Patents by Inventor Wilhelm Ulrich
Wilhelm Ulrich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10481500Abstract: An imaging optical system has a plurality of mirrors which image an object field in an object plane in an image field in an image plane. The imaging optical system has a pupil obscuration. The last mirror in the beam path of the imaging light between the object field and the image field has a through-opening for the passage of the imaging light. A penultimate mirror of the imaging optical system in the beam path of the imaging light between the object field and the image field has no through-opening for the passage of the imaging light. The result is an imaging optical system that provides a combination of small imaging errors, manageable production and a good throughput for the imaging light.Type: GrantFiled: August 3, 2011Date of Patent: November 19, 2019Assignee: Carl Zeiss SMT GmbHInventors: Hans-Juergen Mann, Wilhelm Ulrich, Erik Loopstra, David R. Shafer
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Publication number: 20190072861Abstract: A system includes a microlithography projection objective configured to image radiation from an object plane to an image plane along a radiation path. The microlithography projection objective has an optical axis. The microlithography projection objective includes a plurality of optical elements along the optical axis of the projection objective. The plurality of optical elements includes an optical element. During use of the system, a liquid is present. The system is configured so that, during use of the system, a distance between the optical element and the image plane is varied to reduce at least one aberration induced by a change in a temperature in the system.Type: ApplicationFiled: April 30, 2018Publication date: March 7, 2019Inventors: Ulrich Loering, Vladan Blahnik, Wilhelm Ulrich, Daniel Kraehmer, Norbert Wabra
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Patent number: 10073256Abstract: An apparatus for imaging a sample arranged in a first medium in an object plane. The apparatus includes an optical transmission system which images the sample in the object plane in an intermediate image in an intermediate image plane. The object plane and the intermediate image plane form an angle not equal to 90° with an optical axis of the transmission system. The apparatus further comprises an optical imaging system having an objective. The object plane may be imaged on a detector without distortion. The optical transmission system is symmetrical with respect to a pupil plane, the object plane, and the intermediate image plane to satisfy the Scheimpflug condition. The intermediate image lies in a second medium having a refractive index virtually identical to that of the first medium. A lens group of a subsystem arranged closest to the sample or intermediate image comprises at least one catadioptric assembly.Type: GrantFiled: May 27, 2014Date of Patent: September 11, 2018Assignees: CARL ZEISS MICROSCOPY GMBH, CARL ZEISS AGInventors: Wolfgang Singer, Ralf Wolleschensky, Wilhelm Ulrich, David Shafer, Artur Degen
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Patent number: 9964859Abstract: A lithography projection objective for imaging a pattern in an object plane onto a substrate in an image plane. The projection objective comprises a multiplicity of optical elements along an optical axis. The optical elements comprise a first group of optical elements following the object plane, and a last optical element, following the first group and next to the image plane. The projection objective is tunable or tuned with respect to aberrations for the case that the volume between the last optical element and the image plane is filled by an immersion medium with a refractive index substantially greater than 1. The position of the last optical element is adjustable in the direction of the optical axis. A positioning device is provided that positions at least the last optical element during immersion operation such that aberrations induced by disturbance are at least partially compensated.Type: GrantFiled: April 14, 2016Date of Patent: May 8, 2018Assignee: Carl Zeiss SMT GmbHInventors: Ulrich Loering, Vladan Blahnik, Wilhelm Ulrich, Daniel Kraehmer, Norbert Wabra
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Publication number: 20180031815Abstract: A projection objective configured to image an object field in an object plane into an image field in an image field plane includes a reflective unit, a first refractive unit, and a second refractive unit. An optical axis of the first refractive unit is parallel to but displaced from an optical axis of the second refractive unit. The reflective unit includes a first curved mirror and a second curved mirror. The second curved mirror is immediately downstream from the first curved mirror in a path of light from the object plane to the image plane. The projection objective is a microlithography projection objective.Type: ApplicationFiled: August 22, 2017Publication date: February 1, 2018Inventors: David Shafer, Wilhelm Ulrich, Aurelian Dodoc, Rudolf Murai Von Buenau, Hans-Juergen Mann, Alexander Epple
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Publication number: 20170363963Abstract: A catadioptric projection objective has a first objective part, defining a first part of the optical axis and imaging an object field to form a first real intermediate image. It also has a second, catadioptric objective part forming a second real intermediate image using the radiation from the first objective part. The second objective part has a concave mirror and defines a second part of the optical axis. A third objective part images the second real intermediate image into the image plane and defines a third part of the optical axis. Folding mirrors deflect the radiation from the object plane towards the concave mirror; and deflect the radiation from the concave mirror towards the image plane. The first part of the optical axis defined by the first objective part is laterally offset from and aligned parallel with the third part of the optical axis.Type: ApplicationFiled: June 30, 2017Publication date: December 21, 2017Inventors: Aurelian Dodoc, Wilhelm Ulrich, Alexander Epple
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Publication number: 20170343819Abstract: There is provided a display device with a holder that can be fitted on the head of a user and a first imaging optical system secured to the holder, which is formed to image an image generated in an image plane as a virtual image in such a way that, when the holder is fitted on his head, the user can perceive it with a first eye, wherein the first imaging optical system includes, as imaging element, precisely one first lens with a first and a second boundary surface, wherein the two boundary surfaces are each aspherically curved.Type: ApplicationFiled: November 24, 2015Publication date: November 30, 2017Inventors: Scott LERNER, Dietmar GAENGLER, Norbert KERWIEN, Wilhelm ULRICH
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Patent number: 9772478Abstract: A projection objective configured to image an object field in an object plane into an image field in an image field plane includes a reflective unit, a first refractive unit, and a second refractive unit. An optical axis of the first refractive unit is parallel to but displaced from an optical axis of the second refractive unit. The reflective unit includes a first curved mirror and a second curved mirror. The second curved mirror is immediately downstream from the first curved mirror in a path of light from the object plane to the image plane. The projection objective is a microlithography projection objective.Type: GrantFiled: April 2, 2015Date of Patent: September 26, 2017Assignee: Carl Zeiss SMT GmbHInventors: David Shafer, Wilhelm Ulrich, Aurelian Dodoc, Rudolf Murai von Buenau, Hans-Juergen Mann, Alexander Epple
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Patent number: 9726979Abstract: A catadioptric projection objective has a first objective part, defining a first part of the optical axis and imaging an object field to form a first real intermediate image. It also has a second, catadioptric objective part forming a second real intermediate image using the radiation from the first objective part. The second objective part has a concave mirror and defines a second part of the optical axis. A third objective part images the second real intermediate image into the image plane and defines a third part of the optical axis. Folding mirrors deflect the radiation from the object plane towards the concave mirror; and deflect the radiation from the concave mirror towards the image plane. The first part of the optical axis defined by the first objective part is laterally offset from and aligned parallel with the third part of the optical axis.Type: GrantFiled: March 30, 2015Date of Patent: August 8, 2017Assignee: Carl Zeiss SMT GmbHInventors: Aurelian Dodoc, Wilhelm Ulrich, Alexander Epple
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Publication number: 20160370709Abstract: A lithography projection objective for imaging a pattern in an object plane onto a substrate in an image plane. The projection objective comprises a multiplicity of optical elements along an optical axis. The optical elements comprise a first group of optical elements following the object plane, and a last optical element, following the first group and next to the image plane. The projection objective is tunable or tuned with respect to aberrations for the case that the volume between the last optical element and the image plane is filled by an immersion medium with a refractive index substantially greater than 1. The position of the last optical element is adjustable in the direction of the optical axis. A positioning device is provided that positions at least the last optical element during immersion operation such that aberrations induced by disturbance are at least partially compensated.Type: ApplicationFiled: April 14, 2016Publication date: December 22, 2016Inventors: Ulrich Loering, Vladan Blahnik, Wilhelm Ulrich, Daniel Kraehmer, Norbert Wabra
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Patent number: 9482961Abstract: A microlithography projection optical system is disclosed. The system can include a plurality of optical elements arranged to image radiation having a wavelength ? from an object field in an object plane to an image field in an image plane. The plurality of optical elements can have an entrance pupil located more than 2.8 m from the object plane. A path of radiation through the optical system can be characterized by chief rays having an angle of 3° or more with respect to the normal to the object plane. This can allow the use of face shifting masks as objects to be imaged, in particular for EUV wavelengths.Type: GrantFiled: September 25, 2014Date of Patent: November 1, 2016Assignee: Carl Zeiss SMT GmbHInventors: Hans-Juergen Mann, Wilhelm Ulrich
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Patent number: 9465300Abstract: In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements image radiation at a wavelength ? from an object plane to an image plane. At least one of the elements is a reflective element that has a rotationally-asymmetric surface positioned in a path of the radiation. The rotationally-asymmetric surface deviates from a rotationally-symmetric reference surface by a distance of about ? or more at one or more locations of the rotationally-asymmetric surface.Type: GrantFiled: April 3, 2012Date of Patent: October 11, 2016Assignee: Carl Zeiss SMT GmbHInventors: Hans-Juergen Mann, Wilhelm Ulrich, Marco Pretorius
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Publication number: 20160274343Abstract: A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective has a first, refractive objective part for imaging the pattern provided in the object plane into a first intermediate image; a second objective part including at least one concave mirror for imaging the first Intermediate imaging into a second intermediate image; and a third, refractive objective part for imaging the second intermediate imaging onto the image plane; wherein the projection objective has a maximum lens diameter Dmax, a maximum image field height Y?, and an image side numerical aperture NA; wherein COMP1=Dmax/(Y?·NA2) and wherein the condition COMP1<10 holds.Type: ApplicationFiled: November 23, 2015Publication date: September 22, 2016Inventors: David R. Shafer, Wilhelm Ulrich, Aurelian Dodoc, Rudolf Murai Von Buenau, Hans-Juergen Mann, Alexander Epple, Susanne Beder, Wolfgang Singer
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Publication number: 20160131884Abstract: An apparatus for imaging a sample arranged in a first medium in an object plane. The apparatus includes an optical transmission system which images the sample in the object plane in an intermediate image in an intermediate image plane. The object plane and the intermediate image plane form an angle not equal to 90° with an optical axis of the transmission system. The apparatus further comprises an optical imaging system having an objective. The object plane may be imaged on a detector without distortion. The optical transmission system is symmetrical with respect to a pupil plane, the object plane, and the intermediate image plane to satisfy the Scheimpflug condition. The intermediate image lies in a second medium having a refractive index virtually identical to that of the first medium. A lens group of a subsystem arranged closest to the sample or intermediate image comprises at least one catadioptric assembly.Type: ApplicationFiled: May 27, 2014Publication date: May 12, 2016Applicants: Carl Zeiss Microscopy GmbH, Carl Zeiss AGInventors: Wolfgang SINGER, Ralf WOLLESCHENSKY, Wilhelm ULRICH, David SHAFER, Artur DEGEN
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Publication number: 20160131980Abstract: A microlithographic projection exposure apparatus contains an illumination system (12) for generating projection light (13) and a projection lens (20; 220; 320; 420; 520; 620; 720; 820; 920; 1020; 1120) with which a reticle (24) that is capable of being arranged in an object plane (22) of the projection lens can be imaged onto a light-sensitive layer (26) that is capable of being arranged in an image plane (28) of the projection lens. The projection lens is designed for immersion mode, in which a final lens element (L5; L205; L605; L705; L805; L905; L1005; L1105) of the projection lens on the image side is immersed in an immersion liquid (34; 334a; 434a; 534a). A terminating element (44; 244; 444; 544; 644; 744; 844; 944; 1044; 1144) that is transparent in respect of the projection light (13) is fastened between the final lens element on the image side and the light-sensitive layer.Type: ApplicationFiled: September 14, 2015Publication date: May 12, 2016Inventors: Aurelian Dodoc, Karl-Heinz Schuster, Joerg Mallmann, Wilhelm Ulrich, Hans-Juergen Rostalski
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Patent number: 9316922Abstract: A lithography projection objective for imaging a pattern in an object plane onto a substrate in an image plane. The projection objective comprises a multiplicity of optical elements along an optical axis. The optical elements comprise a first group of optical elements following the object plane, and a last optical element, following the first group and next to the image plane. The projection objective is tunable or tuned with respect to aberrations for the case that the volume between the last optical element and the image plane is filled by an immersion medium with a refractive index substantially greater than 1. The position of the last optical element is adjustable in the direction of the optical axis. A positioning device is provided that positions at least the last optical element during immersion operation such that aberrations induced by disturbance are at least partially compensated.Type: GrantFiled: June 26, 2014Date of Patent: April 19, 2016Assignee: Carl Zeiss SMT GmbHInventors: Ulrich Loering, Vladan Blahnik, Wilhelm Ulrich, Daniel Kraehmer, Norbert Wabra
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Patent number: 9304407Abstract: In general, in one aspect, the invention features an objective arranged to image radiation from an object plane to an image plane, including a plurality of elements arranged to direct the radiation from the object plane to the image plane, wherein the objective has an image side numerical aperture of more than 0.55 and a maximum image side field dimension of more than 1 mm, and the objective is a catoptric objective.Type: GrantFiled: December 12, 2013Date of Patent: April 5, 2016Assignee: Carl Zeiss SMT GmbHInventors: Hans-Juergen Mann, David Shafer, Wilhelm Ulrich
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Patent number: 9182578Abstract: An imaging optical system has a plurality of mirrors, which image an object field in an object plane into an image field in an image plane. A reflection face of at least one of the mirrors is configured as a free form face which cannot be described by a rotationally symmetrical function. The object field has an aspect ratio greater than 1. A ratio of a minimal and a maximal transverse dimension of the object field can be less than 0.9.Type: GrantFiled: December 15, 2011Date of Patent: November 10, 2015Assignee: Carl Zeiss SMT GmbHInventors: Hans-Juergen Mann, Johannes Zellner, Aurelian Dodoc, Marco Pretorius, Christoph Menke, Wilhelm Ulrich, Martin Endres
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Patent number: 9146475Abstract: A projection exposure system includes an illumination system configured to illuminate a mask with radiation. The projection exposure system also includes a projection objective configured to project an image of a pattern of the mask onto a radiation-sensitive substrate. The projection exposure system further includes an angle-selective filter arrangement arranged at or close to a field surface of the projection objective in a projection beam path optically downstream of the object surface. The angle-selective filter arrangement is effective to filter radiation incident on the filter arrangement according to an angle-selective filter function.Type: GrantFiled: March 5, 2013Date of Patent: September 29, 2015Assignee: Carl Zeiss SMT GmbHInventors: Paul Gräupner, Olaf Conradi, Christoph Zaczek, Wilhelm Ulrich, Helmut Beierl, Toralf Gruner, Volker Graeschus
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Patent number: 9134618Abstract: A catadioptric projection objective has a first objective part, defining a first part of the optical axis and imaging an object field to form a first real intermediate image. It also has a second, catadioptric objective part forming a second real intermediate image using the radiation from the first objective part. The second objective part has a concave mirror and defines a second part of the optical axis. A third objective part images the second real intermediate image into the image plane and defines a third part of the optical axis. Folding mirrors deflect the radiation from the object plane towards the concave mirror; and deflect the radiation from the concave mirror towards the image plane. The first part of the optical axis defined by the first objective part is laterally offset from and aligned parallel with the third part of the optical axis.Type: GrantFiled: December 30, 2013Date of Patent: September 15, 2015Assignee: Carl Zeiss SMT GmbHInventors: Aurelian Dodoc, Wilhelm Ulrich, Alexander Epple