Patent ID: 8703035

Claim:
An imprint apparatus which molds an imprint material on a substrate with a mold to form a pattern on the substrate, the apparatus comprising: a holder configured to hold a mold on which a first mark is formed; a stage configured to hold a substrate on which a second mark is formed; a detector; and an adjusting device configured to adjust an angle of an optical axis of the detector, wherein the second mark includes a grating pattern having grating pitches in both a first direction and a second direction that are respectively parallel to a first axis and a second axis that are parallel to a pattern surface of the mold and orthogonal to each other, wherein the first mark includes a grating pattern having a grating pitch in the first direction, wherein the first mark and the second mark have respective grating pitches different from each other in the first direction, wherein the detector includes an image sensor, and an optical system configured to form a moire fringe on an image sensing surface of the image sensor using a light that is obliquely incident on the first mark, transmitted through a grating of the first mark, diffracted by a grating of the second mark, and transmitted again through the grating of the first mark, and wherein the adjusting device is configured to change an angle between the optical axis of the detector and a third axis that is perpendicular to the first axis and the second axis.