Electro-optical scanning device, hinge element for use in the sc

Details Electro-optical scanning device, hinge element for use in the sc Electro-optical scanning device, hinge element for use in the sc

1992-11-09

1998-03-10

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4416, G11B 2120, G11B 709

Patent

active

057269688

ABSTRACT:
An electro-optical scanning device comprises a lens (2) having an optical axis (2a), which lens is movable in a focusing direction (F), related to the optical axis, to form at least one radiation spot on a surface to be scanned, and in a tracking direction (T), oriented transversely of the focusing direction, to follow a recording track. The scanning device comprises a stationary section (16) having first actuator means and a movable section (6) having second actuator means, which movable section is movable relative the stationary section and carries said lens, which actuator means cooperate electromagnetically with one another via an air gap (20) in order to drive the lens. The movable section is secured to the stationary section by elastically deformable suspension means. The suspension means comprise two frame-shaped hinge elements (22) which extend parallel to one another and which are oriented transversely of a plane defined by the focusing direction and the tracking direction, which hinge elements each comprise two plastics fixing members (27a, 27b) and two elongate metal supporting members (25) extending between and embedded in the fixing members.

REFERENCES:
patent: 4669823 (1987-06-01), Iguma et al.
patent: 4927235 (1990-05-01), Narumi
patent: 5056891 (1991-10-01), Masunaga
patent: 5073882 (1991-12-01), Sasaki
patent: 5199014 (1993-03-01), Homburg et al.

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