Stiffness compensation in opto-mechanical mechanisms

G - Physics – 12 – B

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G12B 3/00 (2006.01) F16C 11/12 (2006.01) F16C 27/00 (2006.01) G01B 9/02 (2006.01) G02B 7/00 (2006.01) G12B 5/00 (2006.01)

Patent

CA 2711801

An optical scanning or positioning mechanism has a head on which optical components are mounted and an actuator coupled to the head to cause the head to move when the actuator is actuated. There are one or more sets of flexure bearings mounted in the mechanism. The flexure bearings have a restoring torque when moved from a rest position. The bearings are coupled to the head to allow the head to move when actuated by the actuator. One or more magnets are mounted in the mechanism in a location other than in the actuator to compensate for the flexure bearings restoring torque.

Selon l'invention, un mécanisme de positionnement ou de balayage optique comporte une tête sur laquelle sont montés des composants optiques, et un actionneur couplé à la tête afin de faire se déplacer la tête lorsque l'actionneur est actionné. Il y a un ou plusieurs ensembles de paliers flexibles montés dans le mécanisme. Les paliers flexibles ont un couple de rétablissement lorsqu'ils sont déplacés à partir d'une position de repos. Les paliers sont couplés à la tête afin de permettre à la tête de se déplacer lorsqu'elle est actionnée par l'actionneur. Un ou plusieurs aimants sont montés dans le mécanisme en un emplacement autre que dans l'actionneur afin de compenser le couple de rétablissement des paliers flexibles.

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