Patent ID: 9599906
Date: 2017-03-21
CPC Classifications: G02B,G03F

Claim:
1. An exposure method for exposing an object with exposure light from a light source to project a pattern onto the object, comprising: illuminating a plurality of reflective elements arranged on a predetermined surface with the exposure light from the light source; directing the exposure light from the plurality of reflective elements to a projection optical system; and exposing the object with the exposure light from the projection optical system, wherein the illuminating includes: setting first reflective elements of the plurality of reflective elements so as to reflect the exposure light in a first phase, wherein each of the first reflective elements is situated in a first region or a second region of the predetermined surface, wherein the first region is displaced from the second region along a first direction on the predetermined surface; and setting second reflective elements of the plurality of reflective elements situated within a third region so as to reflect the exposure light in a second phase different from the first phase, the third region being located between the first region and the second region, wherein a first boundary corresponding to a third-region-side edge of the first region is non-linear, the first boundary defined by edges of the first reflective elements that are arranged along the third-region-side edge of the first region, and wherein the exposing the object includes exposing an edge of the pattern with the exposure light received from the first reflective elements of the first region that defines the first boundary.