Lens driving apparatus and optical pickup unit having the same

Details Lens driving apparatus and optical pickup unit having the same Lens driving apparatus and optical pickup unit having the same

2007-03-08

2008-11-25

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With viewed object or viewed field illumination

C359S823000, C359S824000

Reexamination Certificate

active

07457055

ABSTRACT:
A lens driving apparatus includes a first lens-barrel having a lens built thereinto; a second lens-barrel; an electromechanical conversion element that applies a driving force f1 to the first lens-barrel and a driving force f2 to the second lens-barrel; and a housing that supports the lateral surfaces of the first lens-barrel and the second lens-barrel such that a lens-barrel body is mounted slidably on the housing in the light axis direction of the lens, the lens barrel body being the first lens-barrel and the second lens-barrel connected via the electromechanical conversion element therebetween, wherein the electromechanical conversion element generates deformation which results in displacement in the light axis direction of the lens by applying a drive voltage.

REFERENCES:
patent: 6188530 (2001-02-01), Katsuragi
patent: 6618212 (2003-09-01), Chikami et al.
patent: 2633066 (1997-04-01), None
patent: 2003-257069 (2003-09-01), None

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