Optical pick-up objective driving apparatus

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

1992-01-30

1993-03-02

Ben, Loha

Optical: systems and elements

Lens

With support

369 4414, 359814, G02B 702

Patent

active

051914840

ABSTRACT:
An optical pick-up objective lens driving apparatus comprises a rectangular moving member mounted for movement relative to an iron-core member in rectilinear focusing and tracking directions, respectively. The moving member carries focusing and tracking coils, and a lens. Magnetic pieces are disposed at respective corners of the moving member in opposing spacial relationship to magnetic plates of the iron core member to create a restoring force which biases the moving member to a pre-set position. The lens is mounted over a center of weight of the moving member.

REFERENCES:
patent: 4790628 (1988-12-01), Nanno et al.
patent: 4863240 (1989-09-01), Nakajima et al.
patent: 4878214 (1989-10-01), Hinotani
patent: 4998802 (1991-03-01), Kasuga et al.
patent: 5018836 (1991-05-01), Noda et al.

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