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    • 2. 发明授权
    • Camera focus adjusting device for moving an imaging unit
    • 用于移动成像单元的摄像机对焦调整装置
    • US6067421A
    • 2000-05-23
    • US231777
    • 1999-01-15
    • Tomofumi KitazawaSaburoh SasakiTakashi Shimamura
    • Tomofumi KitazawaSaburoh SasakiTakashi Shimamura
    • G02B7/04G03B13/34
    • G02B7/04H04N5/2253H04N5/23212
    • A focus adjusting device which includes an imaging unit, such as a lens group, a film, a charge coupled device, a CMOS sensor, etc., and at least one electrostriction unit deforming based on an applied voltage and configured to move the imaging unit from the deforming. Further, positioned between the imaging unit and the at least one electrostriction unit is a mechanism for increasing or accumulating the deforming of the at least one electrostriction unit. The electrostriction unit can take the form of a laminate piezoelectric device. In one specific embodiment, the mechanism provided between the imaging unit and the at least one electrostriction unit is a lever which increases the deforming of the at least one electrostriction unit. In another embodiment, at least two electrostriction units are utilized and the mechanism provided between the at least two electrostriction units and the imaging unit is a coupling between the at least two electrostriction units which accumulates the deforming of each of the at least two electrostriction units. According to a further embodiment, the mechanism provided between the imaging unit and the at least one electrostriction unit is an elastic member with curved portions which increase the deforming of the at least one electrostriction unit in a direction perpendicular to a direction of the deforming of the at least one electrostriction unit.
    • 一种聚焦调节装置,其包括诸如透镜组,胶片,电荷耦合器件,CMOS传感器等的成像单元,以及至少一个基于所施加的电压变形的电致伸缩单元,并被配置成使成像单元 从变形。 此外,位于成像单元和至少一个电致伸缩单元之间的是用于增加或累积至少一个电致伸缩单元的变形的机构。 电致伸缩单元可以采用叠层压电装置的形式。 在一个具体实施例中,设置在成像单元和至少一个电子吸引单元之间的机构是增加至少一个电致伸缩单元的变形的杠杆。 在另一个实施例中,使用至少两个电致伸缩单元,并且在所述至少两个电子吸引单元和成像单元之间提供的机构是所述至少两个电致伸缩单元之间的耦合,所述至少两个电致伸缩单元累积所述至少两个电致伸缩单元中的每一个。 根据另一实施例,设置在成像单元和至少一个电致伸缩单元之间的机构是具有弯曲部分的弹性构件,其弯曲部分增加了至少一个电致伸缩单元在垂直于变形的方向的方向上的变形 至少一个电致伸缩单元。