Patents by Inventor Takayoshi Togino

Takayoshi Togino 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).

  • Microscope objective
    Patent number: 4521083
    Abstract: A microscope objective comprising a first, second, third, fourth, fifth and sixth lens components wherein the first and second lens components are positive lenses respectively, the third lens component is a positive cemented lens, the fourth lens component is a cemented meniscus lens arranged to be convex toward the object side, the fifth lens component is a cemented meniscus lens arranged to be concave toward the object side, and the sixth lens component is a positive cemented doublet, the microscope objective having the magnification about 20X and N.A. about 0.4 and, at the same time, having a long working distance and flat image surface.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: June 4, 1985
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Takayoshi Togino