Patent ID: 7570344

Claim:
An exposure apparatus which exposes a substrate via a liquid, comprising: a projection optical system configured to project a pattern of a reticle onto the substrate; a substrate stage configured to hold the substrate and move; a top plate which is arranged on the substrate stage and in which an opening is formed; and a measurement member which is arranged in the opening formed in the top plate arranged on the substrate stage, wherein a gap is formed between the top plate and the measurement member in a plane perpendicular to an optical axis of the projection optical system, and wherein the exposure apparatus satisfies following formula: γ·cos θ1· L 1+γ·cos θ2· L 2+ Pf·S< 0 where θ 1 is a contact angle between the measurement member and the liquid, L 1 is an outer circumferential length of the measurement member in the plane, θ 2 is a contact angle between the top plate and the liquid, L 2 is an inner circumferential length of the opening in the plane, Pf is a liquid pressure of the liquid which has partially entered the gap, γ is a surface tension of the liquid, and S is an area of the gap in the plane.