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    • 10. 发明授权
    • Electronic camera and focus control method which minimizes the time required for adjusting a focus
    • 电子照相机和聚焦控制方法,可最大限度地减少调整焦点所需的时间
    • US08514320B2
    • 2013-08-20
    • US12800217
    • 2010-05-11
    • Kenichi KikuchiKazuhiko Sugimoto
    • Kenichi KikuchiKazuhiko Sugimoto
    • G03B13/00H04N5/232
    • H04N5/23212G02B7/365G02B7/38G03B13/36
    • An electronic camera includes a shutter button. When the shutter button is half-depressed, a focal level of an object is determined on the basis of an image signal outputted from an imaging device, and a moving start position of a focus lens is settled on the basis of the determination result. More specifically, a correction amount of the moving start position is settled in accordance with the determination result of the focal level, and a position that subtracts the correction amount from a lens position at a time the shutter button being half-depressed is settled as the moving start position. The higher the focal level, the more reduced the correction amount. The focus lens gradually moves toward the imaging device from the settled moving start position, and a focal position is specified on the basis of the image signal outputted from the imaging device at each step.
    • 电子照相机包括快门按钮。 当快门按钮被半按下时,基于从成像装置输出的图像信号确定对象的焦点级别,并且基于确定结果来确定聚焦透镜的移动开始位置。 更具体地,根据焦点级别的确定结果确定移动开始位置的校正量,并且将半按下的快门按钮的透镜位置的校正量减去的位置作为 移动开始位置。 焦点水平越高,校正量越少。 聚焦透镜从稳定的移动开始位置逐渐朝向成像装置移动,并且基于在每个步骤从成像装置输出的图像信号来指定焦点位置。