An actuating device arranged for positioning a moveable member for orientating a mirror in a steering mirror unit for laser communication, wherein the actuating device comprises: a magnetically conductive base member arranged opposite the moveable member with a gap provided therebetween, wherein the moveable member is pivotally arranged with respect to the base member , the moveable member and the base member being magnetically conductive such as to allow one or more magnetic closed flux paths; at least one first magnet configured for providing a first magnetic flux through the base member and the moveable member such as to provide at least two first magnetic closed flux paths ; and at least one second magnet configured for providing a second magnetic flux through the base member and the moveable member such as to provide at least one second magnetic closed flux path, the at least one second magnet being an electromagnet; and wherein the at least one second magnet is configured for receiving a controllable second magnet actuation signal for controlling the second magnetic flux for changing, in one or more of the at least two first magnetic closed flux paths, a resulting magnetic flux provided by the first magnetic flux and the second magnetic flux for pivoting the moveable member , wherein the moveable member is pivotally suspended opposite the base member by means of a flexural pivot member which is arranged to provide one or more unconstrained degrees of freedom for the moveable member and one or more constrained degrees of freedom for the moveable member , wherein the one or more unconstrained degrees of freedom include at least one rotational degree of freedom, and the one or more constrained degrees of freedom include at least a translational degree of freedom in a longitudinal direction of the flexural pivot member, the flexural pivot member being a bending member. a magnetically conductive base member arranged opposite the moveable member with a gap provided therebetween, wherein the moveable member is pivotally arranged with respect to the base member , the moveable member and the base member being magnetically conductive such as to allow one or more magnetic closed flux paths; at least one first magnet configured for providing a first magnetic flux through the base member and the moveable member such as to provide at least two first magnetic closed flux paths ; and at least one second magnet configured for providing a second magnetic flux through the base member and the moveable member such as to provide at least one second magnetic closed flux path, the at least one second magnet being an electromagnet; and wherein the at least one second magnet is configured for receiving a controllable second magnet actuation signal for controlling the second magnetic flux for changing, in one or more of the at least two first magnetic closed flux paths, a resulting magnetic flux provided by the first magnetic flux and the second magnetic flux for pivoting the moveable member , wherein the moveable member is pivotally suspended opposite the base member by means of a flexural pivot member which is arranged to provide one or more unconstrained degrees of freedom for the moveable member and one or more constrained degrees of freedom for the moveable member , wherein the one or more unconstrained degrees of freedom include at least one rotational degree of freedom, and the one or more constrained degrees of freedom include at least a translational degree of freedom in a longitudinal direction of the flexural pivot member, the flexural pivot member being a bending member. <EOS>