Patents by Inventor Martin Chu

Martin 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).

  • Optical device
    Patent number: 6728041
    Abstract: An optical device includes a first input port, a first output port, a second output port, at least one filter, at least one reflector, a first reflection unit and a second reflection unit. The filter receives optical signals having wavelengths of &lgr;1 to &lgr;n from the first input port, selectively transmits the optical signal having a wavelength of &lgr;i, and reflects other optical signals, wherein 1≦i≦n. The first reflection unit reflects the optical signal having the wavelength of &lgr;i back to the filter, so that the optical signal having the wavelength of &lgr;i can pass through the filter and can be output from the first output port. The reflector reflects the optical signals having the wavelengths of &lgr;1 to &lgr;n except for &lgr;i from the filter.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: April 27, 2004
    Assignee: Delta Electronics, Inc.
    Inventors: Sean Chang, Hawk Chen, Martin Chu
  • Optical device
    Publication number: 20030184871
    Abstract: An optical device includes a first input port, a first output port, a second output port, at least one filter, at least one reflector, a first reflection unit and a second reflection unit. The filter receives optical signals having wavelengths of &lgr;1 to &lgr;n from the first input port, selectively transmits the optical signal having a wavelength of &lgr;i, and reflects other optical signals, wherein 1≦i≦n. The first reflection unit reflects the optical signal having the wavelength of &lgr;i back to the filter, so that the optical signal having the wavelength of &lgr;i can pass through the filter and can be output from the first output port. The reflector reflects the optical signals having the wavelengths of &lgr;1 to &lgr;n except for &lgr;i from the filter.
    Type: Application
    Filed: July 22, 2002
    Publication date: October 2, 2003
    Inventors: Sean Chang, Hawk Chen, Martin Chu