Patents by Inventor Russell Chipman

Russell Chipman 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).

  • Patent number: 10901128
    Abstract: Compound dichroic polarizers (CDPs) include multiple component dichroic polarizers based on different dichroic dyes and oriented to have different eigenpolarization directions. The component dichroic polarizers can be fixed to each other or to a substrate such as an eyeglass lens. Selection of eigenpolarization orientation and spectrum in a CDP permits color encoding of different SOPs.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: January 26, 2021
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Stanley Pau, Russell Chipman, Wei-Liang Hsu
  • Publication number: 20180188429
    Abstract: Compound dichroic polarizers (CDPs) include multiple component dichroic polarizers based on different dichroic dyes and oriented to have different eigenpolarization directions. The component dichroic polarizers can be fixed to each other or to a substrate such as an eyeglass lens. Selection of eigenpolarization orientation and spectrum in a CDP permits color encoding of different SOPs.
    Type: Application
    Filed: June 24, 2016
    Publication date: July 5, 2018
    Applicant: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Stanley Pau, Russell Chipman, Wei-Liang Hsu
  • Patent number: 8823848
    Abstract: A polarization camera includes a microlement polarizer that is situated in proximity to a focal plane array. The microlement polarizer is selectively scanned with respect to an optical image direct to the focal plane array, and an image processor stores a set of images associated with the scanning. Based on the stored images, a polarization image can be produced and displayed. A periodic microelement polarizer modulates the individual images of the set, and these images can be processed by filtering in the spatial frequency domain to isolate contributions associated with one or a combination of Stokes parameters. After filtering, Stokes parameter based images can be obtained by demodulating and inverse Fourier transforming the filtered frequency domain data.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: September 2, 2014
    Assignee: The Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Russell A. Chipman, Stanley Pau, J. Scott Tyo, Bradley M. Ratliff
  • Publication number: 20140180655
    Abstract: Polarization ray tracing for incoherent light uses a polarization ray trace tensor that can be expressed in local or global coordinates. Ray tracing through a plurality of optical elements or interactions can be performed by cascading polarization ray tracing tensors to obtain a combined polarization ray tracing tensor for the ray path. One or more polarization ray tracing tensors is applied to an input coherence matrix to obtain an output coherence matrix. Polarization ray tracing tensors can be defined based on optical surfaces, Mueller matrices, polarization ray tracing matrices, scattering functions, or other characteristics of optical interfaces and systems.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 26, 2014
    Inventors: Russell A. Chipman, Garam Yu
  • Patent number: 8502987
    Abstract: Disclosed herein is a method of determining the near angle scattering of a sample reflective surface comprising the steps of: a) splitting a beam of light having a coherence length of greater than or equal to about 2 meters into a sample beam and a reference beam; b) frequency shifting both the sample beam and the reference beam to produce a fixed beat frequency between the sample beam and the reference beam; c) directing the sample beam through a focusing lens and onto the sample reflective surface, d) reflecting the sample beam from the sample reflective surface through a detection restriction disposed on a movable stage; e) recombining the sample beam with the reference beam to form a recombined beam, followed by f) directing the recombined beam to a detector and performing heterodyne analysis on the recombined beam to measure the near-angle scattering of the sample reflective surface, wherein the position of the detection restriction relative to the sample beam is varied to occlude at least a portion of t
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: August 6, 2013
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Russell A. Chipman, Brian J. Daugherty, Stephen C. McClain, Steven A. Macenka
  • Patent number: 8421711
    Abstract: A cube corner retro-reflector that includes three mutually perpendicular reflecting planes arranged in a pyramidal configuration, wherein at least one of the reflecting planes has a non-isotropic surface causing a polarization state of a ray exiting the cube corner retro-reflector to be orthogonal or substantively orthogonal to a polarization state of a ray entering the cube corner retro-reflector for all linear polarization orientations.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: April 16, 2013
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Russell A. Chipman, Karlton Crabtree
  • Publication number: 20120075513
    Abstract: A polarization camera includes a microlement polarizer that is situated in proximity to a focal plane array. The microlement polarizer is selectively scanned with respect to an optical image direct to the focal plane array, and an image processor stores a set of images associated with the scanning. Based on the stored images, a polarization image can be produced and displayed. A periodic microelement polarizer modulates the individual images of the set, and these images can be processed by filtering in the spatial frequency domain to isolate contributions associated with one or a combination of Stokes parameters. After filtering, Stokes parameter based images can be obtained by demodulating and inverse Fourier transforming the filtered frequency domain data.
    Type: Application
    Filed: June 11, 2010
    Publication date: March 29, 2012
    Inventors: Russell A. Chipman, Stanley Pau, J. Scott Tyo, Bradley M. Ratliff
  • Patent number: 7612880
    Abstract: A method, apparatus, and computer program product for identifying features in a sample by analyzing Mueller matrices to calculate an average degree of polarization, a weighted average degree of polarization, a degree of polarization map, a degree of polarization surface. Also, a method, apparatus, and computer program product for identifying features in a sample by analyzing Mueller matrices to calculate depolarization relative to a retardance axis and/or a diattentuation axis, and to calculate a ratio of diattenuation to polarizance or ratios of row and column magnitudes. Also, a method for retinal polarimetry, including a non-depolarizing light tube configured for insertion into the eye.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: November 3, 2009
    Assignee: Arizona Board of Regents on Behalf of the University of Arizona
    Inventor: Russell Chipman
  • Publication number: 20090219618
    Abstract: A cube corner retro-reflector that includes three mutually perpendicular reflecting planes arranged in a pyramidal configuration, wherein at least one of the reflecting planes has a non-isotropic surface causing a polarization state of a ray exiting the cube corner retro-reflector to be orthogonal or substantively orthogonal to a polarization state of a ray entering the cube corner retro-reflector for all linear polarization orientations.
    Type: Application
    Filed: November 1, 2006
    Publication date: September 3, 2009
    Applicant: The Arizona BD of Reg on Behalf of the Univ of AZ
    Inventors: Russell A. Chipman, Karlton Crabtree
  • Patent number: 7567391
    Abstract: A radiation source has a radiation-emitter assembly disposed, at least in part, in a first compartment of a housing. A lens system is disposed in a second compartment of the housing so that the lens system is optically coupled to the radiation-emitter assembly. A mirror is disposed in a third compartment of the housing so that the mirror is optically coupled to the lens system. A filter and a conduit are disposed in a fourth compartment of the housing so that the filter and an aperture provided by the conduit are optically coupled to the mirror. Radiation exits the radiation source through the aperture.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: July 28, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Lester D. Strauch, III, Richard J. Kreis, Russell Chipman, Karlton Crabtree
  • Publication number: 20070146632
    Abstract: A method, apparatus, and computer program product for identifying features in a sample by analyzing Mueller matrices to calculate an average degree of polarization, a weighted average degree of polarization, a degree of polarization map, a degree of polarization surface. Also, a method, apparatus, and computer program product for identifying features in a sample by analyzing Mueller matrices to calculate depolarization relative to a retardance axis and/or a diattentuation axis, and to calculate a ratio of diattenuation to polarizance or ratios of row and column magnitudes. Also, a method for retinal polarimetry, including a non-depolarizing light tube configured for insertion into the eye.
    Type: Application
    Filed: August 3, 2004
    Publication date: June 28, 2007
    Applicant: ARIZONA BOARD OF REG, ON BEHALF OF THE UNIV. OF AZ
    Inventor: Russell Chipman
  • Patent number: 7203428
    Abstract: The invention relates to the monitoring of polarization mode dispersion (PMD) using heterodyne detection for providing PMD compensation in optical networks, and an apparatus for monitoring PMD. In the present invention, a broadband PMD monitor is disclosed based on heterodyne detection with a tunable laser source which can be fed to a compensator such as an add/drop or other wavelength switch and polarization dependent attenuation means. A signal from a local oscillator is combined with an optical signal and the beat frequency amplitude and phase is analyzed for two orthogonal polarization states simultaneously to obtain a state of polarization. By averaging a plurality of polarization states within a channel, PMD can be estimated for compensation.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 10, 2007
    Assignee: JDS Uniphase Corporation
    Inventors: Robert G. Waarts, Russell Chipman
  • Patent number: 6947618
    Abstract: Polarization controlling elements equivalent to quarter and half waveplates are constructed from sequences of variable retarder plates having fixed retardation axes. An endless polarization control algorithm is provided.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: September 20, 2005
    Assignee: JDS Uniphase Corporation
    Inventors: Massimo Martinelli, Russell Chipman
  • Publication number: 20040228567
    Abstract: Polarization controlling elements equivalent to quarter and half waveplates are constructed from sequences of variable retarder plates having fixed retardation axes. An endless polarization control algorithm is provided.
    Type: Application
    Filed: November 5, 2003
    Publication date: November 18, 2004
    Applicant: JDS Uniphase Corporation
    Inventors: Massimo Martinelli, Russell Chipman
  • Publication number: 20040008991
    Abstract: The invention relates to the monitoring of polarization mode dispersion (PMD) using heterodyne detection for providing PMD compensation in optical networks, and an apparatus for monitoring PMD. In the present invention, a broadband PMD monitor is disclosed based on heterodyne detection with a tunable laser source which can be fed to a compensator such as an add/drop or other wavelength switch and polarization dependent attenuation means. A signal from a local oscillator is combined with an optical signal and the beat frequency amplitude and phase is analyzed for two orthogonal polarization states simultaneously to obtain a state of polarization. By averaging a plurality of polarization states within a channel, PMD can be estimated for compensation.
    Type: Application
    Filed: June 10, 2003
    Publication date: January 15, 2004
    Applicant: JDS UNIPHASE CORPORATION
    Inventors: Robert G. Waarts, Russell Chipman
  • Patent number: 6244712
    Abstract: An improved optical scanning spectroscopic method and apparatus is provided that alternately scans the posterior portion of an eye with laser signals emitted by different ones of a plurality of lasers such that a data frame can be constructed that includes interlaced portions formed from signals returning from the posterior portion of the eye in response to illumination by laser signals emitted by different ones of the plurality of lasers. As such, the same data frame includes data attributable to the reflection of laser signals from each of the plurality of lasers even though the subject's eye is not subjected to simultaneous illumination by each of the lasers, thereby protecting the subject's eye.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: June 12, 2001
    Assignee: University of Alabama in Huntsville
    Inventors: Matthew H. Smith, Lloyd W. Hillman, Kurt R. Denninghoff, Russell A. Chipman
  • Patent number: 6183084
    Abstract: The present invention relates to ophthalmic lenses. In particular, the invention provides ophthalmic lenses with reduced astigmatism. The lenses are composed of a surface and a compensating surface, the surface geometries of which are defined by segments of a size suitable to be defined by a tenth order x,y polynomial with Zernike coefficients.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: February 6, 2001
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Russell A. Chipman, Patrick John Reardon
  • Patent number: 6086203
    Abstract: The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved by combining a progressive addition surface with a first dioptric add power with at least one optical element that provides additional dioptric add power to the lens.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: July 11, 2000
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ronald D. Blum, Russell A. Chipman, Amitava Gupta, Edgar Vithal Menezes
  • Patent number: 6072570
    Abstract: An instrument and method for optical testing of an eyeglass lens, including progressive addition lenses, to obtain image quality measurements includes an illumination system for presenting a beam of light to a test lens, a test lens positioning system for rotating the test lens so that different areas on the lens are illuminated, a zoom lens for focusing the beam at a constant effective focal length, a detection system for recording and measuring image quality of the test lens, and an alignment boom for conveying the zoom lens and the detection system such that the optical axis remains aligned with the beam existing the test lens. The instrument is fully automated and capable of obtaining measurements of the power, astigmatism, prism and modulation transfer function at various locations on the surface of the lens.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: June 6, 2000
    Assignee: Innotech
    Inventors: Russell A. Chipman, Jonathan J. Drewes, James B. Hadaway
  • Patent number: 6000798
    Abstract: A novel ophthalmic lens is provided. The lens includes an astigmatism subtracting surface that removes unwanted astigmatism caused by other elements of the lens.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: December 14, 1999
    Assignee: Innotech Inc.
    Inventors: Russell A. Chipman, Patrick Reardon, Amitava Gupta