Patents by Inventor Ming Her Chu

Ming Her Chu 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).

  • Structure of high-resolution polygon laser scanner
    Patent number: 4764672
    Abstract: An improved high-resolution laser scanner is able to make each mirror facet of a rotating polygon mirror generate two or more scanning beams through the use of beam splitting and projection by a beam splitter so as to increase the scanning speed and enhance the resolution quality. By means of adjustable reflectors, the two or more scanning beams are made to non-simultaneously impinge on the center of the same facet of the polygon mirror, wherefrom the scanning beams are focussed through a lens onto a photo-conductive drum.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: August 16, 1988
    Inventors: Jing Shown Wu, Ming Her Chu