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    • 3. 发明授权
    • Blur prevention device for preventing image blur
    • 防止图像模糊的模糊防止装置
    • US5715479A
    • 1998-02-03
    • US553198
    • 1995-11-07
    • Akira KatayamaYoshio ImuraTadao KaiYasushi SakagamiEtsuo Tanaka
    • Akira KatayamaYoshio ImuraTadao KaiYasushi SakagamiEtsuo Tanaka
    • G03B5/06G03B17/00
    • G03B5/06G03B2205/0015G03B2205/0053
    • A blur prevention device is equipped with first and second drive units which can move a blur prevention lens in a plane orthogonal to an optical axis of a main optical system. First and second transfer units transfer the amount of movement of the drive units to the blur prevention lens and first and second transfer receiving units receive the amount of movement in the respective directions from the respective transfer units. Each of the transfer receiving units can move relative to the one transfer unit other than the respective transfer unit. The blur prevention device has a specified direction for one of the transfer units and allows a degree of freedom outside the movement in the specified direction to the other transfer unit. Restriction gears, which are part of the drive units, restrict the amount of movement of the blur prevention lens in the plane orthogonal to the optical axis. And, by integrating a lens shutter or aperture with the blur prevention device, the blur prevention lens may be easily positioned in a central position of its drive range.
    • 模糊防止装置配备有第一和第二驱动单元,其可以在与主光学系统的光轴正交的平面中移动防模糊透镜。 第一和第二传送单元将驱动单元的移动量传递到防模糊透镜,并且第一和第二传送接收单元从各个传送单元接收各个方向上的移动量。 每个传送接收单元可以相对于除了相应的传送单元之外的一个传送单元移动。 模糊防止装置对于一个传送单元具有指定的方向,并且允许在指定方向上的移动之外的另一个传送单元的自由度。 作为驱动单元的一部分的限制齿轮限制防止模糊透镜在与光轴正交的平面中的移动量。 并且,通过将透镜快门或光圈与模糊防止装置集成,防模糊透镜可以容易地定位在其驱动范围的中心位置。