Photoelectric sensor light shield

The invention discloses a light shield of a photoelectric sensor. The light shield comprises a shield body; the six light blocking rings are all in a square circular plane shape, are sequentially arranged in the cover body from the inlet to the outlet, and are respectively a first light blocking ring, a second light blocking ring, a third light blocking ring, a fourth light blocking ring, a fifth light blocking ring and a sixth light blocking ring; the inner side edges of the six light blocking rings are provided with chamfers, inclined planes are formed on the inner sides of the light blocking rings, and cutting edges are formed at the edges; the inclined surfaces of the first light blocking ring, the second light blocking ring, the third light blocking ring and the fourth light blocking ring all face the inlet of the cover body; the inclined faces of the fifth light blocking ring and the sixth light blocking ring both face the outlet of the cover body. The cutting edges of the six light blocking rings are p