Patents by Inventor Russell A. Chipman

Russell A. 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: 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
  • 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: 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
  • Patent number: 5935076
    Abstract: The method and apparatus for measuring the transmittance of blood within a retinal vessel detects the intensity of light reflected from illuminated portions of an eye, including the retinal vessel and background fundus, and adjusts the corresponding intensity signals to compensate for reflections from the retinal vessel. In particular, the transmittance measuring method and apparatus constructs an intensity profile function based upon the intensity signals. As a result, the intensity profile function approximates the intensity of light transmitted through the retinal vessel as a function of retinal vessel position. During the construction of the intensity profile function, the transmittance measuring method and apparatus can compensate for at least some of the reflections of light from the retinal vessel which occurred prior to propagation of the light through the retinal vessel, thereby increasing the accuracy with which the transmittance of blood within a retinal vessel is measured.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: August 10, 1999
    Assignee: University of Alabama in Huntsville
    Inventors: Matthew H. Smith, Russell A. Chipman, Thomas E. Minnich, Lloyd W. Hillman, Kurt R. Denninghoff
  • Patent number: 5776060
    Abstract: The method and apparatus for measuring the oxygen saturation of blood within a retinal vessel illuminates the retinal vessel with light having a combination of wavelengths selected to reduce the error in the measured blood oxygen saturation. The oxygen saturation measuring method and apparatus illuminates a retinal vessel with light having the selected combination of wavelengths. For example, the oxygen saturation measuring method and apparatus can illuminate the retinal vessel with light having a first wavelength between 460 nm and 503 nm, a second wavelength between 600 nm, and 770 nm and a third wavelength between 770 nm and 1000 nm. The oxygen saturation measuring method and apparatus then measures the transmittance of the blood within the retinal vessel in response to the illumination at each of the selected wavelengths.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: July 7, 1998
    Assignee: University of Alabama in Huntsville
    Inventors: Matthew H. Smith, Russell A. Chipman, Thomas E. Minnich
  • Patent number: 5045701
    Abstract: An infrared spectropolarimeter system for making spectroscopic measurements of electro-optic properties of materials over a large wavelength range in the infrared is described which comprises in combination a spectrometer having a sample region for receiving a sample for making spectroscopic measurements thereon and a source of light for providing a sample beam of selected wavelength for projection through the sample region, the sample region defined between a first focusing element for selectively focusing the sample beam within the sample region and a second focusing element for collimating the sample beam and providing an output beam for analysis, first and second polarizers between the focusing elements with the sample region therebetween for selectively polarizing the sample beam, first and second rotatable optical retarders between the polarizers with the sample region therebetween for selectively retarding one linear polarization component with respect to the orthogonal component of the sample beam, an
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: September 3, 1991
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Dennis H. Goldstein, Russell A. Chipman
  • Patent number: 4660151
    Abstract: A multicomponent quantitative analytical method and apparatus wherein the method includes the steps of and the apparatus is capable of performing steps of obtaining a plurality of calibration spectra, transforming the calibration spectra using a transform with orthogonal basis vectors, obtaining a calibration matrix relating the transform spectra to concentrations of analytes in the calibration samples, obtaining a spectrum for an unknown sample, transforming the unknown sample spectrum, and relating the transformed unknown sample spectrum to the calibration matrix to thereby determine the concentration of analytes in the unknown sample.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: April 21, 1987
    Assignee: Beckman Instruments, Inc.
    Inventors: Russell A. Chipman, Robert J. Obremski, Christopher W. Brown