KEY FEATURES
The WL3500 is an automatic white light interferometry 3D profiler driven by a sub micron resolution XY Linear Motor stage. Designed on the basis of a solid granite tabletop gantry frame structure, it maximizes the stability of the interferometer, which is very sensitive to vibration, and measures the 3D structure and roughness of the 200mm / 300mm wafer surface precisely with the stable suction power of the variable vacuum chuck .