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    • 6. 发明授权
    • Photometric device with accumulation control
    • 具有积累控制的光度测量装置
    • US08670044B2
    • 2014-03-11
    • US13067647
    • 2011-06-16
    • Hiroshi Takeuchi
    • Hiroshi Takeuchi
    • H04N5/235H04N3/14H04N5/335
    • G03B7/099G03B7/091H04N5/23209H04N5/23212H04N5/238H04N2101/00
    • A photometric device includes a storage-type photometric sensor, a first control means that performs accumulation control on the photometric sensor based upon an average value of an output of the photometric sensor, a second control means that performs accumulation control on the photometric sensor based upon a maximum value of the output of the photometric sensor, and an accumulation control means that controls the second control means to perform next accumulation control, if the maximum value of the output of the photometric sensor on which the accumulation control is performed by the first control means exceeds a saturation output level of the photometric sensor, and controls the first control means to perform next accumulation control, if the maximum value of the output of the photometric sensor does not exceed the saturation output level of the photometric sensor.
    • 光度测量装置包括存储型测光传感器,第一控制装置,其基于测光传感器的输出的平均值对测光传感器进行累积控制;第二控制装置,其基于光度传感器执行累积控制 光度传感器的输出的最大值,以及控制第二控制装置进行下一累积控制的累积控制装置,如果通过第一控制执行累积控制的测光传感器的输出的最大值 如果光度传感器的输出的最大值不超过测光传感器的饱和输出电平,则控制第一控制装置进行下一次累积控制。