Separation type optical pickup device

Details Separation type optical pickup device Separation type optical pickup device

1991-05-20

1992-12-15

Weinhardt, Robert

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4417, 369112, G11B 712

Patent

active

051723565

ABSTRACT:
A separation type optical pickup device divided to a fixed optical unit and a movable optical unit. The device comprises an optical output system for emitting an optical beam arranged in the fixed unit. An optical detection system is arranged in the fixed unit. A focusing system is arranged in the movable unit for forming an optical spot on an information record medium. A deflection member is arranged in the fixed unit for deflecting and guiding the beam emitted from the optical output system to the movable unit. The member has a deflection surface which is universally rotatable about a deflection point thereof. An optical axis adjuster mechanism is arranged in the fixed unit for shifting and adjusting the optical output system in a direction perpendicular to an optical axis thereof.

REFERENCES:
patent: 4507766 (1985-03-01), Saimi et al.
patent: 4621351 (1986-11-01), Baer et al.
patent: 4688201 (1987-08-01), Towner et al.
patent: 4959824 (1990-09-01), Ueda et al.
patent: 4977552 (1990-12-01), Gotoh

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