SHAFTLESS ANTI-SHAKE REFLECTION MODULE AND PERISCOPE MODULE

摘要

A shaftless anti-shake reflection module and a periscope module. The shaftless anti-shake reflection module comprises a fixed base (1), a movable base (2), a reflection mirror/prism (3), and an electromagnetic driving mechanism. The reflection mirror/prism (3) is mounted on the movable base (2). The movable base (2) is connected to the fixed base (1) by means of an elastic piece group, such that the movable base (2) is suspended in the fixed base (1). The electromagnetic driving mechanism comprises an electromagnetic coil (5) provided on the fixed base (1) and a permanent magnet (4) provided on the movable base (2). When the electromagnetic coil (5) is energized, a magnetic field resultant force is formed between the permanent magnet (4) and the electromagnetic coil (5) to drive the movable base (2) to tilt the reflection mirror/prism (3). The elastic piece group forms a rebound resultant force, and the magnetic field resultant force and the rebound resultant force together cause the movable base (2) to drive the reflection mirror/prism (3) to remain at an inclined position as required for an anti-shake function. During an anti-shake process, no friction is generated between the movable base (2) and the fixed base (1) in the shaftless anti-shake reflection module, such that a driving force loss difference is small.