Patent ID: 6841965

Claim:
A method of making a microlithography system that forms an image onto an object, comprising the steps of: providing an irradiation apparatus that irradiates the object with radiation to form the image on the object; providing a movable stage associated with the irradiation apparatus, the movable stage having a first mirror; providing a first support structure; providing a second mirror that is connected to the irradiation apparatus; providing a second support structure dynamically isolated from the first support structure to support the irradiation apparatus, the second support structure including a base member that supports the movable stage; providing a drive having a first portion connected to the movable stage and a second portion connected to the first support structure to move the movable stage in a two-dimensional plane such that a reaction force exerted by the movement of the movable stage is transferred to the first support structure, the second portion of the drive not contacting the movable stage mechanically; and providing a position detector that cooperates with the first mirror and the second mirror to detect a position of the movable stage in the two-dimensional plane, the position detector being supported by the second support structure.