Patent ID: 6894763

Claim:
An exposure apparatus which transfers patterns formed on masks onto substrates, the exposure apparatus comprising: first and second mask stages which are movable along a first axial direction while holding the masks respectively; illumination optical systems which radiate illumination light beams onto the respective masks; first and second projection optical systems which project the illumination light beams outgoing from the respective masks onto the substrates; first and second substrate stages which are arranged on the same side as that of the first and second mask stages with respect to the first and second projection optical systems respectively and which are movable while holding the substrates respectively, the first mask stage and the first substrate stage are movable independent from each other during exposure, the second mask stage and the second substrate stage are movable independent from each other during exposure; and a driving unit which synchronously moves the first mask stage and the first substrate stage along the first axial direction at a velocity ratio corresponding to a projection magnification of the first projection optical system and which synchronously moves the second mask stage and the second substrate stage along the first axial direction at a velocity ratio corresponding to a projection magnification of the second projection optical system.