Compact optical pickup

Details Compact optical pickup Compact optical pickup

1992-11-12

1994-06-21

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4416, 359824, G11B 7095

Patent

active

053233786

ABSTRACT:
A compact optical pickup in which the optical elements are mounted on an optic holder driven as a unitary structure. The pickup includes the optic holder having a vertical hole at one end through which a laser beam passes, a horizontal opening which communicates with the vertical hole, an objective lens installed at the top of the vertical hole, a reflection mirror at the juncture of the vertical hole and horizontal opening, and a hybrid optical unit consisting of optical elements positioned at the other end of the optic holder to scan the reflection mirror with the laser beam via the horizontal opening and detect the laser beam reflected from the disk. The pickup further includes a support for suspending the optic holder from a base, simultaneously keeping balance between the objective lens at the one end of the optic holder and the hybrid optical unit at the other, and elastically supporting the optic holder, and a driver for driving the optic holder vertically and horizontally. The objective lens, the laser diode and the photodiode are integrally mounted on the optic holder, so that their optical axes never skew and are always coincident with each other.

REFERENCES:
patent: 4766583 (1988-08-01), Oinoue et al.
patent: 4794580 (1988-12-01), Ikedo et al.
patent: 4927235 (1990-05-01), Narumi
patent: 5001694 (1991-03-01), Lee et al.
patent: 5072433 (1991-12-01), Tamaka
patent: 5109368 (1992-04-01), Ohta et al.

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