Patent ID: 8009273

Claim:
An exposure apparatus configured to expose a pattern of an original on a substrate through a projection optical system, the apparatus comprising: a holding unit configured to hold the projection optical system; at least three anti-vibration mounts configured to support the holding unit; at least three supporting members configured to support the at least three anti-vibration mounts respectively; a base structure configured to support at least one of an original stage which holds the original, an illumination optical system which illuminates the original with exposure illumination light, a conveyance device which conveys the original, and a conveyance device which conveys the substrate; a position detector configured to detect a relative position of the holding unit with respect to the base structure; and a controller configured to control at least one of a distance between the base structure and the holding unit and an angle of tilt of the holding unit based on an output from the position detector, wherein the at least three supporting members are independent of each other without connecting to each other, and wherein the base structure are independent of the supporting members without connecting to the supporting members.