Patents by Inventor Brian Dewan

Brian Dewan 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).

  • Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device
    Patent number: 5905567
    Abstract: An apparatus for optimizing sub-pixel resolution in a triangulation based target distance measuring device at a desired stand-off distance has a laser light source projecting a light beam along a light beam axis so as to project a light spot onto a surface of a workpiece, a lens having an optical axis and a depth of focus dependant on the target distance, the lens for gathering light reflected from the light spot on the surface of the workpiece, a linear photodetector array of adjacent light detecting pixels, the array having a longitudinal array axis, the array for detecting light impinging the pixels and generating an output signal indicative of the position of the pixels being impinged by the light, the light beam axis, the optical axis, and the longitudinal array axis co-planar, the lens imaging the reflected light across and impinging the array so as to form an image across the array, the output signal indicative of an intensity profile of the image impinging the array, the image defocused to a near-Sche
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: May 18, 1999
    Assignee: CAE Newnes Ltd.
    Inventor: Brian Dewan
  • Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device
    Patent number: 5627635
    Abstract: An apparatus for optimizing sub-pixel resolution in a triangulation based target distance measuring device at a desired stand-off distance has a laser light source projecting a light beam along a light beam axis so as to project a light spot onto a surface of a workpiece, a lens having an optical axis and a depth of focus dependant on the target distance, the lens for gathering light reflected from the light spot on the surface of the workpiece, a linear photodetector array of adjacent light detecting pixels, the array having a longitudinal array axis, the array for detecting light impinging the pixels and generating an output signal indicative of the position of the pixels being impinged by the light, the light beam axis, the optical axis, and the longitudinal array axis co-planar, the lens imaging the reflected light across and impinging the array so as to form an image across the array, the output signal indicative of an intensity profile of the image impinging the array, the image defocussed so as to opti
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: May 6, 1997
    Assignee: Newnes Machine Ltd.
    Inventor: Brian Dewan