| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-axis photoelectric switch which can easily conduct optical axis adjustment without incurring cost increase. SOLUTION: According to the multi-axis photoelectric switch, all light- receiving devices are divided into 4 groups 41-44 of light-receiving devices to provide display parts 31-34 corresponding thereto, whereby the number of display parts for optical axis adjustment can be decreased compared with the conventional switch equipped with a display lamp for optical axis adjustment at every light-receiving device. In addition, there is no need to separately provide a laser beam source or the like, like that equipped with a laser pointer, and so production cost can be reduced compared with these conventional switches. The optical axis adjustment is conducted so as to increase the number of display parts lighted among the first to fourth display parts 31 to 34, whereby the optical axis can be brought close to the normal set position stepwise, and the optical axis adjustment can be easily conducted compared with the conventional switches by which the optical axis adjustment of all the light-receiving devices must be conducted at a time. |
