Bi-directional autofocus actuator fit for 16-megapixel smartphone cameras

April 25, 2016 // By Julien Happich
Alps Electric has developed the “ATMJ1Z95 Series” bi-directional autofocus actuator for integration into 16-megapixel smartphone camera modules.

The ATMJ1Z95 Series supports large lenses with a diameter of 6.9mm, it measures 9×9×2.8mm, boasting a slim profile. The new series sets the initial position of the lens at a frequently used focal distance (position) and adjusts focus by moving the lens from that point in one direction or the other (bi-directionally) depending on whether the current is positive or negative. Compared to preload type actuators, this shortens the distance the lens has to travel, thereby reducing the amount of power required to move the lens to around one third and enabling high-speed focusing.

Furthermore, original mold design and automated machine design technologies have been applied to put in place a high-quality production system with extremely low variance, achieving high mechanical precision, with a tilt of less than one tenth of a degree during lens drive.


Visit Alps Electric at