Patents by Inventor David G. Freier

David G. Freier 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: 20190214436
    Abstract: Organic light emitting diode (OLED) displays having an emissive OLED layer and a nanostructured interface configured to reduce variability of color with view angle are described. An optical stack having first and second layers with differing refractive indices includes the nanostructured interface between the first and second layers. The second layer is disposed between the first layer and the emissive OLED layer. The nanostructured interface has a substantially azimuthally symmetric power spectral density (PSD) and a wavenumber-PSD product has a maximum for a wavenumber larger than 6 radians/micrometer times the refractive index of the second layer. For all wavenumbers lower than 6 radians/micrometer times the second refractive index, the wavenumber-PSD product is no more than 0.3 times the maximum.
    Type: Application
    Filed: May 18, 2017
    Publication date: July 11, 2019
    Inventors: David G. Freier, Robert L. Brott, Justin P. Meyer
  • Patent number: 9976714
    Abstract: The present disclosure describes light delivery and distribution components of a light duct that can be used as a luminaire, such as a bollard-style luminaire that can be useful for the illumination of pedestrian crosswalks, the light engine useful in the luminaire, and methods for making the light engine and the luminaire. The present disclosure further describes methods for crosswalk illumination using the bollard-style luminaires, and methods of communication between bollard luminaires. The bollard luminaire includes a design that generally confines light to illuminate the crosswalk and the pedestrian in the crosswalk, such that light that could produce glare for the pedestrian and/or a driver approaching the crosswalk is minimized.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: May 22, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl J. L. Geisler, Glendon D. Kappel, David G. Freier, Mark G. Mathews, Nicholas G. Amell, Scott E. Simons
  • Patent number: 9791128
    Abstract: The present disclosure describes light delivery and distribution components of a ducted lighting system having a cross-section that includes at least one curved portion and a light source. The delivery and distribution system (that is, light duct and light duct extractor) can function effectively with any light source that is capable of delivering light which is substantially collimated about the longitudinal axis of the light duct, and which is also preferably substantially uniform over the inlet of the light duct.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 17, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: David G. Freier, Vadim N. Savvateev, Thomas R. J. Corrigan
  • Publication number: 20170211794
    Abstract: A lighting system comprising a light engine, a duct connected to the light engine defining a light transport passage for transporting light emitted from the light engine along a propagation direction through the duct, one or more light output surfaces on the duct through which light is emitted, the light engine comprising arranged sequentially in a single file: a light collimator having an output end arranged to face the light transport passage, a LED light source arranged to direct light into an input end of the light collimator, and a heat sink thermally coupled to the LED light source.
    Type: Application
    Filed: August 21, 2015
    Publication date: July 27, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Sheldon B. Ruiz, Andrew T. Tio, Chong Yang Ong, Kar Yam Tay, Karl J. L. Geisler, David G. Freier
  • Publication number: 20170175978
    Abstract: A light engine having an array of light horns. Each light horn has a narrow end, an open wide end, and side walls extending from the narrow end to the wide end with the side walls shaped as truncated pyramids. One or more LEDs are located at the narrow end of each of the light horns with each of the light horns providing substantially collimated light from the LEDs at the wide end.
    Type: Application
    Filed: March 20, 2015
    Publication date: June 22, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl J. L. Geisler, Vadim N. Savvateev, Michael A. Meis, David G. Freier
  • Patent number: 9683718
    Abstract: A light duct elbow having two light conduits capable of transporting light along two different propagation directions. A light diverter is located between the light conduits and has a reflector for directing light along the light conduits. In the light duct elbow, a light ray propagating within a collimation angle in the first light conduit that intersects the reflector is diverted to a second light ray propagating within the collimation angle in the second light conduit.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: June 20, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl J. L. Geisler, David G. Freier, Thomas R. Corrigan
  • Publication number: 20170030538
    Abstract: The present disclosure describes light delivery and distribution components of a light duct that can be used as a luminaire, such as a bollard-style luminaire that can be useful for the illumination of pedestrian crosswalks, the light engine useful in the luminaire, and methods for making the light engine and the luminaire. The present disclosure further describes methods for crosswalk illumination using the bollard-style luminaires, and methods of communication between bollard luminaires. The bollard luminaire includes a design that generally confines light to illuminate the crosswalk and the pedestrian in the crosswalk, such that light that could produce glare for the pedestrian and/or a driver approaching the crosswalk is minimized.
    Type: Application
    Filed: April 7, 2015
    Publication date: February 2, 2017
    Inventors: Karl J.L. Geisler, Glendon D. Kappel, David G. Freier, Mark G. Mathews, Nicholas G. Amell, Scott E. Simons
  • Patent number: 9551827
    Abstract: The disclosure generally relates to efficient hollow light duct bends (200) that are capable of retaining a higher on-axis transmission for partially collimated light propagating within a light duct (220, 230). In particular, the described hollow light duct bends (200) include input and output plates (214, 216) that have low reflectivity for near nonnal incident light, and high reflectivity for near grazing incident light.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: January 24, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Steven H. Kong, David G. Freier
  • Patent number: 9476554
    Abstract: The present disclosure describes light delivery and distribution components of a ducted lighting system having a cross-section that includes planar duct portions, and a light source. The delivery and distribution system (that is, light duct and light duct extractor) can function effectively with any light source that is capable of delivering light which is substantially collimated about the longitudinal axis of the light duct, and which is also preferably substantially uniform over the inlet of the light duct.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 25, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: David G. Freier, Vadim N. Savvateev, Thomas R. J. Corrigan
  • Patent number: 9464773
    Abstract: The present disclosure provides a novel construction for an illuminated light splitter in a mirror-lined light duct. In particular, the present disclosure addresses the ability to split partially collimated light travelling through a light duct into two different light ducts using light diverters, while extracting a portion of the light from each of the light ducts and also from the common intersection region. In some cases, the visual appearance of the illumination in the intersection region can appear non-uniform due to the presence of the light diverters, and the present disclosure provides an illuminated light duct splitter (100, 200, 300) configuration that homogenizes the output from the illuminated duct within the intersection region (117, 217, 317).
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: October 11, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl J. L. Geisler, David G. Freier
  • Publication number: 20160265744
    Abstract: A light duct elbow having two light conduits capable of transporting light along two different propagation directions. A light diverter is located between the light conduits and has a reflector for directing light along the light conduits. In the light duct elbow, a light ray propagating within a collimation angle in the first light conduit that intersects the reflector is diverted to a second light ray propagating within the collimation angle in the second light conduit.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 15, 2016
    Inventors: Karl J.L. Geisler, David G. Freier, Thomas R. Corrigan
  • Publication number: 20160245486
    Abstract: The present disclosure describes advanced lighting elements, in particular solid-state lighting elements, and luminaires that include an array of lighting elements. The lighting elements, and luminaires including the lighting elements can exhibit benefits that include high optical efficiency and therefore high luminous efficacy; extraordinary directional control and therefore extraordinary glare control and efficacy of delivered lumens; and exceptional mixing of individual-device emission providing exceptional suppression of punch-through and color breakup. In many cases, the architecture can be amenable to low-cost manufacturing in a modular format.
    Type: Application
    Filed: October 15, 2014
    Publication date: August 25, 2016
    Inventors: David G. Freier, Michael A. Meis, Thomas R. Hoffend, Jr., Anthony J. Piekarczyk, Scott E. Simons, Matthew M. Philippi, Kenneth A. P. Meyer
  • Publication number: 20160223742
    Abstract: The present disclosure describes light delivery and distribution components of a ducted lighting system having a cross-section that includes at least one curved portion and a remote light source. The delivery and distribution system (i.e., light duct, redistribution plate, and light duct extractor) can function effectively with any light source that is capable of delivering light which is substantially collimated about the longitudinal axis of the light duct, and which is also preferably substantially uniform over the inlet of the light duct.
    Type: Application
    Filed: October 1, 2014
    Publication date: August 4, 2016
    Inventors: Anthony J. Piekarczyk, Vadim N. Savvateev, Michael A. Meis, David G. Freier, Thomas R. Hoffend, Jr., Rolf W. Biernath
  • Patent number: 9360676
    Abstract: The disclosure generally relates to highly efficient light duct light splitters that are capable of splitting the light propagating within a light duct into two different ducts, with nearly 100 percent efficiency. In particular, the described light splitters are configured in a “Tee” shape with a reflective splitter element.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: June 7, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas R. J. Corrigan, David G. Freier
  • Patent number: 9353930
    Abstract: The disclosure generally relates to highly efficient light duct light extractors that are capable of extracting a portion of the light propagating within a light duct with nearly 100 percent efficiency. In particular, the described light extractors are configured in a “Tee” shape with a reflective diverter element.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: May 31, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: David G. Freier, Thomas R. J. Corrigan
  • Patent number: 9335015
    Abstract: The disclosure generally relates to concentrating daylight collectors and in particular to concentrating daylight collectors useful for interior lighting of a building. The concentrating daylight collectors generally include a cassegrain-type concentrator section that provides for a full-tracking solar collector with one moving part and with a high efficiency of coupling of collected solar irradiation to a stationary duct. In some cases, the disclosed concentrating daylight collectors can be used more conventionally, such as for directing sunlight onto a photovoltaic cell for generation of electrical power, or an absorbing surface for extraction of thermal energy.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: May 10, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: David G. Freier, Timothy L. Quinn, Thomas R. Corrigan, Byron E. Trotter
  • Publication number: 20160123547
    Abstract: The present disclosure describes light delivery and distribution components of a light duct that can be used as a luminaire, such as a bollard-style luminaire that can be useful for the illumination of pedestrian crosswalks. The bollard luminaire includes a design that generally confines light to illuminate the cross-walk and the pedestrian in the crosswalk, such that light that could produce glare for the pedestrian and/or a driver approaching the crosswalk is minimized The delivery and distribution system (i.e., light duct and light duct extractor) can function effectively with any light source that is capable of delivering light which is substantially collimated about the longitudinal axis of the light duct, and which is also preferably substantially uniform over the inlet of the light duct.
    Type: Application
    Filed: May 27, 2014
    Publication date: May 5, 2016
    Inventors: Karl J.L. Geisler, David G. Freier
  • Publication number: 20160084458
    Abstract: The present disclosure provides a novel construction for an illuminated light splitter in a mirror-lined light duct. In particular, the present disclosure addresses the ability to split partially collimated light travelling through a light duct into two different light ducts using light diverters, while extracting a portion of the light from each of the light ducts and also from the common intersection region. In some cases, the visual appearance of the illumination in the intersection region can appear non-uniform due to the presence of the light diverters, and the present disclosure provides an illuminated light duct splitter (100, 200, 300) configuration that homogenizes the output from the illuminated duct within the intersection region (117, 217, 317).
    Type: Application
    Filed: April 4, 2014
    Publication date: March 24, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl J. L. Geisler, David G. Freier
  • Publication number: 20160018592
    Abstract: The present disclosure describes light delivery and distribution components of a ducted lighting system having a cross-section that includes at least one curved portion and a remote light source. The delivery and distribution system (i.e., light duct and light duct extractor) can function effectively with any light source (480) that is capable of delivering light which is substantially collimated about the longitudinal axis (405) of the light duct (410), and which is also preferably substantially uniform over the inlet of the light duct. A turning film (450) comprising parallel ridged microstructures intercepts and redirects light rays exiting the light output region. The light duct (410) is hollow and comprises a light transmissive region (430) which may vary in size along the longitudinal axis (405).
    Type: Application
    Filed: April 1, 2014
    Publication date: January 21, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Vadim N. Savvateev, Michael A. Meis, David G. Freier, Anthony J. Piekarczyk, Audrey A. Sherman
  • Patent number: D752773
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: March 29, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: David G. Freier, Thomas R. J. Corrigan, Karl J. L. Geisler, Glendon D. Kappel