Abstract: A button is applied to an electronic apparatus with a circuit board. The button includes a function part, at least a status switching part, a flexible member and a pressing part. The function part is disposed on the circuit board, and the status switching part is disposed on the circuit board. The pressing part is connected to the flexible member. When the user presses the pressing part by applying an external force, the function part makes electrical contact with the circuit board to activate a specific function. If the external force is increased, the status switching part will make electrical contact with the circuit board to activate another specific function.

Abstract: A focusing and defocusing mechanism incorporated in a digital camera lens for simplifying the lens structure. The mechanism includes an outer lens barrel, a cam barrel having a slot of multiple slopes for adapting to the outer lens barrel, a guide pin affixed onto the outer wall of the outer lens barrel for rotating into the slot of the multiple slopes, and controlling elements affixed to the guide pin for controlling the distance and movement of the guide pin on the slot of multiple slopes.