Patents by Inventor Chia-di Lee

Chia-di Lee 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).

  • Scan line non-linearity correction using an aspheric element in a ROS system
    Patent number: 6621593
    Abstract: An aspheric optical element corrects the non-linearity of the scan line in a ROS. The optical element can be either the wobble correction mirror, the last optical element in the ROS, or the output window, subsequent to the ROS. The optical element deflects the scan beam to cancel the non-linearity of the scan line caused by the residual errors in the ROS lens design. The aspheric optical element can also correct scan line bow.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: September 16, 2003
    Assignee: Xerox Corporation
    Inventors: Mark Shi Wang, Chia-di Lee