Patents by Inventor Yuhsuke Nanjoh

Yuhsuke Nanjoh 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).

  • Variable aberration lens system
    Patent number: 4273424
    Abstract: A variable aberration lens system usable not only as a general photographic lens but also a soft focus lens is provided. The variable aberration lens system includes at least a variable meniscus-shaped air space and cementing surface which are respectively concave against a stop provided therein. A very high resolving power and high contrast can be obtained when the variable aberration lens system is used as the general photographic lens, and a photograph in which an out focus image of the background or foreground is fine can be obtained by varying the width of the air space when the variable aberration lens system is used as the soft focus lens.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: June 16, 1981
    Assignee: Mamiya Koki Kabushiki Kaisha (Mamiya Camera Co., Ltd.)
    Inventor: Yuhsuke Nanjoh