Patents by Inventor David W. Duquette

David W. Duquette 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).

  • Angle rejection filter
    Publication number: 20020070362
    Abstract: A method and apparatus reduces undesirable glints in an optical position alignment sensor designed to orient components. Collimated light is provided onto the component. A filter is positioned behind the components and is used to block glint generated by the components. The filter is tunable by rotating it about an axis in the plane of the component.
    Type: Application
    Filed: September 17, 2001
    Publication date: June 13, 2002
    Inventor: David W. Duquette
  • Methods and apparatus for controlling glint in a position alignment sensor
    Patent number: 6291830
    Abstract: A method and apparatus reduces two types of undesirable glints in an optical position alignment sensor designed to orient at least two components. In one aspect, a method includes using an aperture and a positive optic to block large angle glint generated by the components. In another aspect, a detector is positioned behind the image plane of the components to reduce the effect of small angle glint.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: September 18, 2001
    Assignee: CyberOptics Coporation
    Inventor: David W. Duquette