| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent erroneous detection of a burst wave from an external light source even when the external light source such as an inverter fluorescent lamp exists. SOLUTION: This object detection sensor is provided with a light-emitting element 100 for outputting the burst wave B1 in a predetermined wavelength, a light-emitting side control part 300 for controlling a timing of output of the light-emitting element 100, a light-receiving element 200 for receiving the burst wave, and a light-receiving side control part 400 for taking in a light-receiving signal 230 from the light-receiving element 200. When an object exists in a detection area wherein an light-emitting area of a light outputted from the light-emitting element 100 and a light receiving area of the light-receiving element 200 are overlapped, the light-receiving element 200 receives the burst wave B1 reflected by the object and takes in the light-receiving signal 230 in order to conduct external output 410. When it is determined that the light- receiving element 200 receives the burst wave B1 for a longer time than a burst wave B2 in a predetermined wavelength contained in the fluorescent lamp K, the receiving side control part 400 conducts the external output 410 with respect to an external circuit 500.</p> |
