| 摘要 |
<p>In order to provide an optical motion sensor which can detect the movement of a person easily and in an ensured fashion with a relatively simple circuit configuration in an environment where the brightness changes completely, a circuit configuration is provided in which a photodetector 15 and a voltage uniforming circuit 21 are connected in series, a connecting point between the photodetector 15 and the voltage uniforming circuit 21 is connected to a signal output terminal 39 via a differential amplifier circuit 31 and a pulse forming circuit 37, and the voltage uniforming circuit comprises a transistor whose emitter is grounded, a condenser which is inserted between a base and the emitter of the transistor and a resistance which is inserted between the base and a collector of the transistor, the collector of the transistor being connected to the photodetector.</p> |
