Optical system driving apparatus

Details Optical system driving apparatus Optical system driving apparatus

1996-03-29

1997-09-02

Ben, Loha

Optical: systems and elements

Lens

With support

359814, 369 4415, 369247, G02B 702

Patent

active

056638434

ABSTRACT:
An optical system driving apparatus including a holder 2 supporting an objective lens 1, resilient supporting members 29a, 29b for supporting the holder movably in a focusing direction Z perpendicular to a record medium, and focusing coils 4a, 4b secured to the holder 2 by means of viscoelastic members 3a and 3b. The focusing coils 4a, 4b and a viscoelastic members 3a, 3b serve as a dynamic damper so that undesired resonance can be effectively suppressed without narrowing a control frequency range.

REFERENCES:
patent: 4592037 (1986-05-01), Ohmuki
patent: 4613202 (1986-09-01), Kuriyama
patent: 4794580 (1988-12-01), Ikedo et al.
patent: 5206762 (1993-04-01), Kasahara et al.

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