Patent ID: 8482681
Filing Date: 2013-07-09
Classification: G03B

Abstract:
1. An image displacement module, adapted to a projector, the image displacement module comprising: a base; a carrier; an optical element, disposed on the carrier; a freely rotating shaft, disposed between the base and the carrier, wherein the carrier is capable of rotating on and moving along the freely rotating shaft relative to the base; a flexible shaft, disposed between the base and the carrier, wherein the freely rotating shaft and the flexible shaft are in a same axis, the flexible shaft is capable of applying a force on the carrier along the axis, and the carrier is capable of moving along the freely rotating shaft relative to the base to release the force; and at least one actuator, disposed between the base and the carrier, wherein the flexible shaft generates an elastic torsion when the actuator drives the carrier to rotate in the axis relative to the base, and the flexible shaft drives the carrier to reposition relative to the base when the actuator does not drive the carrier to rotate in the axis relative to the base.