Tilt-type anti-shake compensation structure for auto-focus module

摘要

A tilt-type anti-shake compensation structure for auto-focus module includes an auto-focus module having a lens assembly held thereto and driving the latter to move forward and rearward in a light entering path, i.e. in z-axis direction, so as to focus a captured image; an outer frame enclosing the auto-focus module therein, and having an elastic supporting member provided therein to connect to and between upper ends of the outer frame and the auto-focus module; and a compensation driving unit arranged behind the auto-focus module for driving the auto-focus module to tilt leftward and rightward on x-axis, or forward and rearward on y-axis, within the outer frame, so as to compensate any image deviation due to shake caused by hands. The anti-shake structure is simple and can quickly compensate shake caused by hands.

主权项

1. A tilt-type anti-shake compensation structure for auto-focus module, comprising:
an auto-focus module having a lens assembly held thereto and driving the lens assembly to move forward upward and rearward downward in a light entering path, i.e. z-axis direction, so as to focus an image captured by the lens assembly; an outer frame enclosing the auto-focus module therein, and having an elastic supporting member provided therein to connect to and between an upper end of the outer frame and an upper end of the auto-focus module for suspending the auto-focus module in the outer frame, allowing the auto-focus module to tilt forward and rearward or leftward and rightward by fulcruming a center of the elastic supporting member; and a compensation driving unit being arranged behind the auto-focus module for driving the auto-focus module to tilt leftward and rightward on x-axis, or forward and rearward on y-axis, within the outer frame, so as to compensate any image deviation due to shake caused by hands, wherein the compensation driving unit includes: a compensation magnet assembly being arranged beneath an outer bottom face of the auto-focus module, and including at least one x-axis compensation magnet and at least one y-axis compensation magnet; a compensation winding assembly being arranged on an inner bottom face of the outer frame, and including at least one x-axis compensation winding and at least one y-axis compensation winding corresponding to the x-axis compensation magnet and the y-axis compensation magnet, respectively, for separately generating an electromagnetic field to drive the auto-focus module to tilt on x-axis or y-axis; and a displacement sensor assembly being arranged on a central area of the inner bottom face of the outer frame, and including a displacement sensor and a sensing magnet; the displacement sensor corresponding to the sensing magnet for detecting a volume of displacement in x-axis direction or y-axis direction, so that the auto-focus module can be driven to reach at a precise compensation position.