Patents by Inventor Issey Tanaka

Issey Tanaka 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: 20110279794
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage, a supply mechanism, a recovery mechanism and an auxiliary recovery mechanism. The substrate stage mounts the substrate and moves within a two-dimensional plane while holding the substrate. The supply mechanism supplies liquid to a space between the projection optical system and the substrate on the substrate stage. The recovery mechanism recovers the liquid, and the auxiliary recovery mechanism recovers the liquid which could not be recovered by the recovery mechanism.
    Type: Application
    Filed: July 21, 2011
    Publication date: November 17, 2011
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Patent number: 7911582
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted and that moves within a two-dimensional plane holding the substrate. A supply mechanism supplies liquid to a space between the projection optical system and the substrate on the substrate stage. A recovery mechanism recovers the liquid and an auxiliary recovery mechanism recovers the liquid which could not be recovered by the recovery mechanism.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: March 22, 2011
    Assignee: Nikon Corporation
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20110051106
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted that moves within a two-dimensional plane holding the substrate. In addition, a supply mechanism supplies liquid to a space between the projection optical system and the substrate on the substrate stage. In addition, at least one bubble recovery mechanism recovers bubbles in the liquid in an upstream side of the liquid flow with respect to the projection optical system.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 3, 2011
    Applicant: Nikon Corporation
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Patent number: 7505111
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted that moves within a two-dimensional plane holding the substrate. The apparatus also includes a supply mechanism that supplies liquid to a predetermined spatial area which includes a space between the projection optical system and the substrate on the substrate stage, and an adjustment unit that adjusts exposure conditions based on temperature information on the liquid between the projection optical system and the substrate.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: March 17, 2009
    Assignee: Nikon Corporation
    Inventors: Shigeru Hirukawa, Issey Tanaka
  • Publication number: 20090015807
    Abstract: An immersion lithographic system for patterning a work piece arranged at an image plane and covered at least partly with a layer sensitive to electromagnetic radiation, includes: a source emitting electromagnetic radiation onto an object plane; a mask arranged at the object plane to relay the electromagnetic radiation toward the work piece; and an immersion medium contacting at least a portion of an immersion optics of the lithographic system and a portion of the work piece. The immersion medium is supplied through at least one orifice arranged in the immersion optics.
    Type: Application
    Filed: September 9, 2008
    Publication date: January 15, 2009
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20080151203
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted and that moves within a two-dimensional plane holding the substrate. A supply mechanism supplies liquid to a space between the projection optical system and the substrate on the substrate stage. A recovery mechanism recovers the liquid and an auxiliary recovery mechanism recovers the liquid which could not be recovered by the recovery mechanism.
    Type: Application
    Filed: January 30, 2008
    Publication date: June 26, 2008
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20070263196
    Abstract: A lithographic projection apparatus is arranged to project a pattern from a patterning device onto a substrate through a liquid confined to a space adjacent to the substrate. The apparatus includes a liquid diverter in the space to promote liquid flow across the space.
    Type: Application
    Filed: July 20, 2007
    Publication date: November 15, 2007
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20070115447
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted and that moves within a two-dimensional plane holding the substrate. In addition, a supply mechanism supplies liquid to locally fill a space between the projection optical system and the substrate on the substrate stage with the liquid, and a recovery mechanism recovers the liquid. A plate is provided in at least a part of the periphery of a mounted area of the substrate on the substrate stage. The plate has a surface arranged at substantially the same height as a surface of the substrate mounted on the substrate stage.
    Type: Application
    Filed: January 19, 2007
    Publication date: May 24, 2007
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20070115448
    Abstract: An exposure apparatus illuminates a pattern with an energy beam and transfers the pattern onto a substrate via a projection optical system. The exposure apparatus includes a substrate stage on which the substrate is mounted that moves within a two-dimensional plane holding the substrate. The apparatus also includes a supply mechanism that supplies liquid to a predetermined spatial area which includes a space between the projection optical system and the substrate on the substrate stage, and an adjustment unit that adjusts exposure conditions based on temperature information on the liquid between the projection optical system and the substrate.
    Type: Application
    Filed: January 23, 2007
    Publication date: May 24, 2007
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Issey Tanaka
  • Publication number: 20050259234
    Abstract: Liquid is supplied by a supply mechanism to a space between a lens and a wafer via a supply nozzle on one side of the lens, and the liquid is recovered by a recovery mechanism via a recovery pipe on the other side of the lens. When the supply and the recovery of the liquid are performed in parallel, a predetermined amount of liquid (exchanged at all times) is held between the lens and the substrate on the stage. Accordingly, when exposure (pattern transfer on the substrate) is performed in this state, an immersion method is applied and a pattern is transferred with good precision onto the substrate. In addition, in the case the liquid leaks out from under the lower edge of a peripheral wall, the liquid that could not be recovered is recovered by an auxiliary recovery mechanism via a slit. And, by such operations, the substrate is freed from the residual liquid on the substrate.
    Type: Application
    Filed: June 8, 2005
    Publication date: November 24, 2005
    Applicant: NIKON CORPORATION
    Inventors: Shigeru Hirukawa, Nobutaka Magome, Issey Tanaka
  • Publication number: 20050122499
    Abstract: A projection optical system, which forms a reduced image of a first surface onto a second surface, has excellent optical performance without substantially being affected by birefringence despite the use of optical material having intrinsic birefringence. This is done by suitably arranging certain crystal axes of radiation transmissive members that make up the projection optical system relative to the optical axis of the projection optical system, and by suitably arranging the certain crystal axes of the radiation transmissive members relative to the crystal axes of other radiation transmissive members in the projection optical system.
    Type: Application
    Filed: November 8, 2004
    Publication date: June 9, 2005
    Applicant: NIKON CORPORATION
    Inventors: Yasuhiro Omura, Naomasa Shiraishi, Issey Tanaka, Soichi Owa, Toshihiko Ozawa, Shunsuke Niisaka
  • Patent number: 6844915
    Abstract: An optical system attains good optical performance without substantially receiving the effects of birefringence even when using an optical material having intrinsic birefringence. An optical system that includes at least one radiation transmissive member that transmits light having a wavelength of 200 nm or less has an optical axis that substantially coincides with a crystal axis [100] or a crystal axis optically equivalent to the crystal axis [100].
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: January 18, 2005
    Assignee: Nikon Corporation
    Inventors: Soichi Owa, Naomasa Shiraishi, Issey Tanaka, Yasuhiro Omura
  • Patent number: 6831731
    Abstract: A projection optical system, which forms a reduced image of a first surface onto a second surface, has excellent optical performance without substantially being affected by birefringence despite the use of optical material having intrinsic birefringence. This is done by suitably arranging certain crystal axes of radiation transmissive members that make up the projection optical system relative to the optical axis of the projection optical system, and by suitably arranging the certain crystal axes of the radiation transmissive members relative to the crystal axes of other radiation transmissive members in the projection optical system.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 14, 2004
    Assignee: Nikon Corporation
    Inventors: Yasuhiro Omura, Naomasa Shiraishi, Issey Tanaka, Soichi Owa, Toshihiko Ozawa, Shunsuke Niisaka
  • Patent number: 6710930
    Abstract: In a projection optical system for projecting and transferring a pattern on a projection original R onto a photosensitive substrate W, one or a plurality of lenses having an in-homogeous radial refractive index about the optical axis are used, while one or a plurality of aspheric surfaces for correcting the aberration resulting from the in-homogeousness in refractive index of lenses are provided.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 23, 2004
    Assignee: Nikon Corporation
    Inventors: Takeshi Suzuki, Issey Tanaka
  • Patent number: 6583931
    Abstract: In a projection optical system having at least two silica glass optical members, a birefringence value is measured at each of points in a plane normal to the optical axis with the center at an intersection of each optical member with the optical axis, a distribution of signed birefringence values in each optical member is obtained by assigning a positive sign to each birefringence value when a direction of the fast axis thereof is a radial direction to the intersection with the optical axis and assigning a negative sign to each birefringence value when the direction of the fast axis thereof is normal to the radial direction, and the optical members are combined with each other so as to satisfy such a placement condition that a signed birefringence characteristic value of the entire projection optical system calculated based on the distributions of signed birefringence values is between −0.5 and +0.5 nm/cm both inclusive.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: June 24, 2003
    Assignee: Nikon Corporation
    Inventors: Hiroyuki Hiraiwa, Issey Tanaka
  • Publication number: 20030063394
    Abstract: In a projection optical system for projecting and transferring a pattern on a projection original R onto a photosensitive substrate W, one or a plurality of lenses having an in-homogeous radial refractive index about the optical axis are used, while one or a plurality of aspheric surfaces for correcting the aberration resulting from the in-homogeousness in refractive index of lenses are provided.
    Type: Application
    Filed: September 10, 2002
    Publication date: April 3, 2003
    Applicant: Nikon Corporation
    Inventors: Takeshi Suzuki, Issey Tanaka
  • Publication number: 20030058421
    Abstract: A projection optical system has excellent optical performance without substantially being affected by birefringence despite the use of an optical material with intrinsic birefringence such as fluorite, for example. A projection optical system forms a reduced image of a first surface onto a second surface . A first group of radiation transmissive members is formed such that a crystal axis [100] and the optical axis nearly align and similarly a second group of radiation transmissive members is formed such that the crystal axis [100] and the optical axis nearly align. The first grout of radiation transmissive members and the second group of radiation transmissive members have a positional relationship rotated relatively 45 degrees around the center of the light axis. Both the first group of radiation transmissive members and the second group of radiation transmissive members are arranged in an optical path between a pupil position on the second surface side and the second surface.
    Type: Application
    Filed: June 28, 2002
    Publication date: March 27, 2003
    Applicant: NIKON CORPORATION
    Inventors: Yasuhiro Omura, Naomasa Shiraishi, Issey Tanaka, Soichi Owa, Toshihiko Ozawa, Shunsuke Niisaka
  • Publication number: 20030025894
    Abstract: An optical system attains good optical performance without substantially receiving the effects of birefringence even when using an optical material having intrinsic birefringence. An optical system that includes at least one radiation transmissive member that transmits light having a wavelength of 200 nm or less has an optical axis that substantially coincides with a crystal axis [100] or a crystal axis optically equivalent to the crystal axis [100].
    Type: Application
    Filed: July 30, 2002
    Publication date: February 6, 2003
    Applicant: NIKON CORPORATION
    Inventors: Soichi Owa, Naomasa Shiraishi, Issey Tanaka, Yasuhiro Omura
  • Publication number: 20020085176
    Abstract: In a projection optical system having at least two silica glass optical members, a birefringence value is measured at each of points in a plane normal to the optical axis with the center at an intersection of each optical member with the optical axis, a distribution of signed birefringence values in each optical member is obtained by assigning a positive sign to each birefringence value when a direction of the fast axis thereof is a radial direction to the intersection with the optical axis and assigning a negative sign to each birefringence value when the direction of the fast axis thereof is normal to the radial direction, and the optical members are combined with each other so as to satisfy such a placement condition that a signed birefringence characteristic value of the entire projection optical system calculated based on the distributions of signed birefringence values is between −0.5 and +0.5 nm/cm both inclusive.
    Type: Application
    Filed: December 27, 2001
    Publication date: July 4, 2002
    Applicant: NIKON CORPORATION
    Inventors: Hiroyuki Hiraiwa, Issey Tanaka
  • Patent number: RE38465
    Abstract: A projection optical system of the present invention has a first lens group G1 being positive, a second lens group G2 being negative, a third lens group G3 being positive, a fourth lens group G4 being negative, a fifth lens group G5 being positive, and a sixth lens group G6 being positive in the named order from the first object toward the second object, in which the second lens group G2 comprises an intermediate lens group G2M between a negative front lens L2F and a negative rear lens L2R and in which the intermediate lens group G2M is arranged to comprise at least a first positive lens being positive, a second lens being negative, a third lens being negative, and a fourth lens being negative in the named order from the first object toward the second object.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: March 16, 2004
    Assignee: Nikon Corporation
    Inventors: Hitoshi Matsuzawa, Mikihiko Ishii, Issey Tanaka