摘要:
A micromirror (24) of a micromirror array (22) in an illumination system (10) of a microlithographic projection exposure apparatus can be tilted through a respective tilt angle (± x , ± y ) about two tilt axes (x, y). The micromirror (24) is assigned three actuators (E 1 , E 2 , E 3 ) which can respectively be driven by control signals (U 1 , U 2 , U 3 ) in order to tilt the micromirror (24) about the two tilt axes (x, y). Two control variables (SG x , SG y ) are specified, each of which is assigned to one tilt axis (x, y) and which are both assigned to unperturbed tilt angles (± x , ± y ). For any desired combinations of the two control variables (SG x , SG y ), as a function of the two control variables (SG x , SG y ), one (E 1 ) of the three actuators is selected and its control signal (U 1 ) is set to a constant value, in particular zero. The control signals (U 1 , U 2 , U 3 ) are determined so that, when the control signals (U 1 , U 2 , U 3 ) are applied to the other two actuators (E 2 , E 3 ), the micromirror (24) adopts the unperturbed tilt angles (± x , ± y ) as a function of the two control variables (SG x , SG y ).
摘要:
Die vorliegende Erfindung betrifft ein optisches Modul, insbesondere einen Facettenspiegel, mit einer Trägereinheit (112) für eine optische Fläche und einer Stützstruktur (113), wobei die Trägereinheit (112) durch die Stützstruktur (113) abgestützt ist. Die Stützstruktur (113) weist eine Basiseinheit (114), eine erste Stützeinheit und eine von der ersten Stützeinheit (115) verschiedene zweite Stützeinheit (116) auf. Die erste Stützeinheit (115) ist zwischen der Basiseinheit (114) und der Trägereinheit (112) angeordnet und definiert eine erste Bewegungsebene und eine erste Kippachse der Trägereinheit (112), wobei die erste Kippachse senkrecht zu der ersten Bewegungsebene verläuft und die Trägereinheit (112) relativ zu der Basiseinheit (114) um die erste Kippachse verkippbar ist. Die zweite Stützeinheit (116) ist zwischen der Basiseinheit (114) und der Trägereinheit (112) angeordnet und definiert eine zweite Bewegungsebene und eine zweite Kippachse der Trägereinheit (112), wobei die zweite Kippachse senkrecht zu der zweiten Bewegungsebene verläuft, die Trägereinheit (112) relativ zu der Basiseinheit (114) um die zweite Kippachse verkippbar ist und die zweite Kippachse zu der ersten Kippachse geneigt verläuft. Die erste Stützeinheit (115) und die zweite Stützeinheit (116) sind zueinander kinematisch parallel zwischen der Basiseinheit (114) und der Trägereinheit (112) angeordnet, wobei die erste Stützeinheit (115) und die zweite Stützeinheit (116) jeweils nach Art eines Viergelenkgetriebes ausgebildet sind, das eine translatorische Bewegung der Trägereinheit (112) relativ zu der Basiseinheit (114) in der jeweiligen Bewegungsebene zulässt. Die erste Stützeinheit (115) und die zweite Stützeinheit (116) weisen jeweils wenigstens einen Entkopplungsabschnitt auf, der die translatorische Bewegung in der Bewegungsebene der jeweils anderen Stützeinheit (116, 115) zulässt.
摘要:
An optical apparatus capable of illuminating an irradiation surface under a required illumination condition capable of achieving a high light efficiency while keeping a small light loss due to, for example, the overlap error of illuminating fields. The optical apparatus, which illuminates a first area with light from a light source while the first area is longer in a second direction intersecting a first direction than in the first direction, includes a collector optical member which is arranged in an optical path between the light source and the first area, and condenses the light from the light source to form a second area in a predetermined plane, the second area being longer in a fourth direction intersecting a third direction than in the third direction; and a first fly's eye optical member which is provided within the predetermined plane including the second area, and has a plurality of first optical elements guiding the light of the collector optical member to the first area.
摘要:
An illumination device comprising a laser source, a beam expander, a micromirror array having a first control system, a fast steering mirror having a second control system, a diaphragm array, a microlens array, an illumination lens group, and a reflection mirror sequentially along the propagation direction of the laser beam. The first control system comprises a first computer controlling each micromirror on the micro-mirror array through the micromirror array controller to rotate in two-dimensional directions so expanded beam forms desired intensity patterns on the diaphragm array after reflected by the micromirror array and fast reflection mirror and a micromirror array controller; the second control system comprises a second computer controlling the reflection mirror of the fast steering mirror to rotate through fast steering mirror controller so created intensity pattern moves relative to the diaphragm array and a fast steering mirror controller. Method for using the illumination device is provided.
摘要:
An illumination system of a microlithographic projection exposure apparatus (10) comprises an optical integrator (60) having a plurality of light entrance facets (75) each being associated with a secondary light source (106). A spatial light modulator (52) has a light exit surface (57) and transmit or to reflect impinging projection light in a spatially resolved manner. A pupil forming unit (36) directs projection light on the spatial light modulator. An objective (58) images the light exit surface (57) of the spatial light modulator (52) onto the light entrance facets (75) of the optical integrator (60). The light exit surface (57) of the optical light modulator (52) comprises groups (54-1 to 54-8) of object areas (110) being separated by areas (130) that are not imaged on the light entrance facets (75). The objective (58) combines images (110') of the object areas (110) so that the images (110') of the object areas abut on the optical integrator (60).
摘要:
This invention relates to an illumination optical apparatus capable of forming a pupil intensity distribution of a desired shape and desired illuminance and, in turn, capable of realizing illumination conditions of great variety. The illumination optical apparatus has a spatial light modulation unit (2, 3) composed of a first spatial light modulator (2) and a second spatial light modulator (3) arranged in an order of incidence of light, and a distribution forming optical system (5, 7) to form a predetermined light intensity distribution on an illumination pupil, based on a beam having traveled via the first spatial light modulator (2) and the second spatial light modulator 83). The first spatial light modulator (2) has a plurality of first optical elements (2a) which are two- dimensionally arranged and postures of which each are individually controlled. The second spatial light modulator has a plurality of second optical elements which are two-dimensionally arranged in correspondence to the first optical elements and postures of which each are individually controlled.
摘要:
Illumination system for a lithographic projection exposure step-and-scan apparatus comprising a light source, a pupil shaping unit, a field defining unit, a first lens array, a first slit array, a second lens array, a third lens array, a second slit array, a fourth lens array, a condenser lens, and a scanning drive unit sequentially arranged along the light beam propagation direction. The illumination system reduces requirements on lens processing, slit scanning speed, and slit scanning precision, therefore may be implemented more easily.
摘要:
Bei einer Steuereinrichtung (27) zur Steuerung der Positionierung mindestens eines verlagerbaren Einzelspiegels (23) dient mindestens eine Aktuatorelektrode (24) auch als Sensorelektrode (34). Die Ansteuerung der Einzelspiegel (23) erfolgt über ein Pulsweitenmodulationsschema.
摘要:
An illumination system of a microlithographic projection exposure apparatus (10) comprises an optical integrator (60) having a plurality of light entrance facets (75), whose images at least substantially superimpose in a mask plane (88). A spatial light modulator (52) transmits or reflects impinging projection light in a spatially resolved manner. A pupil forming unit directs projection light on the spatial light modulator. An objective (58) images a light exit surface (57) of the spatial light modulator (52) onto the light entrance facets (75) of the optical integrator (60) so that an image (110') of an object area (110) on the light exit surface (57) completely coincides with one of the light entrance facets (75). A control unit (90) controls the spatial light modulator (52) such that along a scan direction (Y) a length of an image, which is formed on a mask (16) from a light pattern in the object area, gradually increases at a beginning of a scan cycle and gradually decreases at the end of the scan cycle.