Patents by Inventor Michael W. O'Keefe

Michael W. O'Keefe 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).

  • OPTICAL PROJECTION SUBSYSTEM
    Publication number: 20140211173
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander A. Glinski, Stephen J. Willett
  • Optical projection subsystem
    Patent number: 8459800
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: June 11, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander A. Glinski, Stephen J. Willett
  • OPTICAL PROJECTION SUBSYSTEM
    Publication number: 20120287406
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Application
    Filed: November 2, 2011
    Publication date: November 15, 2012
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander Glinski, Stephen J. Willett
  • Optical projection subsystem
    Patent number: 8070295
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: December 6, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander Glinski, Stephen J. Willett
  • OPTICAL PROJECTION SUBSYSTEM
    Publication number: 20110122371
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Application
    Filed: January 13, 2011
    Publication date: May 26, 2011
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander Glinski, Stephen J. Willett
  • Optical projection subsystem
    Patent number: 7901083
    Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: March 8, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander Glinski, Stephen J. Willett
  • Polarizing beam splitter
    Patent number: 7529029
    Abstract: A polarizing beam splitter that includes at least one prism, and a reflective polarizing film. The prism comprises a first polymeric material, and has at least one curved outer surface and an incident surface, where the reflective polarizing film is disposed adjacent the incident surface.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: May 5, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: John E. Duncan, Michael W. O'Keefe, William E. Phillips, III, Jiaying Ma, Patrick R. Destain
  • Optical articles from curable compositions
    Patent number: 7463417
    Abstract: A curable composition is provided which includes an oligomer having a plurality of pendent and/or terminal ethylenically unsaturated, free-radically polymerizable functional groups, a free-radically polymerizable crosslinking agent, and/or a diluent monomer, and a photoinitiator. The composition, when cured, is non-yellowing, exhibits low shrinkage and low birefringence making it suitable for many optical applications such as optical lenses, optical fibers, prisms, light guides, optical adhesives, and optical films.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: December 9, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: John E. Duncan, Michael W. O'Keefe, Roy A. Auerbach, Peter M. Olofson, Christopher R. Boyer, Ying-Yuh Lu, Jianhui Xia
  • PROJECTION SCREEN APPARATUS FOR USE WITH PORTABLE DIGITAL PROJECTORS
    Publication number: 20080158669
    Abstract: Projection screen apparatuses that comprise at least a first and a second projection screen member having different optical properties are described. These screen members can be adapted to connect to each other to form a self-supporting structure in which the first projection screen member is oriented in a viewing position and the second projection screen member is oriented in a support position.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Inventors: Michael W. O'Keefe, John E. Duncan
  • Polarizing beam splitter
    Patent number: 7362507
    Abstract: A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface and an additional outer surface. The second prism comprises a second polymeric material, which in some embodiments may be the same as the first polymeric material, and has a second outer curved surface.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: April 22, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: John E. Duncan, Michael W. O'Keefe, William E. Phillips, Jiaying Ma, Patrick R. Destain