Patents by Inventor Nubuhiko Umezu

Nubuhiko Umezu 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).

  • Light beam deflector devices
    Patent number: 4889415
    Abstract: A light beam deflection device comprises an acoustooptic element including a piezoelectric crystal base with a first flat surface and second and third flat surfaces each perpendicular to the first flat surface and opposite to each other and a transducer attached to the first flat surface of the piezoelectric crystal base and supplied with a deflection control signal, a first lens element having a first cylindrical surface forming a cylindrical lens and a first slanted flat surface opposite to the first cylindrical surface and disposed so that the first cylindrical surface faces the second flat surface of the piezoelectric crystal base, and a second lens element having a second cylindrical surface forming a cylindrical lens and a second slanted flat surface opposite to the second cylindrical surface and disposed so that the second cylindrical surface faces the third flat surface of the piezoelectric crystal base.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: December 26, 1989
    Assignee: Sony Corporation
    Inventor: Nubuhiko Umezu