Patents by Inventor Kazuhiko Shihoyama

Kazuhiko Shihoyama 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).

  • Method and device for processing inside of transparent material
    Publication number: 20060091122
    Abstract: A shape with a substantially perfect sphere, or a cross-sectional shape with a substantially perfect circle in a direction parallel to an advance direction of a femtosecond laser light beam, is obtained as a processed shape such as a modified shape of a worked shape. Rays of femtosecond laser light (L1, L2) are entered into lenses (16, 20), respectively, and the rays of laser light are focused inside a transparent material (100) by the lenses such that each of the optical axes of the rays has a predetermined angle. The light focus positions of the rays of femtosecond laser light are superposed inside the transparent material and the inside of the material is processed.
    Type: Application
    Filed: May 15, 2003
    Publication date: May 4, 2006
    Applicant: HOYA CANEO OPTRONICS CORPORATION
    Inventors: Koji Sugioka, Ya Cheng, Katsumi Midorikawa, Kazuhiko Shihoyama