Patents by Inventor Tsutomu Yano

Tsutomu Yano 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).

  • Acousto-optic filter
    Patent number: 3944334
    Abstract: An acousto-optic filter utilizing the far-off-axis anisotropic Bragg diffraction comprising an optically anisotropic acousto-optic medium embodied by paratellurite. The light entrance surface is slanted to the crystalline axis to make a light beam incident perpendicularly to the surface. The light exit surface is slanted to the direction of the entrance surface to minimize the dispersion of diffracted angle due to light wave length.
    Type: Grant
    Filed: August 27, 1974
    Date of Patent: March 16, 1976
    Assignee: Matsushita Electric Industrial Company, Ltd.
    Inventors: Tsutomu Yano, Akinori Watanabe
  • Acousto-optic filter
    Patent number: 3944335
    Abstract: An acousto-optic filter utilizing the far-off-axis anisotropic Bragg diffraction comprising an optically anisotropic acousto-optic medium embodied by a paratellurite crystal. An ultrasonic wave generated by a transducer is propagated in a direction different from that of the wave front normal to make the light-sound interaction length in the medium elongate by slanting the bonding surface of the transducer to the crystal medium.
    Type: Grant
    Filed: August 27, 1974
    Date of Patent: March 16, 1976
    Assignee: Matsushita Electric Industrial Company, Ltd.
    Inventors: Koetsu Saito, Tsutomu Yano, Akinori Watanabe