Zoom device for imaging lens module has spring(s) that applies force to lens holder cam drivers, stationary cylinder for holding rotatable cylinder with guide slot, pin on rotatable cylinder that passes through guide slot

摘要

The zoom device has first and second lens holders (120,150) with first and second cam drivers (122,152), a rotatable cylinder (140), at least one spring (130) that applies force to the cam drivers, a guide arrangement for the lens holders, a stationary cylinder (110) for holding the rotatable cylinder and with a guide slot and a pin (141) on the rotatable cylinder that passes through the guide slot.