Patents by Inventor Mitsuhara Sawamura

Mitsuhara Sawamura 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).

  • Polarization beam splitter and method of producing the same
    Publication number: 20050012997
    Abstract: Disclosed is a polarization beam splitter and a method of producing the same, in which the polarization beam splitter has superior polarization separation efficiency and has small angle dependence. A transparent base material having a polarization separation film, comprising a dielectric multilayered film, is cemented at the cemented surface of the beam splitter, to provide an array-like plane type polarization beam splitter, wherein an incidence angle ?g of light upon the polarization separation film is selected to satisfy a relation ?g>45 deg.
    Type: Application
    Filed: August 13, 2004
    Publication date: January 20, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Mitsuhara Sawamura
  • Polarization beam splitter and method of producing the same
    Publication number: 20030107808
    Abstract: Disclosed is a polarization beam splitter and a method of producing the same, in which the polarization beam splitter has superior polarization separation efficiency and has small angle dependence. A transparent base material having a polarization separation film, comprising a dielectric multilayered film, is cemented at the cemented surface of the beam splitter, to provide an array-like plane type polarization beam splitter, wherein an incidence angle &thgr;g of light upon the polarization separation film is selected to satisfy a relation &thgr;g>45 deg.
    Type: Application
    Filed: June 28, 2002
    Publication date: June 12, 2003
    Inventor: Mitsuhara Sawamura