Patent ID: 8355114

Claim:
An exposure apparatus that exposes an object with an energy beam via an optical system and a liquid, the apparatus comprising: a first and a second movable bodies which independently move on a guide surface parallel to a two-dimensional plane while each holding the object, and at each of which a measurement surface parallel to the two-dimensional plane is arranged; a guide surface forming member that forms the guide surface; a liquid supply device that supplies the liquid to a space between the optical system and the object held by the first or second movable body; a first measurement system that irradiates the measurement surface of the first or second movable body that moves within a first area, with a measurement beam from a side opposite to the optical system with respect to the guide surface forming member, and receives light from the measurement surface, thereby obtaining positional information of the first or second movable body; and a second measurement system that, when one of the first and second movable bodies located within the first area moves in proximity to the other of the first and second movable bodies and thereby the liquid supplied on the one of the movable bodies moves onto the other of the movable bodies, obtains at least positional information of the other of the movable bodies.