Abstract: An optical element driving mechanism includes a movable assembly, a fixed assembly, and a driving assembly. The movable assembly is configured to be connected to an optical element. The movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly in a range of motion. The optical element driving mechanism further includes a positioning assembly configured to position the movable assembly at a predetermined position relative to the fixed assembly when the driving assembly is not operating.

Abstract: A passive radiator comprises a frame body having an opening; a diaphragm disposed on the frame body and located corresponding to the opening; and a surround which joins with an outer margin of the diaphragm; wherein the diaphragm is extended from a radial position to a center position to form a recess cavity, and the recess cavity has a replaceable weighting unit disposed therein. The passive radiator can improve bass tone performance for audio products.

Abstract: Disclosed is a guiding module and method of using the same. The guiding module includes an access unit, a memory unit, a controller and a projection unit. The access unit is used for receiving the guiding information which stores in an electronic product with guiding function. The memory unit is used for storing the guiding information which is sent by the electronic product. The controller is used for processing the guiding information and sending it. The projection unit is used for receiving the guiding information which is sent out by the controller and projecting it. The guiding module utilizes the projection unit for projecting the guiding information of the electronic product so as to magnify the projection picture, therefore, the driver can clearly identify the guiding information.