| 摘要 |
An electronic device includes a shell, a circuit board, a triggering element, a light-transmissive button and an optical sensor. The shell defines a button hole in an edge thereof and forms a receiving space therein. The circuit board module is installed in the receiving space. The triggering element is fixed on and electronically connected with the circuit board module. The light-transmissive button is received in the button hole, and is depressible for turning on and off the triggering element. The optical sensor is positioned beneath the light-transmissive button for detecting intensity of the ambient light passing through the light-transmissive button. The appearance of the electronic device is not affected by the optical sensor.
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