Optical pick-up driving apparatus

Details Optical pick-up driving apparatus Optical pick-up driving apparatus

1997-11-10

1999-02-09

Cao, Allen T.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

G11B 1700

Patent

active

058703730

ABSTRACT:
An improved optical pick-up apparatus capable of simplifying the construction of a tracking coil and a focussing coil and more easily assembling the system by providing fine-patterned tracking coil and focussing coil, which generate a driving force so as to drive an objective lens, which includes an objective lens for condensing a light; an objective lens holder for supporting the objective lens; a yoke engaged to the objective lens holder and having a permanent magnet; and a fine-patterned coil provided with a tracking fine-patterned portion and a focusing fine-patterned portion, engaged to the objective lens holder, and constituting a magnetic circuit with the permanent magnet.

REFERENCES:
patent: 4759005 (1988-07-01), Kasahara
patent: 4998802 (1991-03-01), Kasuga et al.
patent: 5408451 (1995-04-01), Noda et al.
patent: 5442606 (1995-08-01), McCaslin et al.
patent: 5513047 (1996-04-01), Matsui
patent: 5541898 (1996-07-01), Kasuga et al.

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