Patents by Inventor Jeffery R. Parker

Jeffery R. Parker 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: 20130329432
    Abstract: An optical assembly comprises a light emitting panel having a light output surface and a light redirecting film located to receive light emitted from the light output surface. The light output surface has a non-uniform directional light output distribution. The light redirecting film has a pattern of individual optical elements of well defined shape that vary at different locations on the light redirecting film to redistribute the light received from the light output surface within a desired light ray angle distribution.
    Type: Application
    Filed: May 14, 2013
    Publication date: December 12, 2013
    Applicant: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Robert M. Ezell
  • Publication number: 20130322115
    Abstract: A lighting assembly comprises a light source and a light guide having a light input edge and a light output surface. Light from the light source enters the light input edge and is propagated within the light guide by total internal reflection. A spectrum adjuster is adjustable or selected to achieve a desired spectrum of the light within the light guide.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Michael D. Mayer
  • Publication number: 20130322076
    Abstract: A light bulb includes light guides extending in a direction having a radial component with respect to a longitudinal axis, each light guide including a light input edge, opposed major surfaces, and light extracting elements at least one of the opposed major surfaces. In one embodiment, the light guides are disposed about an axial heat sink, and for each light guide, a respective light source is mounted to the axial heat sink to edge light the light guide such that light from the light source propagates in the light guide by total internal reflection. In another embodiment, a housing is at an end of the light guides, and for each light guide, a respective light source is mounted to the housing to edge light the light guide such that light from the light source propagates in the light guide by total internal reflection.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomo Hide, Gregg M. Podojil, Ian Hardcastle
  • Publication number: 20130322120
    Abstract: Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. A plurality of light sources are configured to illuminate one or more output areas of one or more of the substrates, films or sheets. The light emitting assembly is configured to emit light through the pattern of optical elements and produce a predetermined luminance profile of the light emitting assembly. At least some adjacent substrates, films or sheets may have portions that overlap, and at least one pattern of optical elements on or in at least one side of the substrates, films or sheets may be configured so that discontinuities between the adjacent substrates, films or sheets are minimized.
    Type: Application
    Filed: May 10, 2013
    Publication date: December 5, 2013
    Applicant: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomo Hide
  • Patent number: 8462292
    Abstract: Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. A plurality of light sources are configured to illuminate one or more output areas of one or more of the substrates, films or sheets. The light emitting assembly is configured to emit light through the pattern of optical elements and produce a predetermined luminance profile of the light emitting assembly. At least one of the light sources is dimmed or boosted in response to an input video signal while operating a liquid crystal display as a light valve to illuminate the liquid crystal display by the light emitting assembly.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: June 11, 2013
    Assignee: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomi Hide
  • Patent number: 8459858
    Abstract: An optical assembly comprises light sources and a light emitting panel member having an input edge to which each of the light sources is optically coupled at a different location along the input edge. Different sets of individual optical deformities on or in at least one of the sides of the panel member each have at least one surface that is shaped or oriented to extract light propagating in the same direction through the panel member in different directions for viewing from different angles through one of the sides of the panel member.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: June 11, 2013
    Assignee: Rambus Delaware LLC
    Inventors: Timothy A. McCollum, Jeffery R. Parker, Robert M. Ezell
  • Patent number: 8398274
    Abstract: Light redirecting film including a thin optically transparent substrate having a pattern of individual optical elements of well-defined shape on at least one surface that are quite small relative to the length and width of the surface. At least some of the optical elements have at least one flat surface and at least one curved surface, and intersecting each other over an intersection volume of the intersecting optical elements.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 19, 2013
    Assignee: Rambus International Ltd.
    Inventors: Jeffery R. Parker, Timothy A. McCollum
  • Publication number: 20130038195
    Abstract: A light bulb includes a light guide, light source, and housing. The light guide is configured as an open-ended hollow body surrounding an internal volume and defining a longitudinal axis. The light guide has inner and outer major surfaces. The light source is configured to edge light the light guide. The housing is at one end of the light guide. In one embodiment, fins extend from the housing adjacent the outer major surface, each fin separated from the outer major surface by an air gap to allow air flow between the fin and outer major surface. In another embodiment, a heat sink is disposed in the internal volume and configured as a hollow body with a branched cross section. Each branch extends outward from a common center and defines an air flow channel that terminates in an orifice aligned with a respective through-slot of the light guide.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 14, 2013
    Applicant: RAMBUS INC.
    Inventors: James T. Petroski, Witold Bauer, Jeffery R. Parker
  • Publication number: 20130033900
    Abstract: A lighting assembly includes an edge-lit light guide and a light redirecting member. Light extracting elements at the light guide extract light from the light guide as intermediate light. Light redirecting elements at the light redirecting film are configured to redirect the intermediate light received from the light guide to illuminate a target surface in accordance with a defined illumination profile.
    Type: Application
    Filed: July 26, 2012
    Publication date: February 7, 2013
    Applicant: RAMBUS INC.
    Inventors: Timothy A. McCollum, Robert M. Ezell, Jeffery R. Parker, Kurt R. Starkey, Ian Hardcastle, Fumitomo Hide
  • Publication number: 20120314449
    Abstract: A lighting assembly includes a transparent light guide having first and second major surfaces and a light input edge, and is configured to propagate light by total internal reflection. A light source located adjacent the light input edge is selectively operable to edge light the light guide. First light extracting elements at the first major surface are configured to extract light through the first major surface with a first light ray angle distribution. Second light extracting elements at the first major surface are configured to extract light through the second major surface with a second light ray angle distribution. The light extracted through the second major surface reduces visibility at viewing angles within a defined viewing angle range through the lighting assembly from the second major surface of the light guide greater than the reduction in visibility through the lighting assembly from the first major surface of the light guide.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Applicant: RAMBUS INC.
    Inventors: Timothy A. McCollum, Jeffery R. Parker
  • Patent number: 8322905
    Abstract: A light emitting assembly comprises a light source and a light emitting panel member having a panel surface and an input edge for receiving light from the light source. On or in the panel surface is a pattern of individual light extracting deformities. Each of the deformities has a well defined shape and a length and width substantially smaller than the length and width of the panel surface. At least some of the deformities have only two surfaces, each having opposite peripheral edge portions that intersect each other and intersect the panel surface. One of the surfaces of the deformities is substantially perpendicular to the panel surface and is curved in a transverse direction. The other surface of the deformities is a sloping surface.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: December 4, 2012
    Assignee: Rambus International Ltd.
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Robert M. Ezell
  • Patent number: 8317368
    Abstract: Light redirecting film including a thin optically transparent substrate having a pattern of individual optical elements of well-defined shape on at least one surface that are quite small relative to the length and width of the surface. At least some of the optical elements have at least one flat surface and at least one curved surface, and intersecting each other over an intersection volume of the intersecting optical elements.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: November 27, 2012
    Assignee: Rambus International Ltd.
    Inventors: Jeffery R. Parker, Timothy A. McCollum
  • Publication number: 20120287671
    Abstract: A lighting assembly includes a light engine and a light guide. The light engine edge lights the light guide and includes a control assembly that controls light output according to one or more parameters to produce light output from the lighting assembly with a desired characteristic. Lighting assemblies are combined to form a modular lighting assembly.
    Type: Application
    Filed: April 5, 2012
    Publication date: November 15, 2012
    Applicant: RAMBUS INC.
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Matthew R. Wancata, Fumitomo Hide, Alexey Titov, Ian Hardcastle
  • Patent number: 8308334
    Abstract: A light emitting assembly comprises a plurality of light sources and a solid light emitting panel member having a light input edge and a transition area between the light sources and the light input edge. Light from the light sources enters the transition area and mixes within the transition area prior to entering the panel member. Refractive surfaces on the transition area redirect the light into the panel member. A film is maintained in spaced relation from the panel member by spacers at a perimeter of the film to form a hollow layer between the panel member and the film. Deformities on or in the panel member cause light to be extracted from the panel member and pass through the hollow layer and out through the film.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: November 13, 2012
    Assignee: Rambus International Ltd.
    Inventor: Jeffery R. Parker
  • Publication number: 20120281432
    Abstract: A lighting assembly includes a light guide having opposed major surfaces between which light propagates by total internal reflection and a light input edge. The light assembly also includes a light engine. The light engine has a heat conductive armature having a receptacle for a portion of the light guide that includes the light input edge and a light source retained by and thermally coupled to the armature. The armature functions as a heat sink for dissipating heat generated by the light source. The light guide is mechanically retained in the receptacle, and the light guide and the armature cooperate to align the light input edge with the light source for inputting light from the light source into the light guide through the light input edge.
    Type: Application
    Filed: April 5, 2012
    Publication date: November 8, 2012
    Applicant: RAMBUS INC.
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Martin E. Ligas, Joseph Crookston, Fumitomo Hide, Alexey Titov, Ian Hardcastle
  • Publication number: 20120268966
    Abstract: A lighting assembly includes a light guide having a first major surface, a second major surface opposite the first major surface, a light input edge, and an end edge distal the light input edge. Light input to the light guide through the light input edge propagates by total internal reflection toward the end edge. The lighting assembly further includes light extracting elements at least one of the major surfaces of the light guide, the light extracting elements configured to extract light through the first major surface in a direction away from the light input edge and away from the first major surface, and a banding reduction element at the end edge configured to redirect light incident thereon in a direction away from the light input edge.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 25, 2012
    Applicant: RAMBUS INC.
    Inventors: Timothy A. McCollum, Jeffery R. Parker, Fumltomo Hide, Alexey Titov, Ian Hardcastle, Robert M. Ezell
  • Patent number: D670412
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 6, 2012
    Assignee: Rambus Inc.
    Inventors: Jeffery R. Parker, Lukasz S. Poslowski, James T. Petroski
  • Patent number: D670413
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 6, 2012
    Assignee: Rambus Inc.
    Inventors: Jeffery R. Parker, Lukasz S. Poslowski, James T. Petroski
  • Patent number: D675349
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 29, 2013
    Assignee: Rambus International Ltd.
    Inventors: Jeffery R. Parker, Timothy M. Parker
  • Patent number: D700719
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 4, 2014
    Assignee: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, James T. Petroski, Witold Bauer