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    • 74. 发明授权
    • Automatic focus adjusting device
    • 自动调焦装置
    • US4541702A
    • 1985-09-17
    • US667058
    • 1984-10-31
    • Haruhiko MomoseToshiaki TakahashiYasushi HoshinoKohji MatsushimaMichio Yagi
    • Haruhiko MomoseToshiaki TakahashiYasushi HoshinoKohji MatsushimaMichio Yagi
    • G03B13/36G02B7/28G02B7/32G03B3/00
    • G02B7/32
    • Automatic focus adjusting device comprising a range finding means which generates a signal corresponding to a distance to an object to be photographed; means for setting a photographing lens to a position corresponding to the output signal from the range finding means; a primary judging means which judges whether or not a diaphragm setting is within the range in which fixed focus photographing is possible or not; and a secondary judging means which judges whether an output signal from the range finding means is at a level capable of operating an automatic focusing means, wherein the secondary judging means judges only when the primary judging means judges that a diaphragm setting is not within the range in which fixed focus photography is possible and the automatic focusing means is operated only when the secondary judging means judges the output signal is at a level capable of operating the automatic focusing means.
    • 自动对焦调整装置,其包括:距离寻找装置,其生成对应于要拍摄对象的距离的信号; 用于将拍摄镜头设置到与来自所述测距装置的输出信号相对应的位置的装置; 判断光阑设置是否在可能进行固定焦点拍摄的范围内的主判定装置; 以及二次判断装置,其判断来自测距装置的输出信号是否处于能够操作自动聚焦装置的水平,其中,次要判定装置仅在主判定装置判断为不在该范围内的光阑设定 其中可以进行固定焦点拍摄,并且只有当二次判断装置判断输出信号处于能够操作自动聚焦装置的水平时,自动聚焦装置才被操作。