an array of elongate lenticular focusing elements located above respective sets of image strips, wherein the elongate directions in which the lenticular focussing elements of the two lenticular devices extend are different.Type: ApplicationFiled: October 27, 2010Publication date: October 25, 2012Applicant: DE LA RUE INTERNATIONAL LIMITEDInventors: Lawrence George Commander, Brian William Holmes
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Publication number: 20120268598Abstract: A lenticular device includes an array of lenticular focusing elements located over a corresponding array of pairs of image strips such that, in a first viewing direction, a first image strip from each pair is viewed by respective ones of the lenticular focusing elements and, in a second viewing direction, different from the first, a second image strip from eachpair is viewed by respective ones of the lenticular focusing elements, One of each pair of image strips has portions defining a first image in a first colour and a second image in a second colour respectively, and the other of each pair of image strips has portions defining the first image in the second colour and the second image in the first colour respectively, whereby on tilting the device, a colour switch is observed between the first and second images.Type: ApplicationFiled: October 27, 2010Publication date: October 25, 2012Applicant: DE LA RUE INTERNATIONAL LIMITEDInventors: Brian William Holmes, Lawrence George Commander
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Patent number: 8211596Abstract: A method of forming a security device comprises: a) providing an undeveloped photoresist layer on an electrically conductive layer; b) forming a first diffractive pattern in the undeveloped photoresist layer using optical-interferometry; c) forming a second diffractive pattern in the undeveloped photoresist layer using electron beam lithography; and d) thereafter developing the photoresist layer.Type: GrantFiled: January 19, 2007Date of Patent: July 3, 2012Assignee: De La Rue International Ltd.Inventor: Brian William Holmes
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Publication number: 20110239886Abstract: A security device including a transparent base layer having a surface provided with an optically variable relief microstructure; a transparent high refractive index layer on the surface of the base layer, the high refractive index layer conforming to the surface relief microstructure; and a reflective metal layer printed on the transparent high refractive index layer. The metal layer is printed in the form of a pattern. The thickness of the transparent high refractive index layer is selected so as to achieve constructive interference of light with a wavelength ? in the range 450-650 nm reflected at each surface of the high refractive index layer.Type: ApplicationFiled: October 26, 2009Publication date: October 6, 2011Applicant: DE LA RUE INTERNATIONAL LIMITEDInventor: Brian William Holmes
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Patent number: 8027093Abstract: A security device comprises a substrate having an array of microlenses on one side and one or more corresponding arrays of microimages on the other side. The microimages are located at a distance from the microlenses substantially equal to the focal length of the microlenses. The substrate is sufficiently transparent to enable light to pass through the microlenses so as to reach the microimages. Each microimage is defined by an anti-reflection structure on the substrate formed by a periodic array of identical structural elements, light passing through a substrate and impinging on the microimages being reflected to a different extent than light which does not impinge on the microimages thereby rendering the microimages visible.Type: GrantFiled: October 4, 2010Date of Patent: September 27, 2011Assignee: De La Rue International LimitedInventors: Lawrence George Commander, Christopher John Eastell, Roland Isherwood, Brian William Holmes
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Publication number: 20110122499Abstract: A security device comprises a substrate having an array of microlenses on one side and one or more corresponding arrays of microimages on the other side. The microimages are located at a distance from the microlenses substantially equal to the focal length of the microlenses. The substrate is sufficiently transparent to enable light to pass through the microlenses so as to reach the microimages. Each microimage is defined by an anti-reflection structure on the substrate formed by a periodic array of identical structural elements, light passing through a substrate and impinging on the microimages being reflected to a different extent than light which does not impinge on the microimages thereby rendering the microimages visible.Type: ApplicationFiled: October 4, 2010Publication date: May 26, 2011Applicant: De La Rue International LimitedInventors: Lawrence George Commander, Christopher John Eastell, Roland Isherwood, Brian William Holmes