Objective lens driving apparatus

Details Objective lens driving apparatus Objective lens driving apparatus

1995-10-30

1997-07-08

Ben, Loha

Optical: systems and elements

Lens

With support

359824, 369 4415, 369247, G02B 702

Patent

active

056467893

ABSTRACT:
An objective lens driving apparatus has a base provided with a plurality of focusing and permanent magnets and a supporting post being mounted on an upper surface thereof, a supporting shaft mounted on the upper surface of the base, a lens holder for holding an objective lens at an extension thereof, with the lens holder being rotatably and slidably fitted onto the supporting shaft at a position of the center of gravity of the lens holder and being provided with focusing coils and tracking coils (the lens holder is provided with one or more through holes being disposed at a side wall thereof). One or more elastic members are stretched between the supporting post of the base and the lens holder in a plane including Y axis line joining the supporting shaft and the objective lens and Z axis line being axis line of the supporting shaft. One or more damping members keep vibration of the lens holder from being transmitted to the elastic members, the damping members being inserted between the through holes and the elastic members, respectively.

REFERENCES:
patent: 5046820 (1991-09-01), Saekusa et al.
patent: 5072433 (1991-12-01), Tanaka
patent: 5264968 (1993-11-01), Masunaga
patent: 5323369 (1994-06-01), Kim

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