Objective lens supporting device for optical pickup

Details Objective lens supporting device for optical pickup Objective lens supporting device for optical pickup

1988-05-26

1989-10-31

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

350247, 350255, 369 45, G11B 708, G02B 702

Patent

active

048782149

ABSTRACT:
An objective lens supporting device for an optical pickup including an objective lens opposed to an optical disc, a lens holder for holding the objective lens, a plurality of supporting rods formed of elastic material and arranged in parallel to each other, the lens holder being operatively supported by the supporting rods, and a driving mechanism for driving the lens holder in both a direction of an optical axis of the objective lens and a direction along an information recorded surface of the optical disc. A pair of neck portions is formed at both end portions of each supporting rod. Each neck portion has a section such that a geometrical moment of inertia with respect to a first axis intersecting a primary axis and extending in the direction of the optical axis of the objective lens is equal to a geometrical moment of inertia with respect to a second axis intersecting the primary axis and extending in the direction along the information recorded surface of the optical disc.

REFERENCES:
patent: 4616355 (1986-10-01), Kasahara
patent: 4646283 (1987-02-01), Ito et al.
patent: 4766583 (1988-08-01), Oinoue et al.

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