Patents by Inventor David Cohan

David Cohan 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).

  • Time-of-flight camera with guided light
    Patent number: 9056254
    Abstract: A gaming system comprising a time-of-flight 3D camera and related method for illuminating a camera field of view and capturing return image light are disclosed herein. In one example, the time-of-flight 3D camera includes a light source configured to emit source light along an optical axis, and a collimator configured to receive and collimate the source light to create collimated light. A refractive diffuser is operable to be tuned to the camera field of view and configured to receive and diffuse the collimated light to create refracted light having a varying intensity profile. The refractive diffuser is further configured to guide the refracted light to illuminate only a portion of the camera field of view to reduce wasted source light.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: June 16, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Asaf Pellman, David Cohan, Giora Yahav
  • TIME-OF-FLIGHT CAMERA WITH GUIDED LIGHT
    Publication number: 20150024847
    Abstract: A gaming system comprising a time-of-flight 3D camera and related method for illuminating a camera field of view and capturing return image light are disclosed herein. In one example, the time-of-flight 3D camera includes a light source configured to emit source light along an optical axis, and a collimator configured to receive and collimate the source light to create collimated light. A refractive diffuser is operable to be tuned to the camera field of view and configured to receive and diffuse the collimated light to create refracted light having a varying intensity profile. The refractive diffuser is further configured to guide the refracted light to illuminate only a portion of the camera field of view to reduce wasted source light.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Inventors: Asaf Pellman, David Cohan, Giora Yahav
  • Time-of-flight camera with guided light
    Patent number: 8854426
    Abstract: A time-of-flight 3D camera and related method for illuminating a camera field of view and capturing return image light are disclosed herein. In one example, the time-of-flight 3D camera includes a light source that emits source light along an optical axis, and a collimator that receives and collimates the source light to create collimated light. A refractive diffuser is tuned to the camera field of view and receives and diffuses the collimated light to create refracted light having a varying intensity profile. The refractive diffuser guides the refracted light to illuminate the camera field of view to reduce wasted source light.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: October 7, 2014
    Assignee: Microsoft Corporation
    Inventors: Asaf Pellman, David Cohan, Giora Yahav
  • TIME-OF-FLIGHT CAMERA WITH GUIDED LIGHT
    Publication number: 20130116049
    Abstract: A time-of-flight 3D camera and related method for illuminating a camera field of view and capturing return image light are disclosed herein. In one example, the time-of-flight 3D camera includes a light source that emits source light along an optical axis, and a collimator that receives and collimates the source light to create collimated light. A refractive diffuser is tuned to the camera field of view and receives and diffuses the collimated light to create refracted light having a varying intensity profile. The refractive diffuser guides the refracted light to illuminate the camera field of view to reduce wasted source light.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 9, 2013
    Applicant: MICROSOFT CORPORATION
    Inventors: Asaf Pellman, David Cohan, Giora Yahav