Magnetically coupled lens actuator

Details Magnetically coupled lens actuator Magnetically coupled lens actuator

H - Electricity

02

K

128/2, 310/33, 3

H02K 7/20 (2006.01) G02B 7/08 (2006.01) H02K 41/02 (2006.01)

Patent

CA 2040736

ABSTRACT A lens surrounded by a sealed protective chamber is focused by utilising a magnetically coupled actuator associated with the lens to adjust the position of the lens within the chamber. By using a magnetic field to adjust the lens position, it is not necessary to employ mechanical actuation means which have to pass through the walls of the chamber. The chamber is thereby completely sealed and contaminants are prevented from contacting the lens.

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