Patent ID: 8786829

Claim:
An exposure apparatus comprising: a movable body which holds a mounted object and substantially moves along a predetermined plane; a liquid supply device which supplies liquid on a surface of at least one of the object and the movable body on which the object is mounted; a pattern generation device which includes an optical system that has liquid supplied to a space formed with the surface of at least one of the object and the movable body, and which irradiates an energy beam on the object via the optical system and the liquid, and forms a pattern on the object; and a measurement system which has a plurality of encoder heads each placed on a surface of the movable body that is parallel to the predetermined plane, and out of the plurality of encoder heads, measures positional information of the movable body, based on measurement values of a predetermined number of encoder heads that face a grating section placed outside the movable body and in parallel to the predetermined plane, wherein when some of the plurality of encoder heads are located in a liquid immersion area formed with the liquid, the measurement system measures the positional information of the movable body based on measurement values of a predetermined number of encoder heads located outside the liquid immersion area.