Patents by Inventor Yuuichi TAKEI

Yuuichi TAKEI 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 HEAD DEVICE AND METHOD OF ADJUSTING CHARACTERISTIC OF OPTICAL HEAD DEVICE
    Publication number: 20090022034
    Abstract: In an optical head device having a laser light source, an output adjusting member for adjusting the output of laser light emitted from the laser light source and a frame for supporting the laser light source and the output adjusting member, the output adjusting member has an adjusting circuit board for adjusting an electrical resistance value, and a plurality of circuits on which chip resistors and short lands are connected to one another in parallel are connected in series.
    Type: Application
    Filed: June 16, 2008
    Publication date: January 22, 2009
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Yuuichi TAKEI, Katsuyoshi MIYASAKA