Patent ID: 8411250
Filing Date: 2013-04-02
Classification: G03B,G03F

Abstract:
1. An exposure apparatus which includes an illumination optical system, an original stage which holds an original, a projection optical system, and a substrate stage which holds a substrate, and performs an exposure process of the substrate by illuminating the original by the illumination optical system such that an image of a pattern of the original is projected onto the substrate by the projection optical system, the apparatus comprising: a measurement system configured to perform a measurement process for the exposure process using a mark arranged on the original stage and a mark arranged on the substrate stage; and a device configured to set an effective light source distribution on a pupil plane of the illumination optical system, wherein the device sets an effective light source distribution used in the measurement process so as to have a shape that is similar to a shape of an effective light source distribution used in the exposure process and so as to have an area that is larger than an area of the effective light source distribution used in the exposure process.