ACTUATOR FOR FREE-ANGLE ROTATION FOR OPTICAL IMAGE STABILIZATION (OIS) AND CONTROLLING METHOD THEREOF

An actuator (100) for driving a camera module (116), includes: a camera module (116) comprising at least a lens holder (106), the camera module (116) having magnets for driving and position detection (103a, 103b, 103c) provided on at least three sides of the four sides of the camera module (116); a drive holder (114) for holding the camera module (116), wherein the drive holder (114) has a bottom part including a generally spherical portion (310), and wherein one or more suction magnets (113) or one or more suction yokes (111) are attached to the bottom part; a base (110) having a receiving surface (320) with a shape corresponding to the generally spherical portion (310) of the bottom part of the drive holder (114), wherein the receiving surface (320) has one or more suction yokes (111) for attracting the suction magnets (113) or one or more suction magnets (113) for attracting the suction yokes (111), and wherein the receiving surface (320) and the generally spherical portion (310) of the bottom part of the drive holder (114) form a sliding mechanism that constrains movement of the camera module (116) to be three-axis rotation around a center (O) of a sphere of which the generally spherical portion (310) forms a part; at least three driving coils (118a, 118b, 118c) fixed with respect to the base (110), respectively paired with the magnets for driving and position detection (113a, 113b, 113c) provided on the at least three sides of the camera module (116), for driving the camera module (116) for three-axis rotation; and detection sensors (119) fixed with respect to the base (110), respectively arranged at locations facing the magnets for driving and position detection (113a, 113b, 113c) provided on the at least three sides of the camera module (116), for detecting positions of the respective magnets for driving and position detection (113a, 113b, 113c). Un actionneur (100) servant à entraîner un module de caméra (116) comprend : un module de caméra (116) comprenant au moins un support de lentille (106), le module de caméra (116) comportant des aimants pour entraînement et détection de position (103a, 103b, 103c) qui sont disposés sur au moins trois des quatre côtés du module de caméra (116) ; un support d'entraînement (114) servant à maintenir le module de caméra (116), le support d'entraînement (114) comportant une partie inférieure qui comprend une partie généralement sphérique (310), et un ou plusieurs aimants d'aspiration (113) ou une ou plusieurs cula