Stage positioning system and lithographic apparatus
First Claim
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1. A stage positioning system, comprising:
- a first body;
a second body;
an actuator configured to move the first body; and
a coupling arranged to couple the first body and the second body to each other,wherein the coupling comprises a visco-elastic element arranged to couple the first body and the second body to each other and to transmit to the first body a force of the actuator to move the first body, and the second body is arranged to couple the actuator and the coupling to each other, andwherein the coupling comprises an elastic element arranged to couple the first body and the second body to each other in parallel to the visco-elastic element.
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Abstract
A stage positioning system, includes a first body, a second body and a coupling arranged to couple the first body and the second body to each other. The coupling includes a visco-elastic element arranged to couple the first body and the second body to each other. The stage positioning system may further include a sensor to provide a signal representative of a position of the first body. The stage positioning system may further include an actuator to move the first body. The second body may be arranged to couple the actuator and the coupling to each other.
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Citations
20 Claims
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1. A stage positioning system, comprising:
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a first body; a second body; an actuator configured to move the first body; and a coupling arranged to couple the first body and the second body to each other, wherein the coupling comprises a visco-elastic element arranged to couple the first body and the second body to each other and to transmit to the first body a force of the actuator to move the first body, and the second body is arranged to couple the actuator and the coupling to each other, and wherein the coupling comprises an elastic element arranged to couple the first body and the second body to each other in parallel to the visco-elastic element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
using an actuator of a stage positioning system to move a first body of the stage positioning system, wherein a coupling of the stage positioning system couples the first body to a second body of the stage positioning system and wherein the coupling comprises a visco-elastic element coupling the first body and the second body to each other and arranged to transmit to the first body a force of the actuator to move the first body, and the second body couples the actuator and the coupling to each other and wherein the coupling comprises an elastic element arranged to couple the first body and the second body to each other in parallel to the visco-elastic element.
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19. A stage positioning system, comprising:
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a first body; a second body; an actuator configured to move the first body; and a coupling arranged to couple the first body and the second body to each other, wherein the coupling comprises a visco-elastic element arranged to couple the first body and the second body to each other, and the second body is arranged to couple the actuator and the coupling to each other, wherein the visco-elastic element has a frequency-dependent stiffness, the frequency-dependent stiffness is characterized by a glass transition region, the first body forms a dynamical system characterized by a dominant natural frequency, and the dominant natural frequency lies in the glass transition region at an operating temperature of the stage positioning system, and wherein the first body, the second body and the coupling together form a further dynamical system having a further natural frequency, the further natural frequency corresponds to a resonance mode that is substantially determined by a deformation of the coupling and the dominant natural frequency is essentially equal to the further natural frequency. - View Dependent Claims (20)
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Specification