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Invention Grant
US07933081B2 Focusing device and imaging device 有权
聚焦装置和成像装置

Focusing device and imaging device
Abstract:
A focusing device of simple construction that is miniaturizable, and an imaging device utilizing the same, are provided. A focusing device (10) comprises an actuator (11), a lens holder (12) that holds lenses (13a) and (13b), and a holder support base (14) upon which the lens holder (12) is installed. The actuator (11) comprises a polymer layer (51), a positive electrode (52) that is formed upon the holder support base (14), and a negative electrode (53) that is formed upon the lens holder (12). When the applied voltage between the positive electrode (52) and the negative electrode (53) rises, the polymer layer (51) deforms radially outward along the positive electrode (52). Along with this deformation of the polymer layer (51), the actuator (11) moves the lens holder (12) along the optical axis.
Abstract(Chinese):

提供了一种小型化的简单结构的聚焦装置，以及使用该聚焦装置的成像装置。 聚焦装置（10）包括致动器（11），保持透镜（13a）和（13b）的透镜保持器（12）和安装透镜保持器（12）的保持器支撑基座（14）。 致动器（11）包括聚合物层（51），形成在保持器支撑基座（14）上的正极（52）和形成在透镜保持器（12）上的负极（53）。 当正极（52）和负极（53）之间的施加电压升高时，聚合物层（51）沿着正极（52）径向向外变形。 随着聚合物层（51）的这种变形，致动器（11）沿着光轴移动透镜架（12）。

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