Patent ID: 9551942
Date: 2017-01-24
CPC Classifications: G03F

Claim:
1. An exposure apparatus which exposes an object with exposure light from a light source, the exposure apparatus comprising: a first mirror array including a plurality of mirrors and arranged on an optical path of the exposure light from the light source; a first optical system arranged on an optical path of exposure light via the first mirror array and configured to irradiate an illumination pupil with the exposure light via the first mirror array, the exposure light having a certain light intensity distribution at the illumination pupil; a second optical system arranged on an optical path of exposure light via the first optical system and configured to illuminate an irradiated plane with the exposure light via the first optical system; a second mirror array including a plurality of mirrors and arranged on the irradiated plane; a projection optical system including an aperture stop and configured to project a predetermined pattern on the object with exposure light from the second mirror array; and a controller which controls states of the plurality of mirrors of the first and second mirror arrays, wherein the controller changes the states of the plurality of mirrors of the first mirror array in accordance with the states of the plurality of mirrors of the second mirror array.