Patent ID: 8446569

Claim:
An exposure apparatus that exposes an object with an energy beam via an optical system supported by a first support member, the apparatus comprising: a movable body that is movable along a two-dimensional plane that includes a first axis and a second axis orthogonal to each other, while holding the object; a guide surface forming member which has a first section and a second section that are placed side by side with, at least one border line serving as a boundary, within the two-dimensional plane, the first section and the second section forming a guide surface used on movement of the movable body; a second support member that is placed on a side opposite to the optical system via the guide surface forming member so as to be away from the guide surface forming member, and has a positional relation with the first support member maintained in a predetermined relation; and a measurement system which includes a measurement member that irradiates a measurement surface parallel to the two-dimensional plane with a measurement beam and receives light from the measurement surface, and which obtains positional information of the movable body at least within the two-dimensional plane based on an output of the measurement member, the measurement surface being arranged at one of the movable body and the second support member and at least a part of the measurement member being arranged at the other of the movable body and the second support member.