Objective lens driving apparatus for optical pickup

Details Objective lens driving apparatus for optical pickup Objective lens driving apparatus for optical pickup

1992-04-07

1994-02-08

Sniezek, Andrew L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4415, 359814, G11B 700

Patent

active

052854345

ABSTRACT:
An objective lens driving apparatus includes a lens holder holding an objective lens, a focusing coil wound around the vertical outer periphery of the lens holder, yoke members each constituted by an inner yoke and an outer yoke, permanent magnets each retained on the outer yoke to oppose the focusing coils, and tracking coil fixed to the focusing coil. Each tracking coil is twice bent at right angles to wrap around the front, rear and one side of the inner yoke. Electromagnetic forces generated from each upper and lower parts of the tracking coil when the lens holder moves in the horizontal direction, and capable of causing the rolling of the lens holder, offset each other, so that the position of the lens holder is controlled without its axis being inclined and the driving range of the lens holder is wide.

REFERENCES:
patent: 4818066 (1989-04-01), Nose
patent: 4878214 (1989-10-01), Hinotani
patent: 5046821 (1991-09-01), Seino
patent: 5056891 (1991-10-01), Masunago
patent: 5128806 (1992-07-01), Ohno

Affiliated with

Also associated with

Rating

Objective lens driving apparatus for optical pickup does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Objective lens driving apparatus for optical pickup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Objective lens driving apparatus for optical pickup will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-703319