Patents by Inventor Adam Lister

Adam Lister 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: 20250052683
    Abstract: There is provided a method of identifying one or more substances in a sample by: illuminating the sample with light of each of a plurality of different excitation modes; measuring an intensity and/or polarisation of light from the sample at a plurality of wavelengths to obtain a measured spectrum for each of the excitation modes; and identifying one or more substances in the sample using the measured spectra together, wherein: the excitation modes differ in one or both of wavelength and polarisation; and the identifying of the one or more substances uses contributions to the measured spectra from a plurality of photophysical processes in the sample including inelastic scattering of light. An apparatus suitable for carrying out the method is also provided.
    Type: Application
    Filed: December 7, 2022
    Publication date: February 13, 2025
    Applicant: UNIVERSITY OF SOUTHAMPTON
    Inventors: Sumeet MAHAJAN, Jeremy WEBB, Adam LISTER, Callum HIGHMORE, George DEVITT, Niall HANRAHAN
  • Publication number: 20220001686
    Abstract: An optical device is disclosed, comprising; a colour shifting layer that exhibits different colours dependent on the angle of incidence of incident light, and; an array of substantially transparent microstructures covering at least a part of the colour shifting layer and configured to modify the angle of light incident to, and reflected from, the colour shifting layer, said array of microstructures arranged in accordance with a plurality of pixels of a colour image to be exhibited by the optical device, each pixel exhibiting a uniform colour, wherein; the array of microstructures comprises at least first and second sub-arrays of microstructures corresponding to respective first and second colour channels, each sub-array covering an area within a pixel corresponding to the proportion of the respective colour channel within the pixel such that the pixel exhibits the uniform colour, and further wherein; the microstructures of the first sub-array are configured to modify the angle of light incident to, and reflec
    Type: Application
    Filed: March 29, 2019
    Publication date: January 6, 2022
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Adam LISTER, John GODFREY
  • Patent number: 11059319
    Abstract: A method of manufacturing an image pattern for a security device includes providing a metallised substrate; applying a first photosensitive resist layer to a substrate first metal layer exposing the resist layer to radiation; exposing the resist layer to a first reactant substance; activating a cross linking agent in the resist layer; exposing first and second pattern elements of the resist layer to radiation of a wavelength to which the resist layer is responsive whereupon newly-exposed first pattern elements of the first photosensitive resist layer react, resulting in increased solubility by the second etchant substance, the second pattern elements remaining relatively insoluble by the second etchant substance; and applying first and second etchant substances to the substrate whereupon the first pattern elements of both the first resist layer and the first metal layer are dissolved, the remaining second pattern elements of the first metal layer forming an image pattern.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: July 13, 2021
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam Lister
  • Patent number: 10981411
    Abstract: A method of manufacturing an image element array for a security device is disclosed.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: April 20, 2021
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Adam Lister, Brian William Holmes
  • Patent number: 10766293
    Abstract: A method of manufacturing a security device includes: a) providing a depth map of a macroimage depicting a three-dimensional object, the depth map representing the depth of each part of the three-dimensional object relative to a reference plane by different colours and/or different tones of one colour; b) segmenting the depth map into a plurality of regions based on the colours and/or tones of the depth map; c) for each region, creating a respective microimage element array; and d) providing a sampling element array of a predetermined pitch and orientation. The pitch and/or orientation of each respective microimage element array is different, and is configured such that the magnified versions of the microimage elements generated in any one of the regions have a different apparent depth relative to those generated in the other region(s), so as to form a three-dimensional representation of the macroimage.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: September 8, 2020
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam Lister
  • Patent number: 10650480
    Abstract: A method of making a security device, comprising: forming an array of primary focusing elements on a first region of a focusing element support layer, by applying at least one transparent curable material either to the focusing element support layer or to a casting tool carrying a surface relief over an area which includes at least the first region, the surface relief comprising portions corresponding to the primary focusing elements; forming the transparent curable material(s) with the casting tool; and curing the transparent curable material(s) so as to retain the surface relief in the first region; wherein the surface relief further includes a plurality of structures of greater depth than the height of the primary focusing elements such that the cured transparent material(s) include a plurality of features protruding above the height of the primary focusing elements between primary focusing elements of the array.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: May 12, 2020
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam Lister
  • Publication number: 20200139742
    Abstract: An optical device is disclosed, comprising: a colour layer which comprises elongate strips of at least two different colours alternating with one another periodically along a direction of colour periodicity, the elongate strips extending along the direction which is orthogonal to the direction of colour periodicity; and a light redirecting layer overlapping the colour layer, and defining at least a first image to be exhibited by the optical device.
    Type: Application
    Filed: May 23, 2018
    Publication date: May 7, 2020
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Patent number: 10569592
    Abstract: A security device is provided. The security device comprises an array of elongate focusing structures, the elongate axes of which are aligned along a first direction, the elongate focusing structures being arranged parallel to one another periodically along a second direction which is orthogonal to the first direction, each elongate focusing structure having an optical footprint of which different elongate strips will be directed to the viewer in dependence on the viewing angle, the centre line of each optical footprint being parallel with the first direction. An array of image elements overlap the array of elongate focusing structures, the array of image elements representing elongate image slices of at least two respective images, each image slice comprising one or more image elements, and at least one image slice of each respective image being located at least partially in the optical footprint of each elongate focusing structure.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: February 25, 2020
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam Lister
  • Patent number: 10543710
    Abstract: A security device is provided including a first pattern of elements and a second, overlapping, pattern of elements spaced by a transparent layer, the first and second patterns in combination obstructing the passage of light transmitted to a viewer through the device to a varying degree depending on the viewing position. The first and second patterns of elements are configured such that a first region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a first tilt axis, and a second region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a second tilt axis which is not parallel to the first tilt axis.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 28, 2020
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Robert Whiteman, Alice Smith, Adam Lister
  • Publication number: 20190322117
    Abstract: A method of manufacturing an image pattern for a security device includes providing a metallised substrate; applying a first photosensitive resist layer to a substrate first metal layer exposing the resist layer to radiation; exposing the resist layer to a first reactant substance; activating a cross linking agent in the resist layer; exposing first and second pattern elements of the resist layer to radiation of a wavelength to which the resist layer is responsive whereupon newly-exposed first pattern elements of the first photosensitive resist layer react, resulting in increased solubility by the second etchant substance, the second pattern elements remaining relatively insoluble by the second etchant substance; and applying first and second etchant substances to the substrate whereupon the first pattern elements of both the first resist layer and the first metal layer are dissolved, the remaining second pattern elements of the first metal layer forming an image pattern.
    Type: Application
    Filed: April 19, 2017
    Publication date: October 24, 2019
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Publication number: 20190291498
    Abstract: A method of manufacturing an image pattern for a security device is disclosed.
    Type: Application
    Filed: May 17, 2017
    Publication date: September 26, 2019
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Publication number: 20190275824
    Abstract: A method of manufacturing a security device includes: a) providing a depth map of a macroimage depicting a three-dimensional object, the depth map representing the depth of each part of the three-dimensional object relative to a reference plane by different colours and/or different tones of one colour; b) segmenting the depth map into a plurality of regions based on the colours and/or tones of the depth map; c) for each region, creating a respective microimage element array; and d) providing a sampling element array of a predetermined pitch and orientation. The pitch and/or orientation of each respective microimage element array is different, and is configured such that the magnified versions of the microimage elements generated in any one of the regions have a different apparent depth relative to those generated in the other region(s), so as to form a three-dimensional representation of the macroimage.
    Type: Application
    Filed: July 4, 2017
    Publication date: September 12, 2019
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Publication number: 20190193457
    Abstract: A method of manufacturing an image array for an optical device, comprising: (a) generating a plurality of different mask images by, for each of at least two different images, the at least two images collectively including parts in at least two different colours: (a1) providing a pixelated version of the image comprising a plurality of image pixels, each image pixel exhibiting a uniform colour; (a2) for each image pixel of the pixelated image, creating a corresponding mask pixel based on the colour of the respective image pixel, each mask pixel comprising an arrangement of one or more mask regions and/or one or more void regions, different arrangements of the one or more mask regions and/or one or more void regions in different ones of the mask pixels defining different respective colours; (a3) arranging the mask pixels in accordance with the positions of their corresponding image pixels in the pixelated image to form a mask image; (b) interlacing the plurality of different mask images, by dividing each mask i
    Type: Application
    Filed: August 10, 2017
    Publication date: June 27, 2019
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Publication number: 20190176507
    Abstract: A security device is provided. The security device comprises an array of elongate focusing structures, the elongate axes of which are aligned along a first direction, the elongate focusing structures being arranged parallel to one another periodically along a second direction which is orthogonal to the first direction, each elongate focusing structure having an optical footprint of which different elongate strips will be directed to the viewer in dependence on the viewing angle, the centre line of each optical footprint being parallel with the first direction. An array of image elements overlap the array of elongate focusing structures, the array of image elements representing elongate image slices of at least two respective images, each image slice comprising one or more image elements, and at least one image slice of each respective image being located at least partially in the optical footprint of each elongate focusing structure.
    Type: Application
    Filed: May 2, 2017
    Publication date: June 13, 2019
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Patent number: 10300730
    Abstract: A method of manufacturing an image element array includes: providing a production tool having a surface pattern of ink-receptive elements spaced by areas which are not, the ink-receptive elements defining the array image elements; applying a multi-colored first image formed of a inks to only the ink-receptive elements; and transferring only the portions of the multi-colored first image corresponding to the image elements from the production tool to a substrate. An image element array is formed on the substrate. The production tool surface pattern is configured such that when viewing and image element arrays overlap, each viewing element within an image element array first region directs light from a respective image element or from a respective gap. The viewing angle in the first region directs light from either the array or the gaps.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: May 28, 2019
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventors: John Godfrey, Adam Lister
  • Publication number: 20180304669
    Abstract: A method of manufacturing an image element array includes: providing a production tool having a surface pattern of ink-receptive elements spaced by areas which are not, the ink-receptive elements defining the array image elements; applying a multi-coloured first image formed of a inks to only the ink-receptive elements; and transferring only the portions of the multi-coloured first image corresponding to the image elements from the production tool to a substrate. An image element array is formed on the substrate. The production tool surface pattern is configured such that when viewing and image element arrays overlap, each viewing element within an image element array first region directs light from a respective image element or from a respective gap. The viewing angle in the first region directs light from either the array or the gaps.
    Type: Application
    Filed: November 7, 2016
    Publication date: October 25, 2018
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: John GODFREY, Adam LISTER
  • Publication number: 20180215187
    Abstract: A security device is provided including a first pattern of elements and a second, overlapping, pattern of elements spaced by a transparent layer, the first and second patterns in combination obstructing the passage of light transmitted to a viewer through the device to a varying degree depending on the viewing position. The first and second patterns of elements are configured such that a first region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a first tilt axis, and a second region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a second tilt axis which is not parallel to the first tilt axis.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 2, 2018
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Robert WHITEMAN, Alice SMITH, Adam LISTER
  • Publication number: 20180178577
    Abstract: A method of making a security device, comprising: forming an array of primary focusing elements on a first region of a focusing element support layer, by applying at least one transparent curable material either to the focusing element support layer or to a casting tool carrying a surface relief over an area which includes at least the first region, the surface relief comprising portions corresponding to the primary focusing elements; forming the transparent curable material(s) with the casting tool; and curing the transparent curable material(s) so as to retain the surface relief in the first region; wherein the surface relief further includes a plurality of structures of greater depth than the height of the primary focusing elements such that the cured transparent material(s) include a plurality of features protruding above the height of the primary focusing elements between primary focusing elements of the array.
    Type: Application
    Filed: July 11, 2016
    Publication date: June 28, 2018
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventor: Adam LISTER
  • Publication number: 20180154677
    Abstract: A method of manufacturing an image element array for a security device is disclosed.
    Type: Application
    Filed: June 9, 2016
    Publication date: June 7, 2018
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Adam LISTER, Brian William HOLMES
  • Patent number: 9902186
    Abstract: A security device is provided including a first pattern of elements and a second, overlapping, pattern of elements spaced by a transparent layer, the first and second patterns in combination obstructing the passage of light transmitted to a viewer through the device to a varying degree depending on the viewing position. The first and second patterns of elements are configured such that a first region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a first tilt axis, and a second region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a second tilt axis which is not parallel to the first tilt axis.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: February 27, 2018
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Robert Whiteman, Alice Smith, Adam Lister