Image blur prevention apparatus

Details Image blur prevention apparatus Image blur prevention apparatus

1997-07-09

1998-11-10

Perkey, W. B.

Photography

Camera shake sensing

Having stabilization system

359554, G03B 1700, G02B 2764

Patent

active

058357998

ABSTRACT:
An image blur prevention apparatus includes a drive device which generates an electromagnetic force by using permanent magnets and coils, and uses the electromagnetic force to drive a movable member, e.g., a correction lens, for performing an image blur. The permanent magnets are mounted on the movable member, and the coils are mounted on the apparatus body. The permanent magnet opposes one side of the coil and forms a magnetic path on the opposite side of the coil to the side wherein the coil opposes the permanent magnet without using any magnetic member. With this structure, the necessity for wiring for the movable member is eliminated to simplify the assembly process. In addition, since no magnetic member is placed on the opposite side of the coil to the side where the coil opposes the permanent magnet, a simple structure can be realized.

REFERENCES:
patent: 4869108 (1989-09-01), Washisu
patent: 4965619 (1990-10-01), Shikaumi et al.
patent: 5020369 (1991-06-01), Washisu et al.
patent: 5266988 (1993-11-01), Washisu
patent: 5608703 (1997-03-01), Washisu
patent: 5689369 (1997-11-01), Noguchi

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