Patent ID: 9239526
Filing Date: 2016-01-19
CPC Classification: G03F

Claim Text:
1. An exposure apparatus comprising: a light blocking unit that passes an exposure light reflected on a reflective mask through an aperture and blocks the exposure light at a part other than the aperture; a detection unit that measures a light intensity of the exposure light passed through the light blocking unit; and a calculation unit that calculates, based on the light intensity, a transfer characteristic when a pattern on the reflective mask is transferred to a substrate, wherein, in the light blocking unit, an in-plane position that is a position of the aperture on an aperture plane is adjusted with respect to the detection unit and a position in an axial direction that is a position in an optical axis direction of the exposure light is adjusted with respect to the detection unit, and the calculation unit calculates, based on the position in the axial direction in which the light intensity is maximized after the in-plane position is adjusted, the transfer characteristic.