Patent ID: 9746789
Date: 2017-08-29
CPC Classifications: G03F

Claim:
1. An exposure apparatus which performs a scanning exposure of each of a plurality of shot regions on a substrate to radiation, the apparatus comprising: a measuring device including a first detector configured to perform detection with respect to a measurement point on the substrate in a region being exposed to radiation while scanning of the substrate is performed, and a second detector configured to perform detection with respect to the measurement point prior to detection by the first detector while scanning of the substrate is performed, and configured to respectively measure heights of the substrate based on an output from the first detector and an output from the second detector; and a processor configured to determine, based on whether an error falls within an allowable range, the error being an error between a target height and a measured height obtained by the measuring device based on an output from the first detector while a scanning exposure of a first shot region on the substrate to radiation is performed, a first measurement point where the measuring device performs measurement first based on an output from the second detector with respect to a second shot region different from the first shot region.