Supporting mechanism for allowing an object to make a pseudo-tra

Details Supporting mechanism for allowing an object to make a pseudo-tra Supporting mechanism for allowing an object to make a pseudo-tra

1995-12-27

1997-11-11

Ben, Loha

Optical: systems and elements

Lens

With support

359814, 359819, 359811, 369 4415, 369244, G02B 702

Patent

active

056870337

ABSTRACT:
An objective-lens driving device has a supporting mechanism for supporting a magnetic circuit so as to allow it to freely make a pseudo-translational motion in the focusing direction. The supporting mechanism is provided with two hinges that are placed in such directions as to make a right angle with each other. The hinges are fixed onto the same plane of a base member at respective ends thereof that are farther from each other, and they are also fixed to the magnetic circuit at respective ends thereof that are closer to each other. Moreover, each hinge has flexible sections that are formed in at least two locations of each hinge with predetermined intervals from the magnetic circuit so that they are in parallel with each other. These flexible sections are formed in such a manner that they make a right angle with each other on the two hinges. This supporting mechanism, which has the hinges that are placed on the same plane, makes it possible to reduce a space taken in the focusing direction to a great degree. Therefore, it becomes possible to make the objective-lens driving device more compact and thinner. Furthermore, it is possible to easily manufacture the objective-lens driving device.

REFERENCES:
patent: 4720088 (1988-01-01), Tamura
patent: 4913527 (1990-04-01), Jessop
patent: 5130854 (1992-07-01), Suzuki
patent: 5220459 (1993-06-01), Ichikawa et al.
patent: 5453881 (1995-09-01), Suzuki

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