| 摘要 |
<p>In order to provide an optical motion sensor that can easily and effectively detect the movement of people in widely differing brightness conditions with a relatively simple circuit configuration, a light-receiving element (15) and a voltage equalization circuit (21) are connected in series, and the connection point between the light-receiving element (15) and the voltage equalization circuit (21) is connected to a signal output terminal (39) via a differential amplifier circuit (31) and a pulse-forming circuit (37) to constitute the circuit. The voltage equalization circuit comprises an emitter earth transistor, a capacitor that is inserted between the base and emitter of this transistor, and a resistor inserted between the base and collector of this transistor, and the collector of the transistor is connected to the light-receiving element.</p> |
