Patent ID: 6794100
Filing Date: 2004-09-21
Classification: G03F,Y10S

Abstract:
A method for controlling an intensity distribution of radiation directed to a microlithographic substrate, comprising:directing a radiation beam from a radiation source along a radiation path, the radiation beam having a first distribution of intensity as a function of location in a plane generally transverse to the radiation path; impinging the radiation beam on an adaptive structure positioned in the radiation path; changing an intensity distribution of the radiation beam from the first distribution to a second distribution different than the first distribution by changing a reflection angle of a first portion of the adaptive structure relative to a reflection angle of a second portion of the adaptive structure; directing the radiation beam away from the adaptive structure along the radiation path; passing the radiation beam directed away from the adaptive structure through a reticle positioned between the adaptive structure and the microlithographic substrate; and impinging the radiation beam on the microlithographic substrate.