Patent ID: 8213783
Filing Date: 2012-07-03
Classification: G02B,G03B

Abstract:
1. An anti-shake device, provided in an optical system defining an optical path, the anti-shake device comprising: a biaxial rotating element provided in the optical path and configured to be pivoted at least about a first axis and a second axis to a limited extent, the biaxial rotating element being a thin resilient plate comprising: an inner plate portion having a flat surface facing the optical path, the flat surface defining the first axis and the second axis; a middle frame portion surrounding the inner plate portion, there being at least a first through groove provided between the middle frame portion and the inner plate portion and encircling the inner plate portion, there being two first connecting portions provided between the middle frame portion and the inner plate portion and aligned along the first axis, the inner plate portion being connected to the middle frame portion by the two first connecting portions; and an outer frame portion surrounding the middle frame portion, there being at least a second through groove provided between the outer frame portion and the middle frame portion and encircling the middle frame portion, there being two second connecting portions provided between the outer frame portion and the middle frame portion and aligned along the second axis, the middle frame portion being connected to the outer frame portion by the two second connecting portions; a driving module connected to the biaxial rotating element so as to drive the biaxial rotating element to pivot about the first axis and the second axis to the limited extent, wherein the driving module is configured to drive the inner plate portion to pivot about the first axis and the second axis with respect to the outer frame portion; and wherein the driving module is an electromagnetic driving module and comprises: