Patents Represented by Attorney, Agent or Law Firm Christopher R. Christenson
  • Angle rejection filter
    Patent number: 6639239
    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: Grant
    Filed: September 17, 2001
    Date of Patent: October 28, 2003
    Assignee: CyberOptics Corporation
    Inventor: David W. Duquette