Patents by Inventor Junichirou Shinozaki

Junichirou Shinozaki 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).

  • Projection type liquid crystal display system and method of polarized light component projection
    Patent number: 5278680
    Abstract: A projection type liquid crystal display (LCD) system having a light source, a light separation device for separating light from the light source into color components, a liquid crystal light valve for modulating light from the light separation device, a light synthesizing device for synthesizing the modulated light from the liquid crystal light valve, and a projection lens for projecting light from the light synthesizing device. A polarizing beam splitter is arranged in the optical path between the light source and the light separation device to separate the incident light into two polarized light components having perpendicular polarization directions relative to each other and a polarizing conversion device converts the separated polarized light components to have the same polarization direction and transmits them from the conversion device in spatial parallel relation to the liquid crystal light valve.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: January 11, 1994
    Assignee: Seiko Epson Corporation
    Inventors: Johji Karasawa, Junichirou Shinozaki
  • Polarized synthesization in projection type liquid crystal displays
    Patent number: 5200843
    Abstract: A projection type liquid crystal display (LCD) system having a light source, a light separation device for separating light from the light source into color components, a liquid crystal light valve for modulating light from the light separation device, a light synthesizing device for synthesizing the modulated light from the liquid crystal light valve, and a projection lens for projecting light from the light synthesizing device. A polarizing beam splitter is arranged in the optical path between the light source and the light separation device to separate the incident light into two polarized light components having perpendicular polarization directions relative to each other and a polarizing conversion device converts the separated polarized light components to have the same polarization direction and transmits them from the conversion device in spatial parallel relation to the liquid crystal light valve.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: April 6, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Johji Karasawa, Junichirou Shinozaki