Patent ID: 7035019
Filing Date: 2006-04-25
Classification: G02B,G03B,H04N

Abstract:
1. An extending and retracting mechanism of a lens barrel, for extending an optical photography system out of an electronic device and retracting the optical photography system therein, comprising: a fixing barrel, comprising a first cam groove and a second cam groove formed on an inner circumference thereof; a rotary barrel, comprising a first cam-follower formed on an outer circumference thereof and engaged with the first cam groove of the fixing barrel, rotating about a central axis parallel to an optical axis of the optical photography system; a guiding barrel, comprising a second cam-follower formed on an outer circumference thereof and engaged with the second cam grooves of the fixing barrel, rotatably supporting a portion of the optical photography system with respect to the rotary barrel; and a driving mechanism, turning the rotary barrel such that the guiding barrel rotates about the central axis and moves along the central axis.