Patent ID: 7242456

Claim:
A system, comprising: a first module including a set of pattern generating devices; a second module including a set of magnification changing devices having different magnifications, each of the magnification changing devices being aligned with a corresponding one of the pattern generating devices based on a correlation between a characteristic of the pattern generating devices and the magnification of the magnification changing devices; a third module including a set of illuminating devices; a fourth module including a set of projection optical devices; and a substrate that receives exposure light beams from the fourth module, wherein the set of illuminating devices in the third module is configured to direct illumination through the set of magnification changing devices in the second module to reflect the illumination from the set of pattern generating devices in the first module, and wherein the reflected light passes back through the set of magnification changing devices in the second module and is directed by the set of illuminating devices in the third module onto the set of projection optical devices in the fourth module.