TREA

Katsuhisa Tsutsumi

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  • Kawagoe City, JP
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Patents Applicationslast 30 patents

  • Information Patent Application

    ZOOM LENS AND IMAGING DEVICE
    • Publication number 20080239504
    • Publication date Oct 2, 2008
    • Katsuhisa TSUTSUMI
    • G02 - OPTICS
  • Information Patent Application

    Extender optical system
    • Publication number 20030151827
    • Publication date Aug 14, 2003
    • Katsuhisa Tsutsumi
    • G02 - OPTICS
  • Information Patent Application

    Retrofocus wide-angle lens
    • Publication number 20030137750
    • Publication date Jul 24, 2003
    • Katsuhisa Tsutsumi
    • G02 - OPTICS
  • Information Patent Application

    Mount conversion adaptor lens
    • Publication number 20020191302
    • Publication date Dec 19, 2002
    • Katsuhisa Tsutsumi
    • G02 - OPTICS