Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specified detail of transducer assembly support structure
Patent
1988-06-15
1989-11-21
Stephan, Steven L.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specified detail of transducer assembly support structure
350247, 350255, 369 45, G11B 310, G11B 332, G02B 704
Patent
active
048827231
ABSTRACT:
The invention relates to a device for directing a radiation beam towards a recording surface of a rotating disc for recording and/or scanning a recording track without mechanical contact. The device comprises a frame (101), an objective holder (103) having an objective (19) with an optical axis (17), two elongate leaf springs (113, 115) which are arranged one above the other for movably supporting the objective holder relative to the frame, and an electromagnetic actuator (121A; 121B1, 121B2) for the controlled movement of the objective. One (113) of the leaf springs is elastically extensible in its longitudinal direction (113B) to allow pivotal movements of the objective about a pivotal axis 125 which extends transversely of a plane containing the optical axis and intersecting the leaf springs. (FIG. 5)
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patent: 4679185 (1987-07-01), van Sluys
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patent: 4773055 (1988-09-01), Gijzen et al.
Stephan Steven L.
U.S. Philips Corporation
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