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    • 71. 发明公开
    • Lens-shutter coupling unit
    • KobplungseinheitfürObjektivblende
    • EP1775628A1
    • 2007-04-18
    • EP06021507.6
    • 2006-10-13
    • SHARP KABUSHIKI KAISHA
    • Fujita, Hideaki
    • G03B9/08
    • G03B9/12G02B5/205G02B7/026
    • A lens-shutter coupling unit having a coupling structure of a lens shutter and a shutter unit capable of miniaturization and high-precision arrangement of a lens group, is provided. A shutter driving part (14) for moving shutter blades (12) and a filter driving part (15) for moving an ND filter (13) are disposed near an outer periphery of a protruding part (16) of a lens group (4) that protrudes from a barrel (3). The shutter drivingpart (14) and the filter driving part (15) can be disposed in a position (inner periphery) near an optical axis of the lens group (4). The center of rotation of the shutter blades (12) and the ND filter (13) can also be disposed near the optical axis (4x) of the lens group (4), and the shutter blades (12) and the ND filter (13) can be reduced in size. As a result, since the space at the time of retreat can be reduced, the shutter unit (5) can be reduced in size.
    • 提供一种具有能够使透镜组小型化和高精度布置的快门单元的耦合结构的透镜快门耦合单元。 用于移动快门叶片(12)的快门驱动部分(14)和用于移动ND滤色器(13)的滤色器驱动部分(15)设置在透镜组(4)的突出部分(16)的外周附近, 从桶(3)突出。 快门驱动部分(14)和过滤器驱动部分(15)可以设置在靠近透镜组(4)的光轴的位置(内周)。 快门叶片(12)和ND滤光片(13)的旋转中心也可以设置在透镜组(4)的光轴(4x)附近,并且快门叶片(12)和ND滤光片(13) )可以减小大小。 结果,由于可以减小撤退时的空间,因此可以减小快门单元(5)的尺寸。