Viscoelastic substance and objective lens driving apparatus with

Details Viscoelastic substance and objective lens driving apparatus with Viscoelastic substance and objective lens driving apparatus with

1989-11-29

1993-04-27

Arnold, Bruce Y.

Optical: systems and elements

Lens

With support

359824, 369 4415, G02B 702, G11B 700

Patent

active

052067629

ABSTRACT:
An objective lens driving apparatus includes an objective lens held by a movable member. The movable member is supported on a base by a support mechanism to be movable in a predetermined direction. Magnetic field forming unit is fixed to the base so as to apply a magnetic field to the movable member. Focusing coils and tracking coils are fixed to the movable member to drive the movable member in the predetermined direction in cooperation with the magnetic field. Viscoelastic substances for absorbing vibration of the movable member are arranged between the focusing coils and the magnetic unit and between the tracking coils and the unit. The viscoelastic substance has a viscoelastic material and magnetic material dispersed therein.

REFERENCES:
patent: 4419614 (1983-12-01), Kimura
patent: 4479051 (1984-10-01), Musha
patent: 4592037 (1986-05-01), Ohnuki
patent: 4600323 (1986-07-01), Harada et al.
patent: 4613202 (1986-09-01), Kuriyama
patent: 4620933 (1986-11-01), Ochiai et al.
patent: 4673997 (1987-06-01), Gowda et al.
patent: 4689163 (1987-08-01), Yamashita et al.
patent: 4766583 (1988-08-01), Oinoue et al.
patent: 4773062 (1988-09-01), Wada et al.
patent: 4878214 (1989-10-01), Hinotani
patent: 4948230 (1990-08-01), Kasahara et al.
Soviet Inventions Illustrated, Sections P, Q, week 8643, Dec. 3, 1986, Derwent Publications Ltd., London, Q 49 SU 1216-327 (Oil Gas Res Inst).

Affiliated with

Also associated with

Rating

Viscoelastic substance and objective lens driving apparatus with does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2332261