Patents by Inventor Juei-Tsang Hsu

Juei-Tsang Hsu 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).

  • Optical scanning apparatus
    Patent number: 6339490
    Abstract: An optical scanning apparatus having at least one f-&thgr; lens positioned on a rotary device. A collimated light beam is refracted to produce a linear scan by the rotation of the f-&thgr; lens by the rotary device. By not using a rotary polygonal mirror, the optical scanning apparatus has the advantages of better tolerance, less optical parts, easy assembly, low production cost and compact structure.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: January 15, 2002
    Assignee: Industrial Technology Research Institute
    Inventors: Juei-Tsang Hsu, Chun-Jung Chen