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    • 87. 发明授权
    • Image scanning signal generating apparatus with pre-scan for exposure
control
    • 具有用于曝光控制的预扫描的图像扫描信号发生装置
    • US4651226A
    • 1987-03-17
    • US661829
    • 1984-10-17
    • Ryuzo MotooriMakoto KimuraMasaki IsogaiAkimasa SatoAtsushi Kawahara
    • Ryuzo MotooriMakoto KimuraMasaki IsogaiAkimasa SatoAtsushi Kawahara
    • H04N1/40H04N1/407H04N1/10H04N3/04
    • H04N1/40056H04N1/4072
    • An image signal generating apparatus includes an optical system for focusing the image of a photographic film onto a predetermined plane and a scanning device for scanning the image with a photoreceptor positioned at the predetermined plane and generating output signals representing the light intensity distribution of the film. The scanning device performs a first scan of the image and a second scan of the image upon completion of the first scan. During the first scan the levels of the output signals indicative of the maximum density and the minimum density of the film are detected, and during the second scan the exposure of the photoreceptor is controlled in accordance with the detected levels. Also, during the second scan, the output signals are clamped to a clamp level calculated in accordance with the detected maximum density level and the minimum level of the output signals during the first scan.
    • 图像信号产生装置包括用于将照相胶片的图像聚焦到预定平面上的光学系统和用于利用位于预定平面处的感光体扫描图像的扫描装置,并产生表示胶片的光强度分布的输出信号。 扫描装置在完成第一次扫描时执行图像的第一次扫描和图像的第二次扫描。 在第一扫描期间,检测指示膜的最大密度和最小密度的输出信号的电平,并且在第二次扫描期间,根据检测到的电平来控制感光体的曝光。 此外,在第二扫描期间,输出信号被钳位到根据检测到的最大浓度水平和在第一扫描期间的输出信号的最小电平计算的钳位电平。
    • 88. 发明授权
    • Focus detecting device for camera
    • 相机聚焦检测装置
    • US4473287A
    • 1984-09-25
    • US389049
    • 1982-06-16
    • Toru FukuharaMakoto Kimura
    • Toru FukuharaMakoto Kimura
    • G03B13/36G02B7/28G02B7/34G03B13/18
    • G02B7/346
    • Focus detecting device comprises a focus detecting optical system for guiding the light from an object onto a focus detecting plane, focus detecting means for identifying the focusing state from the image of the object formed on the focus detecting plane, means for generating a signal corresponding to the controlled actual F-number of the photographic optical system, means for generating a correction signal corresponding to the displacement of the optimum image plane of the photographing optical system according to the change of the controlled F-number, and means for correcting the output signal of the focus detecting means according to the correction signal.
    • 焦点检测装置包括:聚焦检测光学系统,用于将来自物体的光引导到焦点检测平面;焦点检测装置,用于从形成在焦点检测平面上的物体的图像中识别聚焦状态,用于产生对应于 照相光学系统的受控实际F数,用于根据受控F数的变化产生与拍摄光学系统的最佳图像平面的位移相对应的校正信号的装置,以及用于校正输出信号的装置 的焦点检测装置。
    • 90. 发明授权
    • Interchangeable finder device
    • 可互换取景装置
    • US4401374A
    • 1983-08-30
    • US299513
    • 1981-09-04
    • Makoto KimuraHiroshi Terunuma
    • Makoto KimuraHiroshi Terunuma
    • G03B13/02G03B19/12G03B7/08
    • G03B19/12
    • An interchangeable finder device of a single lens reflex camera has a finder optical system in which a focusing screen, a pentaprism and an eyepiece are fixed in a predetermined positional relation, a casing containing the optical system therein, and a mounting-dismounting device provided on the casing to mount the casing to the camera body. The finder device further has a sliding mechanism for supporting the finder optical system slidably in a direction perpendicular to the focus surface of the focusing screen relative to the mounting-dismounting mechanism so that the finder optical system can move in said perpendicular direction independently of the mounting-dismounting device when the casing is mounted to the camera body by means of the mounting-dismounting device.
    • 单透镜反光相机的可互换取景装置具有取景器光学系统,其中聚焦屏幕,五棱镜和目镜以预定的位置关系固定,其中包含光学系统的外壳和设置在其上的安装拆卸装置 外壳将外壳安装到相机机身上。 取景器装置还具有滑动机构,用于相对于安装拆卸机构在垂直于聚焦屏的焦点表面的方向上可滑动地支撑取景器光学系统,使得取景器光学系统可以在垂直方向上独立于安装 通过安装拆卸装置将外壳安装到照相机主体上时,拆卸装置。