the sensor being mounted in, before, or behind the porro-prism

Patents Grantslast 30 patents

  • Information Patent Grant

    Focus detection sensor

    • Patent number 9,374,518
    • Issue date Jun 21, 2016
    • Canon Kabushiki Kaisha
    • Satoshi Suzuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Photometry apparatus and camera

    • Patent number 8,077,251
    • Issue date Dec 13, 2011
    • Canon Kabushiki Kaisha
    • Ryo Yamasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Imaging apparatus

    • Patent number 7,876,367
    • Issue date Jan 25, 2011
    • Nikon Corporation
    • Masaru Muramatsu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Flash control system

    • Patent number 6,707,997
    • Issue date Mar 16, 2004
    • PENTAX Corporation
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometry device for a camera including external light sensor

    • Patent number 6,510,284
    • Issue date Jan 21, 2003
    • PENTAX Corporation
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Flash photography system with preliminary and main emission

    • Patent number 6,363,221
    • Issue date Mar 26, 2002
    • Canon Kabushiki Kaisha
    • Tatsuyuki Tokunaga
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Single-lens reflex camera

    • Patent number 6,249,650
    • Issue date Jun 19, 2001
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Shigeru Iwamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera provided with photometry device

    • Patent number 6,175,693
    • Issue date Jan 16, 2001
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Yoshikazu Iida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Exposure operation mechanism of camera

    • Patent number 6,167,200
    • Issue date Dec 26, 2000
    • Minolta Co., Ltd.
    • Motoshi Yamaguchi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electronic flash control device

    • Patent number 6,154,612
    • Issue date Nov 28, 2000
    • Nikon Corporation
    • Hiroyuki Iwasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Flash photography system

    • Patent number 6,067,422
    • Issue date May 23, 2000
    • Canon Kabushiki Kaisha
    • Tatsuyuki Tokunaga
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Colorimetric device for use in a camera

    • Patent number 6,021,279
    • Issue date Feb 1, 2000
    • Nikon Corporation
    • Tsuyako Matsushita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometering apparatus

    • Patent number 6,014,273
    • Issue date Jan 11, 2000
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera photometry device

    • Patent number 5,887,204
    • Issue date Mar 23, 1999
    • Nikon Corporation
    • Hiroyuki Iwasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Device and method for sensing brightness

    • Patent number 5,748,996
    • Issue date May 5, 1998
    • Samsung Aerospace Industries, Ltd.
    • Ki-yul Lee
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera system with color temperature meter

    • Patent number 5,710,948
    • Issue date Jan 20, 1998
    • Nikon Corporation
    • Tadao Takagi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometer for a camera

    • Patent number 5,678,079
    • Issue date Oct 14, 1997
    • Niko Corporation
    • Hidehiro Ogawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera and print information control apparatus

    • Patent number 5,666,578
    • Issue date Sep 9, 1997
    • Nikon Corporation
    • Yoshiro Oikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Auto-exposure device of a camera

    • Patent number 5,596,387
    • Issue date Jan 21, 1997
    • Nikon Corporation
    • Tadao Takagi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera photometer

    • Patent number 5,585,885
    • Issue date Dec 17, 1996
    • Nikon Corporation
    • Masaru Muramatsu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera

    • Patent number 5,552,845
    • Issue date Sep 3, 1996
    • Olympus Optical Co., Ltd.
    • Masaki Nagao
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Exposure calculation device for a camera

    • Patent number 5,541,706
    • Issue date Jul 30, 1996
    • Nikon Corporation
    • Tetsuro Goto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometric control device for camera

    • Patent number 5,526,092
    • Issue date Jun 11, 1996
    • Nikon Corporation
    • Hiroyuki Iwasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera photometry system

    • Patent number 5,497,215
    • Issue date Mar 5, 1996
    • Nikon Corporation
    • Hiroyuki Iwasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Light metering calculation apparatus

    • Patent number 5,414,487
    • Issue date May 9, 1995
    • Nikon Corporation
    • Hiroyuki Iwasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Automatic flash limiting apparatus in a camera

    • Patent number 5,371,568
    • Issue date Dec 6, 1994
    • Nikon Corporation
    • Tadao Takagi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Finder indication optical system in a single-lens reflex camera

    • Patent number 5,349,404
    • Issue date Sep 20, 1994
    • Nikon Corporation
    • Kenji Yamada
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometering apparatus of camera for variably weighting different...

    • Patent number 5,289,225
    • Issue date Feb 22, 1994
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometering device in single lens reflex camera

    • Patent number 5,278,607
    • Issue date Jan 11, 1994
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Kazuo Goto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Automatic light modulating camera

    • Patent number 5,268,730
    • Issue date Dec 7, 1993
    • Nikon Corporation
    • Tadao Takagi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    FOCUS DETECTION SENSOR

    • Publication number 20140347505
    • Publication date Nov 27, 2014
    • Canon Kabushiki Kaisha
    • Satoshi Suzuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Imaging apparatus

    • Publication number 20090040338
    • Publication date Feb 12, 2009
    • Nikon Corporation
    • Masaru Muramatsu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    PHOTOMETRY APPARATUS AND CAMERA

    • Publication number 20080111991
    • Publication date May 15, 2008
    • Canon Kabushiki Kaisha
    • Ryo Yamasaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Flash control system

    • Publication number 20030068165
    • Publication date Apr 10, 2003
    • PENTAX CORPORATION
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    FLASH PHOTOGRAPHY SYSTEM WITH PRELIMINARY AND MAIN EMISSION

    • Publication number 20020034382
    • Publication date Mar 21, 2002
    • Tatsuyuki Tokunaga
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Photometry device

    • Publication number 20010010762
    • Publication date Aug 2, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Isamu Hirai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY