Patents by Inventor Saho Yamada

Saho Yamada 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).

  • Publication number: 20090168016
    Abstract: An object of the present invention is to provide a visual training apparatus in which a trainee can make accommodation of the trainee's eye easily when the trainee is training. The visual training apparatus includes a display member 1, an optical system 2, a base 3 and a housing 4. The display member 1 displays a training image, and is fixed to the base 3 so as to cross an optic axis 51 of a trainee 5 substantially perpendicularly thereto. The optical system 2 includes a lens 21, a feed screw 22 and a motor 23. When the motor 23 is driven, the lens 21 moves along the optic axis 51 with the aid of the feed screw 22. Thus, the optical characteristic of the optical system 2 is changed so that the optical distance between the eye position of the trainee 5 and the display member 1 can be changed. The display member 1 displays a training image having dimensions proportional to the optical distance between the eye position of the trainee and the display member 1.
    Type: Application
    Filed: July 11, 2005
    Publication date: July 2, 2009
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., TECHNOMASTER CO., LTD.
    Inventors: Eiichi Ohkawa, Hisashi Hagiwara, Fumiaki Emoto, Saho Yamada