| 摘要 |
Disclosed are a dust prevention system and a laser processing apparatus including the same. The disclosed dust prevention system is placed on a path, through which a laser beam passes, in a laser processing apparatus to protect the laser beam from the outside. The dust prevention system comprises: a first cylinder in a shape of a body tube with a first penetrating hole inside through which the laser beam passes; and a second cylinder placed to be able to relatively move towards the first cylinder by having one of at least a part inserted into the first penetrating hole, which is in the shape of a body tube and has a second penetrating hole inside, connected to the first penetrating hole. |
