Patents by Inventor Osamu Oosawa

Osamu Oosawa 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).

  • Irradiation device for polarized light for optical alignment of a liquid crystal cell element
    Patent number: 6652111
    Abstract: An improved irradiation device for polarized light for optical alignment of a liquid crystal cell element includes a lamp, a focusing mirror for focusing of the light of the lamp, an integrator lens, and a polarization element in which the polarization element is made such that several glass plates, which are located parallel to one another at a distance, are tilted by the Brewster angle with reference to the optical axis. The rotary motion of the above described polarization element around the center of the light beam incident in the polarization element (light beam being the axis of rotation), changes the polarization direction of the polarized light with which the alignment layer of the liquid crystal cell element is irradiated. The polarization element may be located in the vicinity of the integrator lens.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: November 25, 2003
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Shinji Suzuki, Osamu Oosawa
  • Irradiation device for polarized light for optical alignment of a liquid cell element
    Publication number: 20030086254
    Abstract: An improved irradiation device for polarized light for optical alignment of a liquid crystal cell element includes a lamp, a focusing mirror for focusing of the light of the lamp, an integrator lens, and a polarization element in which the polarization element is made such that several glass plates, which are located parallel to one another at a distance, are tilted by the Brewster angle with reference to the optical axis. The rotary motion of the above described polarization element around the center of the light beam incident in the polarization element (light beam being the axis of rotation), changes the polarization direction of the polarized light with which the alignment layer of the liquid crystal cell element is irradiated. The polarization element may be located in the vicinity of the integrator lens.
    Type: Application
    Filed: December 3, 2002
    Publication date: May 8, 2003
    Applicant: Ushiodenki Kabushiki Kaisha
    Inventors: Shinji Suzuki, Osamu Oosawa
  • Irradiation device for polarized light for optical alignment of a liquid crystal cell element
    Patent number: 6532047
    Abstract: An improved irradiation device for polarized light for optical alignment of a liquid crystal cell element includes a lamp, a focusing mirror for focusing of the light of the lamp, an integrator lens, and a polarization element in which the polarization element is made such that several glass plates, which are located parallel to one another at a distance, are tilted by the Brewster angle with reference to the optical axis. The rotary motion of the above described polarization element around the center of the light beam incident in the polarization element (light beam being the axis of rotation), changes the polarization direction of the polarized light with which the alignment layer of the liquid crystal cell element is irradiated. The polarization element may be located in the vicinity of the integrator lens.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: March 11, 2003
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Shinji Suzuki, Osamu Oosawa