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    • 3. 发明授权
    • Apparatus for photographic exposure control
    • 摄影摄影控制装置
    • EP0049973B1
    • 1984-11-14
    • EP81304505.1
    • 1981-09-29
    • POLAROID CORPORATION
    • Johnson, Bruce KeanWhiteside, George d'Arcy
    • G03B7/16G03B7/099G03B9/42
    • G03B7/0993G03B7/16G03B7/17G03B9/42
    • Photographic exposure control apparatus for use in a camera incorporating an artificial light source is disclosed. Scene light is monitored through sets of secondary apertures in the main blade assembly of the camera, and the secondary apertures are so arranged with appropriate filters that a detector is provided with visible scene light for a first portion of the exposure period, a predetermined mixture of visible and infrared scene light for a second portion (70) of the exposure interval during which the artificial light is fired (strobe pulse), and exclusively visible scene light for a third and final portion of the exposure interval. Under conditions of medium or high ambient light, the detector meters exclusively visible light. If the artificial light is fired, the detector monitors principally the infrared light reflected from the subject, utilising the phenomenon that infrared light is more uniformly reflected from subjects than is visible light. A predetermined portion of visible light is monitored simultaneously over the second portion (70) of the exposure period during which the artificial light is fired, in order to avoid under-exposure of subjects in low ambient light which emit infrared light strongly, for example green plants.
    • 6. 发明公开
    • Exposure control for pseudo telephoto camera.
    • Belichtungskontrollefüreine Pseudotelephotokamera。
    • EP0206256A2
    • 1986-12-30
    • EP86108347
    • 1986-06-19
    • EASTMAN KODAK CO
    • HARVEY DONALD MALCOLM
    • G03B7/20G03B7/00G03B7/099G03B13/12G03B17/24
    • G03B17/24G03B7/0993G03B7/09976G03B7/09979G03B2206/004G03B2217/243
    • An exposure control for a pseudo telephoto camera having an objective lens (1) for focusing an image of a subject on a film frame (F) and a manually operated device (9) movable to select a pseudo telephoto field of view reduced from the actual field of view of the objective lens to cover only a portion of the subject, is characterized by comprising a photosensitive element (117) disposed to receive light reflected from the subject to provide a measure of the brightness of the light and a light control (3) responsive to movement of the manually operated device (9) to select the pseudo telephoto field of view for controlling the amount of light reaching the photosensitive element (117) in proportion to the amount of light available to the pseudo telephoto field of view.
    • 一种具有用于将被摄体的图像聚焦在胶片框架(F)上的物镜(1)和手动操作装置(9)的伪远摄照相机的曝光控制,该物镜可移动以从实际中减少伪远摄视场 物镜的视场仅覆盖被摄体的一部分,其特征在于包括设置成接收从被摄体反射的光以提供光的亮度的测量和光控制(3)的感光元件(117) )响应于手动操作的设备(9)的移动,以选择伪远摄视野,用于与伪远摄视野可用的光量成比例地控制到达感光元件(117)的光量。
    • 9. 发明公开
    • Apparatus for photographic exposure control
    • Vorrichtung zur photoischen Belichtungskontrolle。
    • EP0049973A1
    • 1982-04-21
    • EP81304505.1
    • 1981-09-29
    • POLAROID CORPORATION
    • Johnson, Bruce KeanWhiteside, George d'Arcy
    • G03B7/16G03B7/099G03B9/42
    • G03B7/0993G03B7/16G03B7/17G03B9/42
    • Photographic exposure control apparatus for use in a camera incorporating an artificial light source is disclosed. Scene light is monitored through sets of secondary apertures in the main blade assembly of the camera, and the secondary apertures are so arranged with appropriate filters that a detector is provided with visible scene light for a first portion of the exposure period, a predetermined mixture of visible and infrared scene light for a second portion (70) of the exposure interval during which the artificial light is fired (strobe pulse), and exclusively visible scene light for a third and final portion of the exposure interval. Under conditions of medium or high ambient light, the detector meters exclusively visible light. If the artificial light is fired, the detector monitors principally the infrared light reflected from the subject, utilising the phenomenon that infrared light is more uniformly reflected from subjects than is visible light. A predetermined portion of visible light is monitored simultaneously over the second portion (70) of the exposure period during which the artificial light is fired, in order to avoid under-exposure of subjects in low ambient light which emit infrared light strongly, for example green plants.
    • 公开了一种用于装有人造光源的相机中的照相曝光控制装置。 通过照相机的主叶片组件中的一组二次孔监测场景光,并且次级孔被布置成适当的过滤器,使得检测器具有用于曝光期的第一部分的可见场景光,预定的混合 用于在其中照射人造光的曝光间隔的第二部分(70)的可见光和红外场景光(选通脉冲),并且仅用于曝光间隔的第三和最后部分的可见场景光。 在中等或高中环境光的条件下,检测器仅可见光。 如果人造光被点燃,则检测器主要利用从可见光比红外光更均匀地反射的现象来监测从被摄体反射的红外光。 在人造光被照射的曝光期间的第二部分(70)上同时监测预定部分的可见光,以避免被强烈地发射红外光的低环境光中的被摄体曝光不足,例如绿色 植物。