| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multiple optic-axial photoelectric sensor which can reduce power consumption while maintaining operability when an optical axis is adjusted. <P>SOLUTION: In the multiple optic-axial photoelectric sensor, a projector 1 including a plurality of light projection elements T1 to T12, and a light receiver 2 including a plurality of light receiving elements J1 to J12 are oppositely arranged. When the light projection elements T1 to T12 are allowed to sequentially project light, a light incident state and a shielding state of the light receiving elements J1 to J12 making pairs with the light projection elements are detected, and signals corresponding to detection results are outputted. A display unit 4 arranged in the projector 2 is lit according to the light incident state or the shielding state of the light receiving states of the respective light receiving elements J1 to J12. A lighting mode of the display unit 4 is selectively switched to a usual lighting mode for usual lighting and a power saving lighting mode for making luminance to be lower than the usual lighting mode according to the light receiving states of the light receiving elements J1 to J12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
