Patent ID: 7738074
Filing Date: 2010-06-15
Classification: G03F

Abstract:
1. A lithographic apparatus comprising: a support constructed to hold a patterning device, the patterning device being capable of imparting a radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; a projection system configured to project the patterned radiation beam onto a target portion of the substrate; a sensor configured to measure a temperature of the substrate, or of at least part of the projection system, or of both the substrate and the at least part of the projection system; and a liquid supply system configured to at least partly fill a space between the projection system and the substrate with a liquid, the liquid supply system comprising a temperature controller configured to adjust, based on the measured temperature, the temperature of the substrate, the liquid and the at least a part of the projection system to achieve, at a point in time, the temperatures of the substrate and the liquid being equal to a common temperature and, at a point in time, the temperatures of the at least part of the projection system and the liquid being equal to the common temperature.