Patent ID: 6891600

Claim:
A lithographic projection apparatus comprising: a radiation system to provide a beam of radiation; a support structure to support patterning structure that patterns the beam of radiation according to a desired pattern; a substrate table to hold a substrate; a projection system to project the patterned beam onto a target portion of the substrate; and a positioning device to position at least one of said support structure and said substrate table, the positioning device including a planar motor having a stator and a translator, one of the stator and the translator comprising a periodic magnet structure and another of the stator and the translator comprising a plurality of coils that are adapted to carry an electric current, the coils comprising a strip of electrically conducting sheet-material, wherein the strip of electrically conducting sheet material is wound about a winding axis to form the coil for carrying said electric current, and wherein said planar motor comprises an impact protection member attached to a side of the coils that forms a plane perpendicular to the winding axis and configured to prevent damages to the coils caused by one of said stator and translator.