In order to meet the demand of increasing efficacy for space camera

innovative application of a synchronous mechanism in driving two cameras is used

which is high synchronous

low power and driving by one step motor.Firstly

the special demand of mechanism motion is analyzed.Secondly the main parameters are analyzed and calculated

and the motor type is determined.Then

the detail design of cam curve is carried out.Finally

the kinematics analysis and detail design of mechanism are carried out

the development of shrink ratio principled prototype is accomplished.The result shows that the mechanism can meet the camera use requirement.