Patents by Inventor Yasutoshi Nakashima

Yasutoshi Nakashima 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).

  • Patent number: 5206760
    Abstract: There is provided the construction of a multiprojection apparatus composed of a plurality of projection units arranged in the vertical and horizontal directions, in which a transparent holding strip having an H-shaped cross section is inserted between screens each composed of a lenticular sheet and a Fresnel lens, and the right and left ends of a multiscreen are supported by elastic support members, or in which a receive member for receiving the screen in the direction of the optical axis and a screen holding device are provided, the receive member has such a shape as not to block projection light corresponding to an image on the screen and is located near a joint of the screen and another screen, and the holding device is disposed on a black stripe of the lenticular sheet and always pulled by an elastic member toward the receive member. Therefore, according to the present invention, it is possible to restrict the missing of information due to joints of the screens.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: April 27, 1993
    Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.
    Inventors: Akio Nakashima, Junichi Ikoma, Yasutoshi Nakashima, Sadayuki Nishimura, Yoshihisa Hosoe, Tatsumi Hasebe, Akira Okamoto