Patents by Inventor Osamu Kawada

Osamu Kawada 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 apparatus for simultaneously observing a transparent object from two directions
    Patent number: 4682864
    Abstract: In order to simultaneously observe a transparent object from two directions, first and second beam paths containing first and second images from two directions are separated using a prism to reflect the second beam path yet pass the first beam path. The length of the second beam path is caused to be different from that of the first beam path. Then the first and second beam paths are combined so that the first and second images may be viewed simultaneously. The different beam path lengths result in the first and second images being formed at the same position. As a result, the images carried by the first and second beam paths, both passing through a single objective lens, may be viewed simultaneously at a single location.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: July 28, 1987
    Assignees: Nippon Telegraph & Telephone Corporation, Nippon Kogaku K.K.
    Inventors: Toshiaki Kakii, Koichiro Matsuno, Osamu Kawada, Ryozo Ito, Eiji Nakamura