Abstract:
An exposure apparatus (1) including a projection system (12, 14) configured to project a plurality of radiation beams onto a target; a movable frame (8) that is at least rotatable around an axis (10); and an actuator system (11) configured to displace the movable frame to an axis away from an axis corresponding to the geometric center of the movable frame and to cause the frame to rotate around an axis through the center of mass of the frame.
Abstract:
A lithographic apparatus component, such as a metrology system or an optical element (e.g., a mirror) is provided with a temperature control system for controlling deformation of the component. The control system includes channels provided close to a surface of the component through which a two phase cooling medium is supplied. The metrology system measures a position of at least a moveable item with respect to a reference position and includes a metrology frame connected to the reference position. An encoder is connected to the moveable item and constructed and arranged to measure a relative position of the encoder with respect to a reference grid. The reference grid may be provided directly on a surface of the metrology frame. A lithographic projection apparatus may have the metrology system for measuring a position of the substrate table with respect to the projection system.
Abstract:
A method of loading a flexible substrate, a device manufacturing method, an apparatus for loading a flexible substrate, and a lithography apparatus. According to an embodiment, there is provided a method of loading a flexible substrate onto a support for use in an exposure apparatus, including transferring the substrate progressively from a substrate carrier to the support in a way that a boundary line separating a region of the substrate that is loaded onto the support and a region of the substrate that is not yet loaded onto the support remains substantially straight during the loading process.
Abstract:
Disclosed is a system configured to project a beam of radiation onto a target portion of a substrate within a lithographic apparatus. The system comprises a mirror having an actuator for positioning the mirror and/or configuring the shape of the mirror, the actuator also providing active damping to the mirror, and a controller for generating actuator control signals for control of said actuator(s). A first coordinate system is used for control of said actuator(s) when positioning said mirror and/or configuring the shape of said mirror and a second coordinate system is used for control of said actuator(s) when providing active damping to said mirror.
Abstract:
A projection system, configured to project a radiation beam onto a target, includes a rotatable frame (8) configured to rotate about an axis defining a tangential direction and a radial direction, wherein the rotatable frame holds a lens configured to focus the radiation beam in only the tangential or radial direction; and a stationary part comprising a substantially stationary lens configured to focus the radiation beam in only the other of the tangential or radial direction. Provisions are made to prevent moments to be exerted on the lens held by the rotatable frame.