Optical pickup device having a magnetic circuit whose poles are

Details Optical pickup device having a magnetic circuit whose poles are Optical pickup device having a magnetic circuit whose poles are

1995-07-12

1997-09-02

Young, W. R.

Optical: systems and elements

Lens

With support

359824, 369 4416, G02B 704, G11B 7095

Patent

active

056638418

ABSTRACT:
A holder is suspended on a carriage, and a magnetic circuit is disposed adjacent to the holder. The magnetic circuit has a first magnetic pole and a second magnetic pole. A focus coil having a magnetic flux receiving portion is provided around a vertical axis of the holder. A tacking coil having a magnetic flux receiving portion is provided around a horizontal axis of the holder. Both the magnetic flux receiving portions are disposed so as not to be overlapped with each other, and disposed in parallel with one of the surface of the first and second magnetic poles. Both of the magnetic flux receiving portions are flush with each other.

REFERENCES:
patent: 4842392 (1989-06-01), Nakamura et al.
patent: 5222056 (1993-06-01), Tanaka

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