Patents by Inventor Leu William

Leu William 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).

  • Flatbed scanner with top and bottom light sources and a moveable light shield
    Patent number: 6185011
    Abstract: The present invention relates to a flatbed scanner with both a top light source and a bottom light source which can be easily switched by using a top light shield to scan transparent documents and opaque documents. The scanner comprises a housing, a scanning module, a top cover, a top light source, and light shield. The housing comprises a transparent platform for placing a document. The scanning module is slidably installed inside the housing for scanning the document placed on the transparent platform. The scanning module comprises a bottom light source for emitting light upward toward the document and an image converter for converting an image of the document into a digital image. The top cover is movably installed on the housing. The top light source is installed under the top cover for emitting light downward toward the document when the top cover is placed on the transparent platform. The light shield is movably installed under the top cover for shielding the top light source.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: February 6, 2001
    Assignee: Acer Peripherals, Inc.
    Inventor: Leu William