Patents by Inventor Youji Yamanaka

Youji Yamanaka 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).

  • Microlens array substrate and method of manufacturing microlens array substrate
    Publication number: 20070046862
    Abstract: An optical component of the present invention is a microlens array formed on a transparent substrate made of glass and having multiple microlenses made mainly of glass. The adjacent microlenses are coupled by the same glass material as the microlenses. The expansion coefficient of the lenses is substantially equal to the expansion coefficient of the transparent substrate. The thickness ? at the boundary between the adjacent microlenses is 0.1 ?m???200 ?m.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 1, 2007
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Nobuhiro Umebayashi, Youji Yamanaka