Patent ID: 7884935
Filing Date: 2011-02-08
Classification: B41M,B82Y,G03F

Abstract:
1. A pattern transfer apparatus for transferring an imprint pattern formed on a mold, provided with an alignment mark, to a resin material on a substrate, provided with an alignment mark, alignment of the mold and the substrate with each other being performed in an in-plane direction that includes an x-direction and a y-direction, the apparatus comprising: (a) a first image pickup device for obtaining an image of an object positioned at a first object position; (b) a second image pickup device for obtaining an image of an object positioned at a second object position, spaced apart from the first object position in a z-direction orthogonal to the in-plane direction, the second object position being more distant from the alignment mark of the mold than the first object position; and (c) an optical system configured to form an image of an object positioned at the first object position and an image of an object positioned at the second object position, wherein the apparatus is configured such that: