Patent ID: 8792079

Claim:
An exposure apparatus that exposes an object with an energy beam via an optical member and forms a pattern on the object, the apparatus comprising: a movable body that holds the object and is movable along a predetermined plane; a first encoder system which includes a first scale section that is placed, parallel to the predetermined plane, on one of the movable body and an intermediate member, and at least one first head that is arranged on the other of the movable body and the intermediate member and irradiates a measurement beam on the first scale section, and which measures a first positional relation between the movable body and the intermediate member in the predetermined plane based on an output of the at least one first head; and a second encoder system which includes a plurality of separate and spaced apart scales arranged on a lower surface of a barrel holding the optical member, parallel to the predetermined plane and having no portion farther outward than the barrel, and at least one second head that is arranged on the intermediate member and irradiates a measurement beam on at least one of the plurality of scales, and which measures a second positional relation between the optical member and the intermediate member in the predetermined plane based on an output of the at least one second head, wherein the movable body is driven based on the first positional relation and the second positional relation that have been measured.