概要（Overview）

The Ultratech Saturn Spectrum 3 is a stepper and scanner system utilized in the production of semiconductor devices. It is capable of manufacturing wafers in sizes ranging from 4 to 8 inches. Ultratech also offers an updated version of this system, the Saturn Spectrum 3e, which incorporates an enhanced machine vision system (MVS) that includes the PatMAX architecture. The Saturn Spectrum 3e also boasts improved illumination, with a wafer plane irradiance of 1900 mW/cm2, resulting in shorter exposure times.