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Lens driving device

  • US 6,853,507 B2
  • Filed: 12/11/2003
  • Issued: 02/08/2005
  • Est. Priority Date: 07/09/2003
  • Status: Expired due to Fees
First Claim
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1. A lens driving device comprising:

  • a barrel unit having an internal space for containing a lens therein and a guide slot for allowing forward and backward movement of the lens through rotation of the barrel unit;

    a ring-shaped piezoelectric actuator unit arranged adjacent to the barrel unit for being contracted or expanded radially in response to an external input signal; and

    a drive member mounted on the piezoelectric actuator unit and having a plurality of segments projected toward the barrel unit to contact the same.

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