发明名称 Exposure apparatus and method of decreasing fluctuations in optical characteristics of projection system
摘要 The present invention provides an exposure apparatus including a map obtaining unit configured to obtain a pupil aberration map representing saturation values of fluctuations in each of optical characteristics generated in a plurality of regions, which are obtained by dividing a pupil plane of a projection optical system, upon irradiating the plurality of regions with a unit amount of light, a distribution obtaining unit configured to obtain a light intensity distribution formed on the pupil plane of the projection optical system upon illuminating a pattern of an arbitrary reticle in an arbitrary illumination mode, and a calculation unit configured to calculate a saturation value of a fluctuation in each of the optical characteristics generated in the projection optical system upon illuminating the pattern of the arbitrary reticle in the arbitrary illumination mode, based on the obtained pupil aberration map and the obtained light intensity distribution.
申请公布号 US8564758(B2) 申请公布日期 2013.10.22
申请号 US20090397625 申请日期 2009.03.04
申请人 SHIGENOBU ATSUSHI;HASEGAWA YASUO;SUKEGAWA TAKASHI;CANON KABUSHIKI KAISHA 发明人 SHIGENOBU ATSUSHI;HASEGAWA YASUO;SUKEGAWA TAKASHI
分类号 G03B27/68;G03B27/32 主分类号 G03B27/68
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