Patent ID: 7804578
Filing Date: 2010-09-28
Classification: G03F

Abstract:
1. An exposure apparatus that exposes a substrate to a pattern on an original, the apparatus comprising: an illumination optical system configured to illuminate the pattern on the original; a projection optical system configured to project the pattern on the original, which is illuminated by the illumination optical system, onto the substrate; a vacuum chamber configured to house at least one of the illumination optical system and the projection optical system; a heat absorbing plate disposed over an inner surface of a wall of the vacuum chamber and configured to absorb heat in the vacuum chamber; a heat conductor that includes a metal member that is softer than the heat absorbing plate and the wall of the vacuum chamber, and that fills a space between the heat absorbing plate and the wall of the vacuum chamber to bring the heat absorbing plate and the wall into close contact; and a cooler arranged outside the vacuum chamber and configured to cool the wall of the vacuum chamber.