Patent ID: 6778260
Filing Date: 2004-08-17
Classification: G03F

Abstract:
A coordinate measuring stage (1) with interferometric position determination, comprising:a stationary base part (2) having a linear X guidance element (3); a center part (4) placed above said stationary base part (2), wherein said center part (4) is movable slidingly along the linear X guidance element (3), which has a first drive element (9) associated with it and is rigidly joined to a linear Y guidance element (6); an X-Y-positionable stage body (5) placed above said center part (4), wherein said X-Y-positionable stage body (5), which is assigned for reception of a substrate, is movable slidingly along the Y guidance element (6) and has a second drive element (11) associated with it; said center part (4) is arranged in freely suspended fashion over said base part (2), being supported with its one end on said Y guidance element (6) and with its other end on an additionally arranged support element (13); said Y guidance element (6), said support element (13), and said stage body (5) are supported, slidably and independently of one another, on the surface of said base part (2); and said base part (2), said center part (4), and said stage body (5) each comprise an internally located opening (18) for a transmitted-light region.