ACTUATOR ASSEMBLY AND OPTO-MECHANICAL DEVICE COMPRISING AN ACTUATOR ASSEMBLY

摘要

An actuator assembly (100,200,300,400,500) comprises a first part (2), and a second part (3), which comprises a guide (5,6,58,59) for guiding motion of the first part (2) relative to the second part (3). The actuator assembly (100,200,300,400,500) further comprises an electro -mechanical unit (11,17,47,57) for generating a driving force between the first part (2) and the second part (3) along the guide (5,6,58,59) in response to a driving signal, and at least one pair of permanent magnets (20,21,30,31,40,50) attached to one of the first and second parts, and which comprises a first magnetized zone (12,41,51) and a second magnetized zone (13,42,52), which are positioned in a line, for providing a force transverse to the guide (5,6,58,59), acting to hold at least one surface part of the first part (2) against a surface of the guide (5,6,58,59). The respective components of magnetization of the first and the second magnetized zone (12,13,41,42,51,52) of the at least one pair of permanent magnets (20,21,30,31,40,50) parallel to the line are oriented in opposite directions.