Patents by Inventor Haruo Yanagita

Haruo Yanagita 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).

  • Rhomboid prism pair for rotating the plane of parallel light beams
    Patent number: 4355870
    Abstract: The object of the invention is to provide an optical system for rotating the plane defined by a pair of parallel light beams.In one embodiment (see FIG. 4) a single pair of rhomboid prisms 36 and 37 have their respective input faces 15 disposed to receive the respective input beams 21 and 22. Each prism is rotated about an axis of revolution coaxial with each of the respective input beams 21 and 22 by means of a suitable motor 29 and gear arrangement 41 to cause the plane of the parallel output beams 21' and 22' to be rotated relative to the plane of the input beams.In a second embodiment, two pairs (FIG. 2) of rhomboid prisms 23, 24 and 31, 32 are provided. In a first angular orientation of the output beams, prisms 23 and 24 serve to merely decrease the lateral displacement of the output beams for keeping the beams in the same plane as the input beams. In a second angular orientation of the prisms (FIG.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: October 26, 1982
    Inventors: Alan M. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Kenneth L. Orloff, Haruo Yanagita