Magnetic device for focusing an optical imaging system

Details Magnetic device for focusing an optical imaging system Magnetic device for focusing an optical imaging system

1997-05-23

1999-11-02

Epps, Georgia

Optical: systems and elements

Lens

With support

G02B 702

Patent

active

059781610

ABSTRACT:
A device for changing the position of an optical imaging system. In one preferred embodiment, a supporting ring surrounds the optical imaging system at least partially. At least one unit is provided which generates or is sensitive to a magnetic field. A casing element surrounds the supporting ring in a largely non-contacting manner, which provides a watertight enclosure of the supporting ring, inclusive of the optical imaging system. A controller surrounds the casing element, at least partially, and is provided with an equal number of units generating or sensitive to a magnetic field in a radial or axial direction relative to the unit in the supporting ring. The controller unit permits a non-contacting displacement of the supporting ring, inclusive of the optical imaging system, along the direction of its optical axis without any wear-inducing engaging operative mechanisms, by means of a magnetic force. In a second embodiment, the controller is a rod-shaped magnetic carrier.

REFERENCES:
patent: 5691842 (1997-11-01), Devenyi et al.

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