| 摘要 |
<p>A detecting device includes at least one transmitter and plural receivers. After the at least one transmitter emits plural incident light beams to a detection zone, plural reflected light beams reflected from the detection zone are received by the plural receivers. If no object is moved within the detection zone, the plural reflected light beams strike a first part of the plural receivers, so that the plural receivers are in an initial reception configuration. If an object is moved within the detection zone, the plural reflected light beams are disturbed by the object and deflected to a second part of the plural receivers, so that the plural receivers are in a disturbed reception configuration. According to the reception configuration change, a moving direction of the object within the detection zone is determined. Consequently, the detecting range is largely enhanced, and the cost is reduced.</p> |
