Patents Assigned to Wavefront Technology
  • Patent number: 10859851
    Abstract: An optical product can be configured to be an anti-counterfeit feature such as a patch, a window, or a thread on a banknote. The optical product can be configured, when illuminated, to reproduce by reflected or refracted light, a 3D image of at least a part of a 3D object. The optical product can include a first surface and a second surface opposite the first surface. The second surface can include a plurality of portions. Each portion can correspond to a point on a surface of the 3D object. Each portion can include features corresponding to non-holographic elements on the optical product. A gradient in the features can correlate to an inclination of the surface of the 3D object at the corresponding point. An orientation of the features can correlate to an orientation of the surface of the 3D object at the corresponding point.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: December 8, 2020
    Assignee: WAVEFRONT TECHNOLOGY, INC.
    Inventors: Christopher Chapman Rich, Phillip Christopher Harvey, Joel Mikael Petersen
  • Patent number: 10850550
    Abstract: A security device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second image without presenting the first image for viewing. At least one first or second segment can include one or more microstructures or one or more nanostructures configured to produce one or more colors for the first or second image.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: December 1, 2020
    Assignee: WAVEFRONT TECHNOLOGY, INC.
    Inventors: Christopher Chapman Rich, Joel Mikael Petersen, Roger Winston Phillips, John Michael Tamkin
  • Patent number: 10838218
    Abstract: A document, product, or package, such as a banknote, passport or the like comprises structures having dichroic effects that change color with viewing angle in both transmission and reflection. Such structures can be useful as security features that counter the ability to effectively use counterfeit documents, products, packages, etc.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: November 17, 2020
    Assignee: WAVEFRONT TECHNOLOGY, INC.
    Inventors: Roger Winston Phillips, Christopher Chapman Rich, Joel Mikael Petersen
  • Patent number: 10795059
    Abstract: Ultra thin Fresnel lenses and methods of forming the same are described herein. An optical element comprising an ultra thin Fresnel lens includes a plurality of Fresnel elements formed on a surface of a substrate. Each of the plurality of Fresnel surface elements has an angled facet portion and a shallow or substantially horizontal portion. The Fresnel surface elements can be formed, for example, by a hot stamp or cold transfer method.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 6, 2020
    Assignee: WAVEFRONT TECHNOLOGY, INC.
    Inventors: Joel Mikael Petersen, Christopher Chapman Rich
  • Patent number: 10252563
    Abstract: An optical product can reproduce a first 3D image of at least part of a first 3D object and a second 3D image of at least part of a second 3D object. The optical product comprises a surface configured, when illuminated, to reproduce by reflected or transmitted light, the first 3D image without reproducing the second 3D image at a first angle of view, and the second 3D image without reproducing the first 3D image at a second angle of view. Each portion of first portions can correspond to a point on a surface of the first 3D object, and comprise first non-holographic features configured to produce at least part of the first 3D image. Each portion of second portions can correspond to a point on a surface of the second 3D object, and comprise second non-holographic features configured to produce at least part of the second 3D image.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 9, 2019
    Assignee: WAVEFRONT TECHNOLOGY, INC.
    Inventors: Christopher Chapman Rich, Joel Mikael Petersen, John Michael Tamkin, Roger Winston Phillips, Phillip Christopher Harvey
  • Patent number: 9851070
    Abstract: Implementations disclosed herein include optical sheets comprising one or more regions including one or more optical elements. Each of the one or more optical elements includes a plurality of microstructures. The one or more optical elements can be configured to tailor the radiation pattern output from a source of illumination. The one or more optical element can be further configured to impart a visual appearance to the optical sheet that is different from a standard lenticular or prismatic sheet. In various implementations, the one or more regions can be demarcated from each other or the surrounding by borders. The borders of the one or more regions can be configured to form one or more letters, one or more symbols or logos for identification and/or security purposes. Various implementations of the optical sheet can include nano-particles in addition to the optical elements to enhance the aesthetic quality of the optical film.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: December 26, 2017
    Assignee: Wavefront Technology, Inc.
    Inventors: Christopher Chapman Rich, Phillip Christopher Harvey, Eric William Hearn Teather, Joel Mikael Petersen
  • Patent number: 9777571
    Abstract: A method for determining along relatively uniformly spaced apart parallel first and second wellbores situated in an underground hydrocarbon-containing formation, regions within the formation, including in particular regions between such wellbores, to inject a fluid at a pressure above formation dilation pressure, to stimulate production of oil into the second of the two wellbores, and subsequently injecting fluid at pressures above formation dilation pressures at the discrete regions along such wellbores determined to be in need. An initial information-gathering procedure is conducted, wherein fluid is supplied under a pressure less than formation dilation or fracture pressure, to discrete intervals along a first wellbore, and sensors in the second wellbore measure and data is recorded regarding the ease of penetration of such fluid into the various regions of the formation intermediate the two wellbores.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 3, 2017
    Assignees: Husky Oil Operations Limited, Wavefront Technology Solutions Inc.
    Inventors: Brett C. Davidson, Lawrence J. Frederick, Tor Meling
  • Patent number: 9611737
    Abstract: A method for determining along a length of a wellbore situated in an underground hydrocarbon-containing formation, regions within the formation to inject a fluid at a pressure above formation dilation pressure, to stimulate production of oil into the wellbore. An initial information-gathering procedure is conducted prior to formation dilation/fracturing, wherein fluid is supplied under a pressure less than formation dilation or fracture pressure, to discrete intervals along the wellbore, and sensors measure and data is recorded regarding the ease of penetration of such fluid into the various regions of the formation. Regions of the formation exhibiting poor ease of fluid penetration or regions of higher oil saturation, are thereafter selected for subsequent stimulation or dilation, at pressures above formation dilation pressures. Where initial fluid pressures and/or formation dilation pressures are provided in cyclic pulses, a downhole tool is disclosed for such purpose.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: April 4, 2017
    Assignees: Husky Oil Operations Limited, Wavefront Technology Solutions Inc.
    Inventors: Brett C. Davidson, Lawrence J. Frederick, Tor Meling
  • Patent number: 8194315
    Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises embossing at least a first side of a first substrate to produce an optically functional material and then cutting the optically functional material into pieces to produce a plurality of engineered particles. The plurality of engineered particles may then be deposited on a second substrate to produce a substantially homogeneous optical appearance of the projection screen.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: June 5, 2012
    Assignees: ReaID Inc., Wavefront Technology, Inc.
    Inventors: Gary D. Sharp, David A. Coleman, Joel Petersen, Christopher Rich, Raymond Jacob Lewandowski
  • Publication number: 20110211911
    Abstract: A method is taught for applying vacuum pulses to enhance multiphase vacuum extraction of vapours and liquids from contaminated subsurface wells. The method involves first initiating continuous multiphase vacuum extraction from the subsurface well. Then one or more short vacuum pulses are imparted to the subsurface environment, to momentarily interrupt flow of vapours and liquids in the subsurface well. Time is allowed for a vacuum to build up in the extraction apparatus; and then the vacuum build up is rapidly released to momentarily increase velocity of vapours and liquids being extracted from the subsurface well. A device is further taught for imparting vacuum pulses to enhance multiphase extraction from contaminated subsurface wells, comprising a vacuum pulse tool having an inlet in fluid communication with the subsurface well and an outlet and one or more multiphase extraction vacuum pumps, connected to the outlet of the vacuum pulse tool.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 1, 2011
    Applicant: Wavefront Technology Solutions Inc.
    Inventors: Andre Michael Masse, Patrick Moss Hicks, Brett Charles Davidson
  • Publication number: 20110149389
    Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises embossing at least a first side of a first substrate to produce an optically functional material and then cutting the optically functional material into pieces to produce a plurality of engineered particles. The plurality of engineered particles may then be deposited on a second substrate to produce a substantially homogeneous optical appearance of the projection screen.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 23, 2011
    Applicants: REALD INC., WAVEFRONT TECHNOLOGY, INC.
    Inventors: Gary D. Sharp, David A. Coleman, Joel Petersen, Christopher Rich, Raymond Jacob Lewandowski
  • Patent number: 7430358
    Abstract: A backlit light display comprises a light guide panel, a prismatic film, an asymmetric top diffuser and an LCD. A linear light source is disposed along a side face of the light guide panel. Light from the linear light source is transmitted though the light guide panel where it is spread and uniformly output through a front face to the prismatic film. Light incident on the prismatic film is redirected more along a first direction than along a second direction. This light is directed more normal to the LCD. An asymmetric diffuser is applied between the prismatic film and the LCD panel to smear the periodic information from the prismatic film and eliminate the Moiré fringe pattern resulting from interference between the periodic structure of the prismatic film and the periodic arrangement of pixels in the LCD. The asymmetric diffuser is aligned with respect to the prismatic film such that it scatters and spreads light more in a second direction than the first direction.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: September 30, 2008
    Assignee: Wavefront Technology, Inc.
    Inventors: Jun Qi, Joel Mikael Petersen, Christopher Chapman Rich
  • Patent number: 7429437
    Abstract: A diffractive optical element such as a diffuser, diffraction grating, and/or hologram, can be manufactured by using a surface relief pattern on a surface of a surface relief tool. A layer of curable material is physically contacted with the surface relief pattern on the surface of the surface relief tool to thereby imprint the pattern on a surface of the layer. Diffractive features are formed in the layer by propagating energy through the surface relief tool and into the layer such that refractive index variations corresponding to the pattern are created in the layer. The resultant product is a diffractive optical element comprising a layer of material having diffractive features formed by a predetermined pattern of refractive index variations. The diffractive features originate at an undulating boundary and extend only from one side of the boundary into the material. The undulating boundary has an undulating pattern that corresponds to the predetermined pattern of refractive index variations.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: September 30, 2008
    Assignee: Wavefront Technology, Inc.
    Inventors: Chris Rich, Joel Petersen
  • Patent number: 7298533
    Abstract: An optical layer comprises a sheet of material having a surface. The surface comprises a plurality of optical elements. The optical elements are comprised of microscopic patterns in the surface that cooperate to produce an image. Each of the elements has a focal length. At least some of the focal lengths are significantly different from other focal lengths, such that some portions of the surface appear to be closer to a viewer than other portions of the surface.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: November 20, 2007
    Assignee: Wavefront Technology
    Inventors: Joel M. Petersen, Christopher Chapman Rich
  • Patent number: 6998196
    Abstract: A diffractive optical element such as a diffuser, diffraction grating, and/or hologram, can be manufactured by using a surface relief pattern on a surface of a surface relief tool. A layer of curable material is physically contacted with the surface relief pattern on the surface of the surface relief tool to thereby imprint the pattern on a surface of the layer. Diffractive features are formed in the layer by propagating energy through the surface relief tool and into the layer such that refractive index variations corresponding to the pattern are created in the layer. The resultant product is a diffractive optical element comprising a layer of material having diffractive features formed by a predetermined pattern of refractive index variations. The diffractive features originate at an undulating boundary and extend only from one side of the boundary into the material. The undulating boundary has an undulating pattern that corresponds to the predetermined pattern of refractive index variations.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: February 14, 2006
    Assignee: Wavefront Technology
    Inventors: Chris Rich, Joel Petersen