Patents by Inventor Karl Heinz Schuster

Karl Heinz Schuster 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).

  • Publication number: 20050068499
    Abstract: 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: Application
    Filed: August 13, 2004
    Publication date: March 31, 2005
    Inventors: Aurelian Dodoc, Karl-Heinz Schuster, Jorg Mallmann, Wilhelm Ulrich, Hans-Jurgen Rostalski
  • Patent number: 6867923
    Abstract: A projection lens (3), in particular for microlithography, is provided with an object plane (7), with an image plane (9), with a lens arrangement (4) and with at least one gas chamber filled with gas or through which gas flows. The gas chamber is constructed as an approximately plane-parallel manipulation chamber (13). The refractive index can be varied in the manipulation chamber (13) by pressure changes and/or changes in gas composition.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: March 15, 2005
    Assignee: Carl-Zeiss-Shiftung
    Inventors: Wolfgang Singer, Karl-Heinz Schuster
  • Patent number: 6856379
    Abstract: A polarizer suitable for transforming incident linearly polarized or circularly polarized light into exiting radially or tangentially polarized light with virtually no transmission losses has, in one of its embodiments, a plate fabricated from birefringent material on whose entrance and exit faces small zones (11, 12) with deflecting structures (8, 9) in the form of gratings or Fresnel surfaces have been created. The crystal axis (5) of said birefringent material is aligned parallel to the incident light beam. Said deflecting structures deflect light along a transmission direction (13) that is inclined with respect to said crystal axis (5), causing a phase shift between the field components of the transmitted light.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: February 15, 2005
    Assignee: Carl Zeiss SMT AG
    Inventor: Karl-Heinz Schuster
  • Patent number: 6855380
    Abstract: A method is described for the production of optical components, particularly of crystalline base material, with elevated stability and an optically active three-dimensional shape, which is defined by its surfaces, of high fit accuracy, by shaping the base material into a blank with a desired three-dimensional shape, and applying a covering layer to the surface of the thus-formed three-dimensional shape and the fit accuracy is obtained by abrasion of the covering layer.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: February 15, 2005
    Assignee: Carl Zeiss SMT AG
    Inventor: Karl-Heinz Schuster
  • Publication number: 20050030635
    Abstract: The invention relates to a projection lens comprising a lens assembly that has at least one first narrowing of the group of light beams. A lens with a non-spherical surface is located in front of and/or behind the first narrowing.
    Type: Application
    Filed: September 16, 2004
    Publication date: February 10, 2005
    Inventor: Karl-Heinz Schuster
  • Publication number: 20050030506
    Abstract: In a method for manufacturing semiconductor devices and other finely structured parts, a projection objective (5) is used in order to project the image of a pattern arranged in the object plane of the projection objective onto a photosensitive substrate which is arranged in the region of the image plane (12) of the projection objective. In this case, there is set between an exit surface (15), assigned to the projection objective, for exposing light and an incoupling surface (11), assigned to the substrate, for exposing light a small finite working distance (16) which is at least temporarily smaller in size and exposure time interval than a maximum extent of an optical near field of the light emerging from the exit surface. As a result, projection objectives with very high numerical apertures in the region of NA>0.8 or more can be rendered useful for contactless projection lithography.
    Type: Application
    Filed: July 9, 2004
    Publication date: February 10, 2005
    Inventor: Karl-Heinz Schuster
  • Publication number: 20050030634
    Abstract: A projection exposure machine comprises a projection lens with a lens arrangement and at least one stop. The lens arrangement comprises a group of optical elements which is arranged between the stop and the image plane. An optical element of the group situated close to the image plane has a thickness of at least 6.5% of the entire stop diameter.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 10, 2005
    Applicant: Carl Zeiss SMT AG
    Inventor: Karl-Heinz Schuster
  • Patent number: 6831794
    Abstract: A lens has at least one aspheric lens surface, an objective with at least one aspheric lens surface, and a projection exposure device for microlithography and a method for the production of microstructured components with an objective having at least one aspheric lens surface. The object of the invention is to provide a method by which new designs with aspheric lens surfaces can be generated without consultation with manufacturing, with this object attained by the measure of describing the aspheric lens surfaces by Zernike polynomials, which makes it is possible to undertake a classification of aspheric lens surfaces such that the respective aspheric lens surface can be polished and tested at a justifiable cost when at least two of three, or all three, of certain conditions are present.
    Type: Grant
    Filed: June 21, 2003
    Date of Patent: December 14, 2004
    Assignee: Carl Zeiss SMT AG
    Inventors: Karl-Heinz Schuster, Frank Schillke, Franz-Josef Stickel, Alexander Epple
  • Patent number: 6825913
    Abstract: An illumination equipment for microlithography has an illumination system, and a reticle with magnesium fluoride as the support material. The illumination system provides radially polarized light, and the magnesium fluoride is oriented with its principal axis about in the direction of the optical axis (A) at the reticle. In addition, a suitable cooling system is described.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: November 30, 2004
    Assignee: Carl Zeiss SMT AG
    Inventors: Karl-Heinz Schuster, Christian Wagner
  • Publication number: 20040233409
    Abstract: A projection objective has at least five lens groups (G1 to G5) and has several lens surfaces. At least two aspheric lens surfaces are arranged so as to be mutually adjacent. These mutually adjacently arranged lens surfaces are characterized as a double asphere. This at least one double asphere (21) is mounted at a minimum distance from an image plane (0′) which is greater than the maximum lens diameter (D2) of the objective.
    Type: Application
    Filed: November 7, 2003
    Publication date: November 25, 2004
    Applicant: Carl-Zeiss-Stiftung
    Inventors: Karl-Heinz Schuster, David R. Shafer, Wilhelm Ulrich, Helmut Beierl, Wolfgang Singer
  • Patent number: 6822729
    Abstract: A method and an arrangement for microlithographic projection exposure at high aperture achieve a contrast increase by the polarization of the light perpendicular to the plane of incidence on the resist. Arrangements are provided which influence the tangential polarization or the linear polarization adapted to the dipole illumination in the illuminating system and in the reduction objective.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: November 23, 2004
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Karl-Heinz Schuster, Christian Wagner, Martin Schriever
  • Publication number: 20040228001
    Abstract: A projection objective includes a first lens group (G1) of positive refractive power, a second lens group (G2) of negative refractive power and at least one further lens group of positive refractive power in which a diaphragm is mounted. The first lens group (G1) includes exclusively lenses of positive refractive power. The number of lenses of positive refractive power (L101 to L103; L201, L202) of the first lens group (G1) is less than the number of lenses of positive refractive power (L116 to L119; L215 to L217) which are mounted forward of the diaphragm of the further lens group (G5).
    Type: Application
    Filed: June 23, 2004
    Publication date: November 18, 2004
    Applicant: Carl Zeiss Semiconductor Manufacturing Technologies AG.
    Inventors: Karl-Heinz Schuster, Alexander Epple
  • Publication number: 20040212899
    Abstract: A lens has at least one aspheric lens surface, an objective with at least one aspheric lens surface, and a projection exposure device for microlithography and a method for the production of microstructured components with an objective having at least one aspheric lens surface. The object of the invention is to provide a method by which new designs with aspheric lens surfaces can be generated without consultation with manufacturing, with this object attained by the measure of describing the aspheric lens surfaces by Zernike polynomials, which makes it is possible to undertake a classification of aspheric lens surfaces such that the respective aspheric lens surface can be polished and tested at a justifiable cost when at least two of three, or all three, of certain conditions are present.
    Type: Application
    Filed: June 21, 2003
    Publication date: October 28, 2004
    Inventors: Karl-Heinz Schuster, Frank Schillke, Franz-Josef Stickel, Alexander Epple
  • Publication number: 20040207928
    Abstract: A reticle-masking (REMA) objective for imaging an object plane onto an image plane has a condenser portion, an intermediate portion, and a field lens portion. The three portions together have no more than 10 lenses with a combined total of no more than five aspheric lens surfaces. Each of the three portions of the REMA objective has one or two aspheric lens surfaces.
    Type: Application
    Filed: December 12, 2003
    Publication date: October 21, 2004
    Inventors: Jorg Schultz, Johannes Wangler, Karl-Heinz Schuster, Alexander Sohmer, Alexander Epple, Jurgen Grunwald, Christa Muller, Janosch Muller
  • Patent number: 6806942
    Abstract: A projection exposure system is proposed which is positionable between a first object and a second object for imaging the first object in a region of the second object with light of a wavelength band having a width &dgr;&lgr; about a central working wavelength &lgr;, wherein a relative width &dgr;&lgr;/&lgr; of the wavelength band is larger than 0.002, in particular, larger than 0.005, for example, of the Hg-I-line. The projection exposure system is a so-called three-bulge system comprising three bulges having, as a whole, a positive refractive power and two waists having, as a whole, a negative refractive power. By applying suitable measures, in particular, by suitably selecting the material for the lenses forming the projection exposure system, the long-term stability of the system is increased.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: October 19, 2004
    Assignee: Carl Zeiss SMT AG
    Inventors: Karl-Heinz Schuster, Wilhelm Ulrich, Toralf Gruner, Daniel Kraehmer, Wolfgang Singer, Alexander Epple, Helmut Beierl, Reiner Garreis
  • Patent number: 6801364
    Abstract: The invention relates to a projection lens comprising a lens assembly that has at least one first narrowing of the group of light beams. A lens with a non-spherical surface is located in front of and/or behind the first narrowing.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: October 5, 2004
    Assignee: Carl Zeiss SMT AG
    Inventor: Karl-Heinz Schuster
  • Publication number: 20040184019
    Abstract: A retardation arrangement for converting an input radiation beam, incident from an input side of the retardation arrangement, into an output radiation beam which has over its cross section a spatial distribution of polarization states which can be influenced by the retardation arrangement and differs from the spatial distribution of polarization states of the input radiation, is designed as a reflective retardation arrangement. A useful cross section of the retardation arrangement has a multiplicity of retardation zones of different retardation effect. Such a mirror arrangement having a retardation effect varying as a function of location can be used to compensate undesired fluctuations in the polarization state over the cross section of an input radiation beam and/or to set specific output polarization states, for example in order to set radial or tangential polarization.
    Type: Application
    Filed: November 26, 2003
    Publication date: September 23, 2004
    Applicant: CARL ZEISS SMT AG
    Inventors: Michael Totzeck, Birgit Enkisch, Karl-Heinz Schuster
  • Patent number: 6788387
    Abstract: A projection objective includes a first lens group (G1) of positive refractive power, a second lens group (G2) of negative refractive power and at least one further lens group of positive refractive power in which a diaphragm is mounted. The first lens group (G1) includes exclusively lenses of positive refractive power. The number of lenses of positive refractive power (L101 to L103; L201, L202) of the first lens group (G1) is less than the number of lenses of positive refractive power (L116 to L119; L215 to L217) which are mounted forward of the diaphragm of the further lens group (G5).
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 7, 2004
    Assignee: Carl Zeiss Semiconductor Manufacturing Technologies AG
    Inventors: Karl-Heinz Schuster, Alexander Epple
  • Publication number: 20040169914
    Abstract: A projection exposure lens system has an object side catadioptric system, and intermediate image and a refractive lens system. The refractive lens system from its intermediate image side and in the direction of its image plane has a first lens group of positive refractive power, a second lens group of negative refractive power, a third lens group of positive refractive power, a fourth lens group of negative refractive power, and a fifth lens group of positive refractive power.
    Type: Application
    Filed: February 25, 2004
    Publication date: September 2, 2004
    Inventors: David R. Shafer, Helmut Beierl, Gerhard Furter, Karl-Heinz Schuster, Wilhelm Ulrich
  • Patent number: 6781668
    Abstract: An optical arrangement, in particular a microlithographic projection printing installation, has in particular a slot-shaped image field or rotationally non-symmetrical illumination. An optical element (5) is therefore acted upon in a rotationally non-symmetrical manner by the radiation of a light source. To temper the optical element (5), a supply apparatus (11, 19 to 23) for gas is used. The latter having at least one supply line (21) and at least one gas directing device (11). The latter is aligned relative to the optical element (5) and controllable in such a way that the gas is directed by the gas directing device (11) towards the optical element (5). The volumetric flow of the exiting gas therefore has a magnitude and spatial distribution (17), which are adapted to the intensity distribution (6) of the radiation. By virtue of such tempering, rotationally non-symmetrical light-induced image defects in the optical element (5) are avoided or compensated.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: August 24, 2004
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Karl-Heinz Schuster, Hubert Holderer, Rudolf Von Bünau, Christian Wagner, Jochen Becker, Stefan Xalter, Wolfgang Hummel