Patent ID: 7800735

Claim:
A substrate support apparatus, comprising: a Z stage plate; a stage mirror; one or more actuators attached to the Z stage plate, wherein the one or more actuators are configured to impart movement to the stage mirror in a Z direction as the Z stage plate is moved in one or more directions in a plane perpendicular to the Z direction, wherein the Z direction is a vertical direction that is normal to an X direction and a Y direction; and a substrate chuck mounted to the stage mirror with constraints on six degrees of freedom of movement of the substrate chuck; wherein the one or more actuators include one or more force flexures wherein each force flexure includes: a base portion attached to the Z stage plate; and a cantilever portion extending in a lateral direction from the base portion, wherein the cantilever portion includes a parallelogram flexure coupled between the base portion and a free end of the cantilever portion.