Patent ID: 8077290
Filing Date: 2011-12-13
Classification: G03B,G03F

Abstract:
1. An exposure apparatus for focusing a shot of a substrate and exposing the shot to radiation, the apparatus comprising: a stage configured to hold the substrate and to be moved; a measurement station including a measurement device configured to perform measurement, with respect to each of a plurality of measurement points in the shot of the substrate held by the stage, of a position of the shot to focus the shot; and an exposure station configured to expose the shot to radiation while the stage is scanned, the stage being moved to the exposure station from the measurement station after the measurement is performed, and being scanned in the exposure station in accordance with the performed measurement, wherein the apparatus is configured to obtain an output of the measurement device with respect to each of the plurality of measurement points in each of a plurality of measurement point sets, the plurality of measurement points in the shot, as a measurement point set being in the shot, being shifted to generate the plurality of measurement point sets in the shot, to obtain a status concerning an error of a measurement value of the measurement device with respect to each of the plurality of measurement point sets based on the obtained outputs, and to select one of the plurality of measurement point sets where the measurement device performs the measurement based on the obtained statuses.