WO2016020226A1 - Verkippen eines optischen elements - Google Patents
Verkippen eines optischen elements Download PDFInfo
- Publication number
- WO2016020226A1 WO2016020226A1 PCT/EP2015/067266 EP2015067266W WO2016020226A1 WO 2016020226 A1 WO2016020226 A1 WO 2016020226A1 EP 2015067266 W EP2015067266 W EP 2015067266W WO 2016020226 A1 WO2016020226 A1 WO 2016020226A1
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- WO
- WIPO (PCT)
- Prior art keywords
- optical
- tilting
- main extension
- optical surface
- unit
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1822—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors comprising means for aligning the optical axis
- G02B7/1827—Motorised alignment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1822—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors comprising means for aligning the optical axis
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/70075—Homogenization of illumination intensity in the mask plane by using an integrator, e.g. fly's eye lens, facet mirror or glass rod, by using a diffusing optical element or by beam deflection
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/70091—Illumination settings, i.e. intensity distribution in the pupil plane or angular distribution in the field plane; On-axis or off-axis settings, e.g. annular, dipole or quadrupole settings; Partial coherence control, i.e. sigma or numerical aperture [NA]
- G03F7/70116—Off-axis setting using a programmable means, e.g. liquid crystal display [LCD], digital micromirror device [DMD] or pupil facets
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/70191—Optical correction elements, filters or phase plates for controlling intensity, wavelength, polarisation, phase or the like
Definitions
- the present invention relates to an optical unit and a method for supporting an optical element.
- the invention can be used in conjunction with any optical devices or optical imaging methods.
- it can be used in connection with the microlithography used in the manufacture of microelectronic circuits or of measuring systems for such systems for microlithography.
- the position and geometry of optical modules of the imaging device for example the modules with optical elements such as lenses, mirrors or gratings but also the masks and substrates used, to be set as precisely as possible in accordance with predetermined setpoint values during operation or to stabilize such components in a predetermined position or geometry in order to achieve a correspondingly high imaging quality.
- the accuracy requirements in the microscopic range are on the order of a few nanometers or less. Not least of all, they are a consequence of the constant need to increase the resolution of the optical systems used in the manufacture of microelectronic circuits, in order to advance the miniaturization of the microelectronic circuits to be produced. With the increased resolution and thus usually associated reduction in the wavelength of the light used naturally increase the requirements of the
- Facettenetti lies the tilt axis in the main plane of extension of the optical surface, wherein the force exerted by the actuator tipping moment parallel to the
- Main plane of extension of the optical surface is such that it becomes a pure
- Tilting the optical surface comes without lateral migration of the facet element from the space provided for the facet element space.
- the known facet elements can in principle be positioned particularly close together So no big gap between the facet elements.
- the problem here, however, is that the rotationally symmetric design itself requires a comparatively low space utilization or comparatively large gaps between the facet elements, in which there is a comparatively large loss of light.
- facet elements are known from DE 10 2012 223 034 A1 (Latzel et al.), The disclosure of which is incorporated herein by reference.
- the support of the respective facet element is realized on a support structure via a three-rod support in the manner of a ball joint, wherein the optical surfaces of the facet elements extend parallel to the plane of the support structure.
- the ball-joint-like support defines an infinite number of tilting axes for the respective facet element, so that the actual tilting axis then has to be predetermined by the actuators.
- the actuator also acts here again parallel to the plane of the support structure of the facet elements, so that the
- Tilting moment which is exerted on the facet element, lies in the optical surface. Consequently, tilting axes are again realized by the actuators here, which run parallel to the plane of the support structure of the facet elements.
- This tendency of the tilting moment to the main extension plane has the disadvantage that the tilting moment in addition to the desired (the tilting of the optical surface generating) component parallel to the main extension plane also has a parasitic component perpendicular to the main extension plane, which brings about an undesired rotation of the optical surface in the main plane of extension.
- this rotation of the optical surface in the main plane of extension leads to a more or less strong lateral emigration of the free ends of the facet element, for which corresponding (from the viewpoint of the lowest possible loss of light) undesired free spaces between the
- the present invention is therefore based on the object to provide an optical unit and a method for supporting an optical element which do not have the abovementioned disadvantages or at least to a lesser extent and in particular in a simple manner despite the possibility of tilting the optical Surfaces ensure a particularly high area utilization or a particularly dense packing of the facet elements.
- the present invention is based on the consideration that, despite the possibility of tilting in a simple manner, a particularly high area utilization or a particularly dense packing of the facet elements can be achieved if the support unit is designed to tilt the optical surface by the overturning moment of
- Actuator to specify a tilt axis for the optical surface, which is located substantially in the main plane of extension of the optical surface.
- Supporting device is possible to specify a tilting axis for the optical surface, which is located substantially in the main plane of extension of the optical surface, so that it is possible under these circumstances, to prevent sideways emigration of parts of the optical element when tilting the optical surface. Accordingly, it is also possible, despite the active adjustability (eg, when changing theroissettings) to realize a particularly dense packing of the optical elements with low light loss.
- the present invention therefore relates to an optical unit, in particular a facet mirror unit, having an optical element and a
- the optical element has a, in particular elongate, optical surface defining a main extension plane and a main extension direction in the main extension plane
- the support means comprises a support unit and an actuator unit.
- the actuator unit is designed to tilt the optical surface by applying a tilting moment to the optical element via the actuator unit, the tilting moment being inclined to the main extension plane.
- the support unit is designed to tilt the optical surface through the
- Tilting moment of the actuator to specify a tilting axis for the optical surface which is located substantially in the main plane of extension of the optical surface.
- the tilting axis can basically be oriented almost arbitrarily within the main extension plane.
- a particularly dense packing or closely juxtaposed arrangement of the optical elements is possible if the support unit is designed such that the tilting axis for the optical surface is substantially parallel, in particular substantially collinear, to the main extension direction.
- the present invention can be used in principle in any constellations with any inclination of the overturning moment to the main extension plane. Particularly favorable results can be achieved if the tilting moment by up to 30 °,
- the tilting moment which is inclined to the main extension plane, or its parasitic component (which causes the parasitic lateral outward movement) perpendicular to the main extension plane, can be effectively compensated with especially simple passive means.
- the tilting axis can basically run at a certain distance from the optical surface. However, particularly favorable kinematic conditions result if the tilting axis for the optical surface lies in at least one tilting axis point substantially on the optical surface. It is particularly preferred if the tilt axis for the optical surface is in the defined in the tilt axis point tangent plane of the optical surface.
- the support unit is designed as a passive device which defines the tilting axis via passive elements.
- the support unit may in principle be designed in any suitable manner to support the optical element.
- the support unit preferably comprises at least two support elements, in particular at least three support elements, and a base element, wherein at least a majority of the weight of the optical element is introduced into the base element via the support elements in at least one operating state, wherein in particular at least 80%, preferably at least 90%, more preferably 95% to 100%, of the weight of the optical element are introduced into the base member.
- the support unit comprises at least two elastically deformable at least partially support elements which define the tilting axis.
- an element designed in the manner of a leaf spring or the like can be used, which forms the corresponding elastically deformable section.
- the support unit may comprise at least one guide unit which is connected to the optical element and limits at least two degrees of freedom of movement, in particular three degrees of freedom of movement, of the optical element for defining the tilt axis.
- the rotational degree of freedom is preferably perpendicular to
- Supporting unit therefore at least one guide unit which is connected to the optical element and is designed to define the tilting axis such that it has a perpendicular to the main plane of extension of the optical surface acting component of the overturning moment receives.
- the support unit comprises at least two elastically deformable elements designed in the manner of a leaf spring
- each of the support elements preferably defines a leaf spring main extension plane, wherein the support elements are arranged inclined to one another in such a way that the leaf spring main extension planes intersect in the tilt axis.
- the geometry of the support elements may in principle be selected in any suitable manner in order to define the tilting axis in the desired position.
- at least one of the support elements is designed as a leaf spring, which is formed essentially flat in a state loaded only by the weight force of the optical element. This results in particularly easy-to-manufacture, robust configurations.
- Leaf spring main plane is formed, wherein the maximum thickness dimension is in particular less than 4%, preferably less than 2%, more preferably 0.2% to 1%, the length dimension.
- the leaf spring elements can in principle have any outer contour, as long as their Blattfedermaschineerstreckungsebene intersect in the tilt axis.
- Robust configurations that are particularly easy to produce arise when each of the support elements defines a leaf spring main extension plane and at least one of the support elements has a substantially parallelogram-shaped outer contour in its leaf spring main plane, wherein at least one pair of sides of the outer contour runs substantially parallel to the tilt axis.
- the support unit comprises at least three formed in the manner of an elastic strut, elastically deformable support elements which define the tilting axis. You can do this besipiellus simple, designed in the manner of a bar spring designed elastic struts.
- the arrangement of the elastic struts can basically be chosen arbitrarily, wherein the support elements are preferably arranged in the manner of a tripod.
- each of the support elements defines one
- Strut longitudinal axis wherein the support elements are arranged inclined to each other such that the strut longitudinal axes intersect at a point of the tilt axis.
- the support elements preferably each define a strut longitudinal axis, wherein they have substantially the same length dimension along their strut longitudinal axis. This results in particularly easy to implement designs.
- the elastic struts can in turn be designed in any way
- At least one of the support elements is designed as a bar spring, which is formed in a substantially loaded only by the weight of the optical element state substantially.
- At least one of the support members is formed as a slender bar spring having a length dimension along a longitudinal axis and a maximum transverse dimension perpendicular to the longitudinal axis, wherein the maximum transverse dimension
- the support unit comprises a base member and at least one guide unit for defining the tilting axis, wherein the support elements on the
- Base element are supported and the guide unit kinematically parallel to the
- the guide unit preferably restricts at least two degrees of freedom of movement, in particular three degrees of freedom of movement, of the optical element in order to achieve the desired compensation of the parasitic component of the tilting moment.
- the rotational degree of freedom is perpendicular to
- the guide unit is in particular designed such that it is perpendicular to the
- Main extension plane of the optical surface acting component of the overturning moment receives.
- the parasitic component of the tilting moment which acts perpendicularly to the main extension plane of the optical surface may optionally also be compensated only in part.
- the guide unit is designed such that it exerts a counter-torque on the optical element when tilting the optical surface by the tilting moment, the counter-torque at least a part, in particular at least 75%, preferably at least 85%, more preferably 90% to 100% , Compensates a perpendicular to the main plane of extension of the optical surface acting component of the tilting moment.
- the guide unit can in principle be of any desired design as long as the desired at least partial compensation of the parasitic component of the tilting moment is achieved.
- the guide unit has at least one guide element which is connected in an articulated manner to the optical element and the base element and which effects the at least partial compensation of the parasitic component of the overturning moment.
- the guide unit has at least two hinged to the optical element and the
- Base element connected to guide elements, wherein the guide elements
- Main extension plane and runs perpendicular to the main extension direction.
- the guide unit can in principle be of any desired design in order to achieve the compensation of the parasitic component of the overturning moment.
- one or more simple bar elements or the like may be used to achieve the desired one Introduce counter moment in the optical element.
- the guide unit has at least one designed in the manner of a leaf spring
- connection between the optical element and the base element can in principle be designed as desired in order to achieve the compensation of the parasitic component of the overturning moment.
- at least one guide element defines a first articulation point on the optical element and a second articulation point on the base element, wherein a connecting line between the first articulation point and the second articulation point in a plane perpendicular to the main extension plane and parallel to the overturning moment by a first inclination angle to the Tilting momentally inclined, wherein the first inclination angle in particular 1 ° to 30 °, preferably 5 ° to 20 °, more preferably 8 ° to 15 °.
- This can be achieved in each case in a particularly simple manner, at least partial compensation of the parasitic component of the overturning moment.
- Connecting line preferably runs in the same direction of rotation as the
- the support elements define a
- Fulcrum which is in particular in the main plane of extension, during the first pivot point, in particular in the transverse direction of the optical element, around a
- Fulcrum distance is spaced from the fulcrum.
- An articulation point distance between the first articulation point and the second articulation point and / or the pivot point distance and / or the first inclination angle and / or the second inclination angle is then chosen such that when tilting the optical surface by the tilting moment of the actuator a tilt axis for the optical surface is predetermined, which is located substantially in the main plane of extension of the optical surface.
- the tilting moment may be the only tilting torque predetermined or generated during operation.
- the tilt axis described above is a first tilt axis of the optical surface, while the associated tilting moment is a first tilting moment.
- the support unit is designed to define, under the action of a second tilting moment extending transversely, in particular perpendicularly, to the first tilting moment, a second tilting axis of the optical surface extending transversely, in particular perpendicularly, to the first tilting axis.
- the second tilting axis is in this case preferably again substantially in the
- the support unit is therefore also formed in this context as a passive device which defines the second tilt axis via passive elements.
- the support unit may in turn comprise at least one guide unit which is connected to the optical element and at least two for defining the second tilt axis
- the support unit comprises at least two elastically deformable at least partially supporting elements which define the second tilting axis, wherein it is preferably in turn formed in the manner of a leaf spring supporting elements.
- the support unit may comprise at least two elastically deformable support elements designed in the manner of a leaf spring, in particular as a thin leaf spring, which define the second tilt axis. It can be provided that each of the
- Support elements a Blattfedermaschineerstreckungsebene defined and the support elements are arranged inclined to each other that intersect the Blattfedermaschineerstreckungsebenen in the second tilt axis: furthermore, it can be provided that at least one of the support elements in its Blattfedermaschineerstreckungssebene has a substantially parallelogram-shaped outer contour, wherein at least one pair of pages
- Outer contour is substantially parallel to the second tilt axis.
- the present invention can basically be used for all configurations in which the tilting moment of the actuator generates a parasitic component which, when the optical surface is tilted, produces an undesired lateral turning out of the optical element in the main extension plane of the optical surface.
- the optical surface in the main extension direction is elongated and / or transversely to the
- Main extension narrow. Particularly favorable constellations arise in cases in which the optical surface in the main extension direction has a first maximum dimension and perpendicular to the main extension direction has a second maximum dimension, the second maximum dimension less than 10%, preferably less than 5%, more preferably 0.2% to 2%, more preferably 0.5% to 1%, the first maximum dimension,
- the actuator unit can in principle be designed in any suitable manner and optionally comprise any suitable actuators which can be used
- the actuator unit is adapted to exert in an operating condition exclusively to the main extension plane inclined tilting torque on the optical element. Additionally or alternatively, the actuator unit may be configured to exert exclusively in one operating state a tilting moment on the optical element which extends transversely, in particular perpendicularly, to the tilting moment extending inclined to the main extension plane.
- the present invention further relates to an optical module, in particular a
- Facet mirror with at least one optical unit according to the invention.
- This can be the above in connection with the optical unit according to the invention realize variants and advantages described to the same extent, so that reference is made in this respect to the above statements.
- the optical units can in principle be designed as separate units which are connected to one another in a suitable manner. In preferred variants, however, components are provided which share a plurality of optical units.
- the support units of a plurality of optical units have a common base element.
- any (reflective and / or refractive and / or diffractive) optical elements can be considered for the optical element.
- the optical element is preferably a facet element having an optically active surface, wherein the optically active surface is in particular an area of 0.1 mm 2 to 200 mm 2 , preferably 0.5 mm 2 to 100 mm 2 , more preferably 1 , 0 mm 2 to 50 mm 2 , has.
- the optical module can in principle comprise any number of optical elements. Preferably 100 to 100,000, preferably 100 to 10,000, further
- faceted elements preferably 1,000 to 10,000, faceted elements provided.
- 50 to 10,000, preferably 100 to 7,500, more preferably 500 to 5,000, facet elements may be provided.
- the present invention further relates to an optical imaging device, in particular for microlithography, with a lighting device (102) having a first optical element group, an object device for receiving an object, a projection device with a second optical element group and an image device, wherein the illumination device for illuminating the Object is formed and the projection device is designed to project an image of the object on the image device.
- the illumination device and / or the projection device comprises an optical module according to the invention or at least one optical unit according to the invention.
- the present invention relates to a method for
- Facet mirror by means of a support device, wherein the optical element a, in particular elongated, optical surface which defines a main extension plane and a main extension direction in the main plane of extension.
- the optical element is tilted by a tilting moment is applied to the optical element.
- the tilting moment is inclined to the main extension plane, while the support unit tilting the optical surface through the
- Tilting moment defines a tilting axis for the optical surface, which is located substantially in the main plane of extension of the optical surface.
- the support unit preferably predetermines a tilting axis for the optical surface, which in the
- Main extension direction runs. Furthermore, at least two degrees of freedom of movement, in particular three, are preferred for defining the tilt axis
- a component of the tilting moment acting perpendicular to the main extension plane of the optical surface is preferably received by at least one guide unit of the support unit.
- the guide unit exerts a counter-moment on the optical element when the optical surface is tilted, the counter-torque being at least one part, in particular at least 75%, preferably at least 85%, more preferably 90% to 100%, perpendicular to the main extension plane of the optical Surface acting component of the tilting moment compensated.
- the tilting axis is a first tilt axis of the optical surface and the tilting moment a first tilting moment, wherein the support unit then under the action of a transverse, in particular perpendicular, extending to the first tilting moment second
- Tilting moment defines a transverse, in particular perpendicular, to the first tilting axis extending second tilt axis of the optical surface.
- the second tilt axis is preferably again substantially in the main plane of extension of the optical surface.
- Main extension plane inclined tilting moment applied to the optical element which transversely, in particular perpendicular to the inclined plane extending to the main extension plane extending.
- the present invention relates to an optical imaging method
- Projection device with a second optical element group is generated an image of the object on an image device, wherein in the illumination device and / or the projection device, a method according to the invention for supporting an optical element is used.
- a method according to the invention for supporting an optical element is used.
- Figure 1 is a schematic representation of a preferred embodiment of an optical imaging device according to the invention comprising a preferred embodiment of an optical module according to the invention with a preferred embodiment of an optical unit according to the invention, in which a preferred embodiment of a method according to the invention for supporting an optical element is used.
- FIG. 2 is a schematic perspective view of the optical device according to the invention.
- Figure 3 is a schematic perspective view of the optical according to the invention.
- Figure 4 is a schematic sectional view through the part of the optical unit of Figure 3 (along line IV-IV of Figure 3).
- Figure 5 is a schematic perspective view of another preferred embodiment
- FIG. 6 is a schematic side view of the optical unit of FIG. 5.
- FIG. 7 is a schematic plan view of the optical unit of FIG. 5.
- FIG. 8 is a schematic side view of another preferred variant of the optical unit according to the invention.
- FIG. 9 is a schematic plan view of the optical unit of FIG. 8.
- FIGS. 1 to 4. A first embodiment of an optical imaging device 101 according to the invention will be described below with reference to FIGS. 1 to 4. to
- FIG. 1 is a schematic, not to scale representation of the optical
- Imaging device in the form of a microlithography device 101, which for
- the imaging device 101 comprises an illumination device 102 and an optical projection device 103, which is designed to image an image pattern formed on a mask 104.1 of a mask device 104 onto a substrate 105.1 in an imaging process a substrate device 105 to project.
- the illumination device 102 illuminates the mask 104.1 with a (not shown) illuminating light beam.
- the projection device 103 then receives the coming from the mask 104.1
- Projection light beam (which is indicated in Figure 1 by the line 101.1) and projects the image of the projection pattern of the mask 104.1 on the substrate 05.1, for example, a so-called wafer or the like.
- the illumination device 102 includes a (in Figure 1 only highly schematic
- optical module 106.1 As will be explained in more detail below, the optical module 106.1 is designed as a facet mirror.
- the optical projection device 103 comprises a further system of optical elements 107, which comprises a plurality of optical modules 107.1.
- the optical modules of the optical systems 106 and 107 are arranged along a folded optical axis 101. 1 of the imaging device 101.
- the imaging device 101 operates with light in the EUV range at a wavelength between 5 nm and 20 nm, more precisely at a wavelength of about 13 nm. Consequently, the optical elements in the illumination device 102 and the projection device 103 are exclusively reflective optical Elements formed. It is understood, however, that in other variants of the invention, which work with other wavelengths, also individually or in any combination of any kind of optical elements (eg refractive, reflective or diffractive optical elements) can be used. Furthermore, the projection device 103 can also be a further optical module according to the invention, for example in the form of another
- Facet mirror include.
- the facet mirror 106. 1 comprises a support structure in the form of a base structure 108 which supports a multiplicity of optical elements in the form of facet elements 109 which are each part of an optical unit 110 according to the invention (FIG and Figure 4 shows only a single optical unit 110).
- the respective optical unit 110 is designed so that the facet element 109 is actively adjustable for changing the illumination setting, as will be explained in more detail below.
- the facet elements 109 in the present example are in ten
- Facet elements 109 of the respective facet element group 106.2 all have a comparable coarse alignment to the main extension plane of the support structure 108 (xy plane). As can be seen from FIG. 2, the facet element groups 106.2 each differ with regard to this coarse alignment.
- Facet mirror 106.1 may also include significantly more facet elements 109 in reality. It is further understood that in other variants of the invention any number of (optional) optical elements may be supported on a respective support structure.
- facet devices preferably as many facet elements 109 as possible are provided in order to achieve the greatest possible homogenization of the light.
- facet devices for use in lithography in the EUV range preferably 100 to 100,000, preferably 100 to 10,000, more preferably 1,000 to 10,000, facet elements are provided.
- inspection purposes eg. B. in the mask inspection but can also less
- Facet elements are used. For such devices, preferably 50 to 0.000, preferably 100 to 7.500, more preferably 500 to 5000, facet elements are provided
- the facet elements 109 are in the respective one
- Facet element group 106.2 arranged so that between them a narrow gap G of a maximum of about 0.200 mm to 0.300 mm (ie about 200 ⁇ to 300 ⁇ ) width remains to achieve the lowest possible loss of radiant power. It is understood, however, that in other variants of the invention, any other arrangement of the optical elements supported by the support structure may be implemented depending on the optical requirements of the imaging device.
- the facet elements 109 depending on their design, in particular depending on the nature of the design of the optically active surface 109.1 be set even narrower, so the maximum gap G between the facet elements 109 may thus be less than 0.2 mm.
- the facet element 109 has a reflective and thus optically effective surface 109.1 (which is also referred to below as an optical surface 109.1).
- the reflective surface 109. 1 is formed on a front side of a facet body 109. 2 of the facet element 109 facing away from the base structure 108 or facing the illumination light bundle.
- the surface area of the optically effective surface 109.1 of the facet element 109 is preferably 0.1 mm 2 to 200 mm 2 , preferably 0.5 mm 2 to 100 mm 2 , more preferably 1, 0 mm 2 to 50 mm 2 .
- the surface area of the optically effective surface 109.1 is approximately 70 mm 2 .
- the optically effective surface 109.1 is furthermore substantially planar.
- an optical surface 109.1 elongated, narrow and generally arcuate outer contour.
- the optical surface 109.1 in the main extension direction D E has a first maximum dimension, while it has a second maximum dimension perpendicular to the main extension direction DME, wherein the second maximum dimension in the present example is about 6% of the first maximum dimension. It is understood, however, that in other variants, other ratio may be selected.
- Particularly favorable constellations arise when the second maximum dimension is less than 10%, preferably less than 5%, more preferably 0.2% to 2%, more preferably 0.5% to 1%, of the first maximum dimension,
- the outer contour of the optical surface 109.1 further defines a
- Main extension direction DME and a main extension plane PME which in the present example each inclined to the main extension plane 108.1 of the base structure 108 (wherein the inclination angle in the present example is about 12 °).
- the main direction of extension DME designates that direction in the
- Main extension plane PME in which the optical surface 109.1 has its maximum dimension.
- any other at least partially polygonal and / or at least partially curved outer contour may be provided.
- the optical unit 110 comprises, in addition to the facet element 109, a support device 111, via which the facet element 109 is supported on the base structure 108.
- the support device 111 includes a passive Support unit 112, which sits on the base structure 108 and initiates the entire weight of the facet element 109 in this base structure 108, and an actuator unit 113 which is adapted to tilt the facet element 109 and thus the optical surface 109.1.
- the support unit 112 comprises a series of support elements in the form of leaf springs 112.1 to 112.4, which in each case form an elastically deformable section of the support unit 112 and whose mode of operation will be explained in more detail below.
- the facet body 109.2 is first connected to a head element 112.5 of the support unit 112. Between the head element 112.5 and an intermediate element 112.6, the first two are kinematically parallel to each other (in a supporting direction)
- Leaf springs 112.1 and 112.2 arranged. Between the intermediate element 112.6 and a base element 1 12.7, the two second leaf springs 12.3 and 2.4 are arranged kinematically parallel to one another (in the supporting direction). Finally, the base member 112.7 is substantially rigidly connected to the base structure 108 in any suitable manner.
- the support unit 12 is formed in the present example as a monolithic unit made of a suitable material. It is understood, however, that in other variants of the invention, a differential construction may be selected in which at least parts of the support unit may be made of separately connected to each other in a suitable manner.
- the actuator unit 113 comprises an actuator 113.1 (shown only very schematically) and a rod-shaped actuating element 113.2.
- the actuator 113.1 is mounted on the side of the base structure 108 facing away from the facet element 09 such that it can interact with the actuating element 113.2.
- the actuator 113.2 is mounted on the side of the base structure 108 facing away from the facet element 09 such that it can interact with the actuating element 113.2.
- the actuator 113.1 exerts a first force F1 (running parallel to the x-axis) and, in a second operating state of FIG.
- Imaging device 101 a (parallel to the y-axis) second force F2 on the free end of the control element 1 13.2 off.
- the two forces F1 and F2 are substantially orthogonal to each other in the present example and lie in a plane which in the
- the first force F1 generates a first tilting moment M1 via the adjusting element 113.2 in the region of the optical surface 109.1
- the second force F2 generates a second tilting moment M2 via the adjusting element 113.2 in the region of the optical surface 109.1 generated.
- the two tilting moments M1 and M2 lie in a plane which runs essentially parallel to the main extension plane 108.1 of the basic structure 108.
- Tilting moment M1 results in a parasitic component MP1, which is perpendicular to the main plane of extent PME.
- Transmission loss loss of light output about 1 1%.
- the support unit 1 12 is formed in the present example, when tilting the optical surface 109.1 through the
- the first tilt axis TA1 can basically be oriented almost arbitrarily within the main extension plane PME. In the present example, however, a particularly dense packing or closely adjacent arrangement of the facet elements 109 is achieved in that the support unit 12 defines a first tilt axis TA1, which runs essentially parallel to the main extension direction DME of the optical surface 109.1.
- Facet element may not prevent certain parasitic movements during tilting, which force appropriate column between the
- the first tilt axis TA1 lies substantially on the optical surface 109.1 because of the planar design of the optical surface 109.1. This results in particularly low parasitic movements when tilted by the first
- Movements are preferably provided that the first tilt axis intersects or tangent to the optical surface in at least one tilt axis.
- the first tilting axis for the optical surface then lies in the tangential plane of the optical surface which defines it in the tilting axis point. This results in such cases particularly favorable kinematic conditions with the least possible parasitic movements.
- the tilting axis can in principle also run at a certain distance from the optical surface. Although this produces parasitic movements, it can be particularly useful if synchronous parasitic movements of adjacent facet elements can be followed, so that despite the parasitic movements, a dense packing of the facet elements is possible.
- the two first leaf springs 112.1 and 112.2 are shown as thin (under the weight of the
- Facet member 109 resulting load substantially flat spring elements are formed, which are arranged inclined to each other so that their
- Main extension planes 112.8 and 112.9 intersect in the first tilt axis TA1 and thus define the first tilt axis TA1. It should be noted in this connection that the fact that two mutually inclined leaf springs are in the intersection of their
- Main extension planes define such a tilt axis, is well known, so it should not be discussed here at this point.
- first tilting axis TA1 is thereby defined has the advantage that the first leaf springs 112.1 and 12.2 are subject to a thrust load in their respective main extension plane 112.8 and / or 12.9 due to the parasitic component MP1 of the tilting moment M1. Since the two first leaf springs 112.1 and 112.2 naturally have a high shear stiffness, the pair of leaf springs 112.1, 112.2 can receive the parasitic component MP1 without significant deformation of the leaf springs 112.1 and 112.2 or compensate by a corresponding elastic counter-moment. In other words, the leaf springs 112.1 and 12.2 restrict in particular the
- this design leads to the fact that the tilting moment M1 almost exclusively leads to a tilting of the optical surface 109.1 about the first tilting axis despite its inclination to the main extension plane PME, while parasitic motions caused by the parasitic component MP1 are almost completely due to the high shear stiffness of the leaf springs 112.1 to 112.4.
- the two second leaf springs 112.3 and 112.4 are formed in an analogous manner as thin, substantially flat spring elements which are arranged inclined to each other such that their main extension planes 112.10 and 112.11 in the second tilt axis Cut TA2 and thus define the second tilt axis TA2.
- the second tilting moment M2 lies in the main extension plane PME of the optical surface 109.1, so that it has no parasitic component perpendicular to the main extension plane PME. It is understood, however, that in other variants, if appropriate, an inclination of the second tilting moment M2 for
- Main extension plane PME can be given.
- an analogous design to the first leaf springs 112.1 and 112.2 can then also be selected in the case of the second leaf springs 12.3 and 112.4 in order to accommodate or compensate for such a parasitic component MP2 of the second tilting moment M2 and thereby corresponding parasitic movements To avoid tilting the optical surface 109.1 by the second tilting moment M2.
- the transmission loss due to the still required gap G between the facet elements 109 is about 4.5%.
- Transmission loss of about 11%) achieve a reduction in transmission loss of the order of about 60% due to the denser packing of the facet elements 109.
- the geometry of the support elements can in principle be selected in any suitable manner in order to define the respective tilting axis TA1 or TA2 in the desired position.
- Dynamically advantageous variants result if at least the leaf springs 12.1 to 112.4 are designed as thin elongate spring elements having a length dimension along their longitudinal axis and a maximum thickness dimension perpendicular to their leaf spring main extension plane 112.8 to 112.11, the maximum thickness dimension being less than 4%, preferably less than 2%, more preferably from 0.2% to 1%, of the length dimension.
- the maximum thickness dimension of the leaf springs 112.1 to 112.4 is each about 5% of the length dimension.
- leaf springs 112.1 to 112.4 can basically have any outer contour, as long as the leaf spring main extension planes 112.8 to 112.11 intersect within the leaf spring pairs in the respective tilt axis TA1 or TA2.
- the leaf springs 112.1 to 112.4 can basically have any outer contour, as long as the leaf spring main extension planes 112.8 to 112.11 intersect within the leaf spring pairs in the respective tilt axis TA1 or TA2.
- the present example is a particularly easy to produce
- Head element 112.5 and the intermediate element 112.6 abut, and the respective pair of the sides of the leaf springs 112.3 and 112.4, which different abut intermediate element 112.6 and the base element 112.7.
- Mounting step mounted on the base structure 108 by the optical units 10 are attached to the base structure 108 in the configuration described above.
- the desired tilting of the optical surfaces 109.1 of the facet elements 109 to be adjusted then takes place.
- the tilting can take place temporally parallel and / or to the image.
- the tilting of the facet elements 109 in certain variants of the invention can be restricted exclusively to tilting about one of the two tilt axes TA1 or TAI.
- the actuator 113.1 may be designed such that it can generate either the first force F1 or the second force F2. Likewise, of course, it can also be provided that he can only produce the first force F1. Of course, in certain variants it can also be provided that the actuator 113.1 can generate both forces F1 and F2 at the same time.
- a particularly simply constructed actuator results in this case if a separate actuator unit is provided for the respective force F1 and F2.
- This can be simple Actuate linear actuators. It is understood, however, that in other variants of
- actuators may be used.
- actuators can be used, which directly generate a corresponding moment.
- optical module 206.1 A further preferred embodiment of the optical module 206.1 according to the invention with a further preferred embodiment of the optical unit 210 according to the invention is described below with reference to FIGS. 1, 2 and 5 to 7.
- the optical module 206.1 can be used instead of the optical module 106.1 in the imaging device 101 (as indicated in FIG. 2 by the facet elements 209 shown in dashed lines) and corresponds in its basic design and mode of operation to the optical module from FIGS. 3 and 4, so that Here only the differences should be discussed.
- identical components are provided with the same reference numerals, while similar ones
- the facet element 209 has an essentially flat reflecting optical surface 209.1, whose surface area, however, is again approximately 70 mm 2 .
- the optical surface 109.1 on an elongated and substantially rectangular outer contour which in turn defines a main direction of extension DME and a main plane of extent PME, which in the present example in each case to the main extension plane 108.1 of
- Base structure 108 inclined (wherein the inclination angle is also about 12 ° in the present example).
- the optical surface has an elongated, slender outer contour, in which the second maximum dimension again amounts to approximately 6% of the first maximum dimension.
- a further difference from the optical module 106.1 from FIGS. 3 and 4 is the design of the support device 211, in particular the support unit 212.
- the support unit 212 As can be seen from FIGS. 5 to 7, in the present example instead of the two pairs of leaf springs three support elements 212.12 are provided which are mutually arranged kinematically parallel in the manner of a tripod between the facet body 209.2 of the facet element 209 and a base element 209.7, which sits firmly on the base structure 108.
- the support unit 212 further comprises a guide unit 215 for defining the tilt axes TA1 and TA2, wherein the guide unit is arranged kinematically parallel to the support elements 212.12 between the base element 2.7 and the facet element 209.
- the support elements 212.12 in the present example are elastically deformable struts which are formed by simple slender and rectilinear bar springs which are in the
- the struts 212.12 are designed in such a way that, in the state loaded solely by the weight force of the facet element 209, they absorb about 98% of the weight force of the facet element 209 and introduce it into the base element 212.7. This makes it possible to achieve particularly simple designs, which also have a simple integration of the passive compensation of the parasitic component of the
- the maximum transverse dimension of the slender struts 212.12 in the present example is about KLMN% of their length dimension, resulting in a light and stiff, advantageous under dynamic aspects designs. In other variants of the invention, however, a different degree of slimming may also be provided. Preferably, the maximum transverse dimension is less than 4%, preferably less than 2%, more preferably 0.3% to 1.8%, of the length dimension. As a result, particularly advantageous designs can be achieved under dynamic aspects.
- the strut longitudinal axes 212.13 of the struts 212.12 are inclined in this example to each other such that they intersect a point RP of the first tilt axis TA1, which lies on the optical surface 209.1. Accordingly, (in a well-known manner) on the struts 212.12 a designed in the manner of a ball joint connection of the
- Facet element 209 realized on the base member 212.7 and thus on the base structure 108.
- the kinematically arranged parallel guide unit 215 supplements this connection in the manner of a ball joint through the struts 212.12 to the desired orientation of
- the guide unit 215 has two guide elements 215.1 connected in an articulated manner to the facet element 209 and the base element 212.7, which are arranged in a transverse direction TD of the facet element 209 on opposite sides of the facet element 209, in order to generate a corresponding counter-moment which the parasitic component MP1 of the Tilting moment M1 absorbs or compensates.
- Transverse direction TD lies in the main extension plane PME and runs perpendicular to the main direction of extension DME.
- connection of the respective guide element 215.1 with the facet element 209 takes place in each case via the free end of a transverse strut 215.2, which is essentially rigidly connected to the facet element 209 and extends in the transverse direction TD.
- the connection to the base element 212.7 takes place in each case via the free end of a
- the guide elements 2 5.1 are each formed in the present example in the manner of a leaf spring. It is understood, however, that in other variants of the invention, any other design of the guide elements 215.1 may be provided, as long as the desired counter-torque to the parasitic via the guide elements 215.1
- Component MP1 of the tilting moment M1 is applied.
- the guide elements 215.1 may be formed in other variants as simple, articulated rod elements.
- the respective guide element 215.1 defines a first articulation point 215.4 on the facet element 209 and a second articulation point 215.5 on the base element 212.7 (more precisely on the pillar element 215.3).
- the connecting line 215.6 between the first articulation point 215.4 and the second articulation point 215.5 extends in a plane extending perpendicular to the main extension plane PME and parallel to the first tilting moment M1.
- the connecting line 215.6 runs around a first
- the first articulation point 215.4 in the transverse direction TD is one at a time
- Anschtician 215.4 and the second pivot point 215.5 are spaced apart by a pivot distance APD from each other.
- the articulation point distance APD and the fulcrum distance RPD, the compensation effect or the compensation movement can be adjusted, which results in tilting the optical surface 209.1 to the first tilt axis TA1.
- the adjustment is made such that the tilting axis TA1 collinear with the main extension direction DME in the
- Main extension plane PME is located. It is provided in particular that the
- Tilt angle AM or AI2 via spacers 215.7 between the respective
- another alignment of the first tilt axis TA1 in particular adapted to the geometry and / or orientation of the facet element 209, can be carried out in order to minimize or impede the parasitic movements during tilting of the optical surface 209.1 to customize a desired course.
- the first inclination angle is preferably 1 0 to 30 °, preferably 5 ° to 20 °, more preferably 8 ° to 15 °, while additionally or alternatively the second
- Tilt angle -10 ° to 10 ° preferably -5 ° to 5 °, more preferably 0 ° to 2 °, can be. This can be achieved in a particularly simple manner at least partially compensation of the parasitic component MP1 of the tilting moment M1.
- the guide unit 215 restricts three degrees of freedom of movement, namely two translational degrees of freedom (in the x direction and in the y direction) and one rotational degree of freedom (around the z axis), and thus also the rotational degree of freedom perpendicular to the main extension plane PME of the optical surface 209.1 to compensate for the corresponding parasitic component MP1 of the overturning moment M1.
- the parasitic component MP1 of the overturning moment M1 can be compensated, if necessary, only partially for certain variants, if appropriate also a certain parasitic movement is permitted in order, if appropriate, for the parasitic movements of others, adjacent
- the guide unit 215 is then designed such that when tilting the optical surface 209.1 by the tilting moment M1 a counter-momentum CM exerts on the facet element 209, the at least one part, in particular at least 75%, preferably at least 85%, more preferably 90% to 100%) compensating the parasitic component MP1 of the first tilting moment M1.
- the second force F2 again generates a second one in the region of the optical surface 109.1 via the setting element 13.2
- Main extension plane PME runs, but lies between the pivot point RP and the axis defined by the two first pivot points 215.4. This results in special loads for the struts 212.12, so that the present example is preferred for
- optical module 306.1 A further preferred embodiment of the optical module 306.1 according to the invention with a further preferred embodiment of the optical unit 310 according to the invention is described below with reference to FIGS. 1, 2, 6 and 9.
- the optical module 306.1 instead of the optical module 106.1 in the
- Imaging device 101 can be used and corresponds in its basic design and operation of the optical module of Figures 5 to 7, so that only the differences should be discussed here.
- identical components are provided with the same reference numerals, while similar ones
- a single, substantially plate-shaped pillar element 315.3 is provided, which is articulated via a trained as a hinge joint solid joint 315.8 on the base member 212.7.
- the guide unit 315 for defining the tilt axes TA1 and TA2 restricts only two degrees of freedom of movement in the present example, namely a translational degree of freedom (in the x direction) and a rotational degree of freedom (about the z axis), thus also the rotational degree of freedom perpendicular to Main extension plane PME of the optical surface 209.1 limited to compensate for the corresponding parasitic component MP1 of the tilting moment M1.
- this also achieves, by the way, that the second force F2 generates a second tilting moment M2 in the region of the optical surface 109.1 via the adjusting element 113.2, wherein the second tilting moment M2 or the second tilting moment M2
- Tilting axis TA2 caused by this connection via the guide unit 315 now substantially in the main extension plane PME and that passes through the pivot point RP, so that parasitic movements when tilting over the second tilting moment M2 are largely excluded.
- the so-called mask inspection come to use, in which the masks used for microlithography are examined for their integrity, etc.
- a sensor unit for example, which detects the image of the projection pattern of the mask 104.1 (for further processing), then appears.
- This mask inspection may then be performed at substantially the same wavelength as used in the later microlithography process. Likewise, however, any deviating wavelengths may be used for the inspection.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Lenses (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2017506414A JP6728131B2 (ja) | 2014-08-05 | 2015-07-28 | 光学素子の傾斜 |
CN201580042004.9A CN106662726B (zh) | 2014-08-05 | 2015-07-28 | 光学元件的倾斜 |
US15/414,193 US10215953B2 (en) | 2014-08-05 | 2017-01-24 | Tilting an optical element |
US16/281,952 US10495845B2 (en) | 2014-08-05 | 2019-02-21 | Tilting an optical element |
Applications Claiming Priority (2)
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DE102014215452.9A DE102014215452A1 (de) | 2014-08-05 | 2014-08-05 | Verkippen eines optischen Elements |
DE102014215452.9 | 2014-08-05 |
Related Child Applications (1)
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US15/414,193 Continuation US10215953B2 (en) | 2014-08-05 | 2017-01-24 | Tilting an optical element |
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WO2016020226A1 true WO2016020226A1 (de) | 2016-02-11 |
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PCT/EP2015/067266 WO2016020226A1 (de) | 2014-08-05 | 2015-07-28 | Verkippen eines optischen elements |
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US (2) | US10215953B2 (de) |
JP (2) | JP6728131B2 (de) |
CN (1) | CN106662726B (de) |
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WO (1) | WO2016020226A1 (de) |
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DE102014215452A1 (de) | 2014-08-05 | 2016-04-07 | Carl Zeiss Smt Gmbh | Verkippen eines optischen Elements |
DE102015213619A1 (de) * | 2015-07-20 | 2016-07-21 | Carl Zeiss Smt Gmbh | Spiegelfacettenanordnung |
DE102016217479A1 (de) * | 2016-09-14 | 2017-09-14 | Carl Zeiss Smt Gmbh | Optisches modul mit verkippbaren optischen flächen |
DE102017120678A1 (de) * | 2017-09-07 | 2019-03-21 | Blickfeld GmbH | Scaneinheit mit Robustheit gegenüber Schock |
DE102022203438B4 (de) * | 2022-04-06 | 2023-12-07 | Carl Zeiss Smt Gmbh | Optische Anordnung, optisches Modul, optische Abbildungseinrichtung und -verfahren, Verfahren zum Abstützen eines optischen Elements, mit aktiv verkippbarem optischem Element |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1923985A1 (de) * | 2005-09-07 | 2008-05-21 | Alps Electric Co., Ltd. | Stellglied und holographieeinrichtung damit |
DE102012223034A1 (de) * | 2012-12-13 | 2013-12-12 | Carl Zeiss Smt Gmbh | Beleuchtungssystem einer Mikrolithographischen Projektionsbelichtungsanlage |
US20140022658A1 (en) * | 2011-04-14 | 2014-01-23 | Carl Zeiss Smt Gmbh | Facet mirror device |
Family Cites Families (10)
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DE10205425A1 (de) | 2001-11-09 | 2003-05-22 | Zeiss Carl Smt Ag | Facettenspiegel mit mehreren Spiegelfacetten |
JP4532545B2 (ja) * | 2004-06-29 | 2010-08-25 | カール・ツァイス・エスエムティー・アーゲー | 光学素子のための位置決めユニット及び調節デバイス |
WO2009024192A1 (en) * | 2007-08-23 | 2009-02-26 | Carl Zeiss Smt Ag | Optical element module with minimized parasitic loads |
DE102008009600A1 (de) | 2008-02-15 | 2009-08-20 | Carl Zeiss Smt Ag | Facettenspiegel zum Einsatz in einer Projektionsbelichtungsanlage für die Mikro-Lithographie |
DE102009024870A1 (de) * | 2008-06-10 | 2009-12-31 | Carl Zeiss Smt Ag | Optische Einrichtung mit einstellbarer Kraftwirkung auf ein optisches Modul |
DE102008049586A1 (de) | 2008-09-30 | 2010-04-08 | Carl Zeiss Smt Ag | Feldfacettenspiegel zum Einsatz in einer Beleuchtungsoptik einer Projektionsbelichtungsanlage für die EUV-Mikrolithographie |
DE102008049585A1 (de) * | 2008-09-30 | 2010-04-08 | Carl Zeiss Smt Ag | Feldfacettenspiegel zum Einsatz in einer Beleuchtungsoptik einer Projektionsbelichtungsanlage für die EUV-Mikrolithographie |
DE102011004615A1 (de) | 2010-03-17 | 2011-09-22 | Carl Zeiss Smt Gmbh | Beleuchtungsoptik für die Projektionslithografie |
NL2011456A (en) | 2012-10-15 | 2014-04-16 | Asml Netherlands Bv | Actuation mechanism, optical apparatus, lithography apparatus and method of manufacturing devices. |
DE102014215452A1 (de) * | 2014-08-05 | 2016-04-07 | Carl Zeiss Smt Gmbh | Verkippen eines optischen Elements |
-
2014
- 2014-08-05 DE DE102014215452.9A patent/DE102014215452A1/de not_active Ceased
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2015
- 2015-07-28 JP JP2017506414A patent/JP6728131B2/ja active Active
- 2015-07-28 WO PCT/EP2015/067266 patent/WO2016020226A1/de active Application Filing
- 2015-07-28 CN CN201580042004.9A patent/CN106662726B/zh active Active
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- 2017-01-24 US US15/414,193 patent/US10215953B2/en active Active
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2019
- 2019-02-21 US US16/281,952 patent/US10495845B2/en active Active
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2020
- 2020-07-01 JP JP2020114278A patent/JP7015343B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1923985A1 (de) * | 2005-09-07 | 2008-05-21 | Alps Electric Co., Ltd. | Stellglied und holographieeinrichtung damit |
US20140022658A1 (en) * | 2011-04-14 | 2014-01-23 | Carl Zeiss Smt Gmbh | Facet mirror device |
DE102012223034A1 (de) * | 2012-12-13 | 2013-12-12 | Carl Zeiss Smt Gmbh | Beleuchtungssystem einer Mikrolithographischen Projektionsbelichtungsanlage |
Also Published As
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CN106662726A (zh) | 2017-05-10 |
US20190243089A1 (en) | 2019-08-08 |
JP2020170192A (ja) | 2020-10-15 |
JP6728131B2 (ja) | 2020-07-22 |
US10215953B2 (en) | 2019-02-26 |
JP2017524160A (ja) | 2017-08-24 |
CN106662726B (zh) | 2020-08-25 |
JP7015343B2 (ja) | 2022-02-02 |
US10495845B2 (en) | 2019-12-03 |
DE102014215452A1 (de) | 2016-04-07 |
US20170131518A1 (en) | 2017-05-11 |
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