| 摘要 |
It is an object to provide a photoelectric sensor with excellent detection accuracy. A photoelectric sensor includes a light-emitting diode for generating detection light; a photodiode for receiving returned light induced by reflection of the detection light outside and returned thereto; a light projection/reception lens which is adapted to exit the detection light from the light-emitting diode to the outside, and further, is adapted such that the returned light from the outside enters there; a half mirror which is provided on an optical path between the light projection/reception lens and the light-emitting diode and the photodiode, and further, is adapted to separate the optical path of the detection light which proceeds toward the light projection/reception lens from the light-emitting diode, from the optical path of the returned light which proceeds toward the photodiode from the light projection/reception lens; and a light shielding member which is provided in such a way as to overlap the optical path of the detection light or the returned light at any position on the optical path between the light projection/reception lens and the light-emitting diode and the photodiode, and further, is adapted to partially intercept the detection light or the returned light. |
