| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an operation detection device that can accurately grasp a movement of an object of detection whatever shape and size the object of detection has without requiring complicated constitution nor processing, and properly detect its moving speed.SOLUTION: A control part 1 measures the time from when any of a plurality of light reception sensor detects an object of detection approaching first until when all the light reception sensors detect the object of detection. Then the control part detects the moving speed of the object of detection on the basis of the measured time.</p> |
