LENS POSITIONING SYSTEM

摘要

An actuator includes an inner element coupled to an outer element by a linear-motion bearing that provides a single degree of translational movement of the inner element with respect to the outer element along a longitudinal axis. The inner element includes a permanent magnet and the outer element includes a conductive winding with a first coil wound in first direction around a first pole of the permanent magnet and a second coil wound in a second direction around a second pole of the permanent magnet.

主权项

1. A positioning system comprising:
an actuator comprising:
an inner element comprising a permanent magnet with a first pole and a second pole that define a magnetic axis parallel to a longitudinal axis;an outer element comprising a first coil wound in a first direction around the first pole and a second coil wound in a second direction around the second pole, wherein the outer element is coupled to a body of a scanner; anda linear-motion bearing that couples the inner element to the outer element, the linear-motion bearing providing a single degree of translational movement of the inner element with respect to the outer element along the longitudinal axis; and a controller to induce a current through the first coil and second coil to move the inner element with respect to the outer element along the longitudinal axis.