Patents by Inventor Gregg M. Podojil
Gregg M. Podojil 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).
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Publication number: 20180074257Abstract: A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly.Type: ApplicationFiled: August 23, 2017Publication date: March 15, 2018Inventors: Timothy A. McCollum, Jeffery R. Parker, Gregg M. Podojil
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Patent number: 9772440Abstract: A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly.Type: GrantFiled: December 29, 2016Date of Patent: September 26, 2017Assignee: Rambus Delaware LLCInventors: Timothy A. McCollum, Jeffery R. Parker, Gregg M Podojil
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Publication number: 20170176670Abstract: A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly.Type: ApplicationFiled: December 29, 2016Publication date: June 22, 2017Inventors: Timothy A. McCollum, Jeffery R. Parker, Gregg M. Podojil
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Patent number: 9563007Abstract: A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly.Type: GrantFiled: September 28, 2012Date of Patent: February 7, 2017Assignee: Rambus Delaware LLCInventors: Timothy A McCollum, Jeffery R Parker, Gregg M Podojil
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Patent number: 9551465Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: GrantFiled: October 7, 2015Date of Patent: January 24, 2017Assignee: Rambus Delaware LLCInventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland, Jeffery R. Parker
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Publication number: 20160230944Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: ApplicationFiled: October 7, 2015Publication date: August 11, 2016Inventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland, Jeffery R. Parker
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Patent number: 9169981Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: GrantFiled: April 10, 2015Date of Patent: October 27, 2015Assignee: Rambus Delaware LLCInventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland, Jeffery R. Parker
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Patent number: 9170364Abstract: A lighting assembly includes a light source to emit on-axis light rays at smaller angles relative to an optical axis of the light source, and off-axis light rays at larger angles relative to the optical axis and spectrally different from the on-axis light rays. The lighting assembly additionally includes a light guide having a light input edge adjacent the light source and opposed major surfaces between which light from the light source propagates by total internal reflection. The light input edge has an edge feature aligned with the light source to receive light therefrom. The edge feature specularly redirects the on-axis light rays and the off-axis light rays differently to increase overlap between the on-axis light rays and the off-axis light rays within the light guide. The increased overlap reduces spatial color variation of light extracted from the light guide between locations at different angles from the optical axis.Type: GrantFiled: December 4, 2013Date of Patent: October 27, 2015Assignee: Rambus Delaware LLCInventors: Robert M Ezell, Martin E Ligas, Timothy A McCollum, Gregg M Podojil
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Publication number: 20150285443Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: ApplicationFiled: April 10, 2015Publication date: October 8, 2015Inventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland, Jeffery R. Parker
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Patent number: 9028129Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: GrantFiled: September 30, 2013Date of Patent: May 12, 2015Assignee: Rambus Delaware LLCInventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland
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Publication number: 20140286052Abstract: A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly.Type: ApplicationFiled: September 28, 2012Publication date: September 25, 2014Inventors: Timothy A McCollum, Jeffery R Parker, Gregg M Podojil
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Publication number: 20140153282Abstract: A lighting assembly includes a light source to emit on-axis light rays at smaller angles relative to an optical axis of the light source, and off-axis light rays at larger angles relative to the optical axis and spectrally different from the on-axis light rays. The lighting assembly additionally includes a light guide having a light input edge adjacent the light source and opposed major surfaces between which light from the light source propagates by total internal reflection. The light input edge has an edge feature aligned with the light source to receive light therefrom. The edge feature specularly redirects the on-axis light rays and the off-axis light rays differently to increase overlap between the on-axis light rays and the off-axis light rays within the light guide. The increased overlap reduces spatial color variation of light extracted from the light guide between locations at different angles from the optical axis.Type: ApplicationFiled: December 4, 2013Publication date: June 5, 2014Applicant: Rambus Delaware LLCInventors: Robert M Ezell, Martin E Ligas, Timothy A McCollum, Gregg M Podojil
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Publication number: 20140092580Abstract: An LED lamp or LED lighting assembly includes a light guide having opposed major surfaces configured to propagate light by total internal reflection and a light input edge extending between the major surfaces. A light source is adjacent to the light input edge and is configured to edge light the light guide. In some embodiments, the light source is moveable relative to the light input edge, and the spectrum of the light output from the light guide may be adjusted by movement of the light source relative to the light input edge.Type: ApplicationFiled: September 30, 2013Publication date: April 3, 2014Applicant: Rambus Delaware LLCInventors: Timothy A. McCollum, Laszlo A. Takacs, Gregg M. Podojil, Matthew R. Wancata, Fumitomo Hide, Christopher R. Ruhland
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Publication number: 20140092590Abstract: A flashlight includes first and second solid-state light sources, a collimating optical element, and a light guide. Light output by the first light source interacts with the collimating optical element to output a light from the flashlight along an optical axis of the collimating optical element. The light guide includes an outer major surface, a first end, a second end, a longitudinal axis extending between the first end and the second end, and a light input edge at the first end. Light from the second light source is input to the light guide at the light input edge and propagates in the light guide by total internal reflection. The light guide additionally includes light extracting elements to extract light from the light guide with a radial component relative to the longitudinal axis and the optical axis.Type: ApplicationFiled: September 20, 2013Publication date: April 3, 2014Applicant: Rambus Delaware LLCInventors: Jeffery R. Parker, Kieran F. Drain, Fumitomo Hide, Gregg M Podojil
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Publication number: 20130322076Abstract: 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: ApplicationFiled: May 30, 2013Publication date: December 5, 2013Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomo Hide, Gregg M. Podojil, Ian Hardcastle
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Publication number: 20130194809Abstract: A lighting assembly that includes a cornuate light guide and an annular light extracting and redirecting member. The light guide has a radial light input surface, an axial light input region, radial light output region and a flared region between input region and output region. Light input at the light input surface propagates to and within the light output region by total internal reflection at major surfaces of the light guide. The light extracting and redirecting member has a light extracting element in optical contact with an annular region of one of the major surfaces of the light output region, and a reflective light redirecting element to axially redirect the extracted light with a defined light ray angle distribution.Type: ApplicationFiled: October 21, 2011Publication date: August 1, 2013Applicant: RAMBUS DELAWARE LLCInventors: Brian E. Richardson, Timothy A. McCollum, Fumitomo Hide, Gregg M. Podojil