Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1994-08-04
1995-11-14
Young, W. R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
359814, 359824, G11B 709
Patent
active
054673283
ABSTRACT:
A lens drive mechanism for an optical disc player includes a movable unit including an objective lens for focusing a coherent beam of light on an optical disc, a lens holder carrying the objective lens, focusing and tracking coils secured to opposite portions of a periphery of the lens holder. The lens drive mechanism also includes permanent magnets and yokes, and a plurality of support members connected at one end to the periphery of the lens holder and at the opposite end to a support fixture for supporting the movable unit for movement in focusing and tracking directions substantially perpendicular to each other. A upper set of the support members has a spring constant different from that of a lower set of the support members, and the product of the spring constant of the upper set of the support members multiplied by a distance from the center of gravity of the movable unit to a position of securement of the upper set of the support members is chosen to be equal to the product of the spring constant of the lower set of the support members multiplied by a distance from the center of gravity of the movable unit to a position of securement of the lower set of the support members.
REFERENCES:
patent: 5126983 (1992-06-01), Ikegame et al.
Aizawa Hisashi
Hayashi Takao
Matsubara Akira
Murakami Yutaka
Nakamura Toru
Matsushita Electric - Industrial Co., Ltd.
Young W. R.
LandOfFree
Lens drive mechanism for optical disc player with parallel suppo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lens drive mechanism for optical disc player with parallel suppo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens drive mechanism for optical disc player with parallel suppo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1226056