Patent ID: 7206060

Claim:
An exposure apparatus comprising: an illumination optical system for illuminating a reticle on a target surface using light from a light source; and a projection optical system for projecting a pattern of the reticle onto a substrate, wherein the illumination optical system includes: a polarizing element that is arranged in an optical path from the light source to the target surface near a pupil position of the illumination optical system, and adjusts a polarization ratio of the light; and plural optical elements that are arranged in the optical path from the polarizing element to the target surface, wherein the total birefringence of the plural optical elements satisfies m+2σ<1.0 nm/cm, where m is an average of birefringence amount of a glass material of the plural optical elements, and σ is a standard variation birefringence amount of glass materials of the plural optical elements.