Lens actuator and optical disk apparatus

Details Lens actuator and optical disk apparatus Lens actuator and optical disk apparatus

1996-04-26

1998-09-29

Ben, Loha

Optical: systems and elements

Lens

With support

359822, 359821, 359813, 369 4418, G02B 702

Patent

active

058153284

ABSTRACT:
A lens actuator in an optical disk apparatus, wherein a rotation drive unit rotates a lens holder including a plurality of objective lenses which have different optical characteristics from each other, and which are disposed on a circumference whose center coincides with an axis of rotation of the lens holder to thereby switch the objective lenses and place an objective

REFERENCES:
patent: 3631775 (1972-01-01), Tidd
patent: 4321700 (1982-03-01), Russell
patent: 4544236 (1985-10-01), Endo
patent: 4591239 (1986-05-01), Nakamura
patent: 5128808 (1992-07-01), Dosaka
patent: 5132850 (1992-07-01), Hagiwara
Komma et al., "Dual focus optical head for 0.5mm and 1.2mm disks(1)" Association of Applied Physics 19P-S-4 1994.

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