Projection exposure apparatus and semiconductor device manufactu

Photocopying – Projection printing and copying cameras – Step and repeat

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355 71, G03B 2742, G03B 2772

Patent

active

054248035

ABSTRACT:
A projection exposure apparatus includes an illumination optical system for constituting illumination source for illuminating an original having an exposure pattern, the illumination optical system including changing mechanism for changing a shape of the illumination source; a projection optical system for projecting an image of the exposure pattern onto a surface to be exposed; an adjuster responsive to the changing mechanism to adjust the projection optical system.

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