TREA

Protection against viewer backlight or integration of the viewer light into the measured light

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Industry

  • CPC
  • G03B7/09978
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Parent Industries

GPHYSICS G03Photography G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES ACCESSORIES THEREFOR G03B7/00Control of exposure by setting shutters, diaphragms or filters, separately or conjointly

Current Industry

G03B7/09978Protection against viewer backlight or integration of the viewer light into the measured light
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Camera equipped with a photometric value compensating device
    • Patent number 5,579,077
    • Issue date Nov 26, 1996
    • Nikon Corporation
    • Masao Owashi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photometer for use in a camera
    • Patent number 4,809,031
    • Issue date Feb 28, 1989
    • Ricoh Company, Ltd.
    • Touru Sakaguchi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3890627
    • Patent number 3,890,627
    • Issue date Jun 17, 1975
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3810202
    • Patent number 3,810,202
    • Issue date May 7, 1974
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3783765
    • Patent number 3,783,765
    • Issue date Jan 8, 1974
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    3327600
    • Patent number 3,327,600
    • Issue date Jun 27, 1967
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY