Actuator for an optical head

Details Actuator for an optical head Actuator for an optical head

1994-05-18

1996-04-30

Epps, Georgia Y.

Optical: systems and elements

Lens

With support

359814, 369 4414, 369 4417, G02B 702, G11B 700

Patent

active

055130470

ABSTRACT:
A focus drive coil is wound on an outer periphery of a lens holder, and two tracking drive coils are provided on the focus drive coil. Magnetic chips are preferably interposed between each of the two tracking drive coils. First to third magnets are provided on an actuator base. The first magnet faces the adjacent half portions of the two tracking drive coils, and the second and third magnets face the outer half portion of the two tracking drive coils. The lens holder is supported on the actuator base by using upper and lower parallel triangular plate springs.

REFERENCES:
patent: 4566089 (1986-01-01), Kime
patent: 4750164 (1988-06-01), Nose
patent: 5208703 (1993-05-01), Ikegame et al.
Patent Abstracts of Japan, vol. 11, No. 389 (P-648) 19 Dec. 1987 & JP-A-62 154 330 Jul. 9, 1987.
Patent Abstracts of Japan, vol. 10, No. 312 (P-509)(2368) 23 Oct. 1986 & JP-A-61 122 941 Jun. 10, 1986.

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