Patents by Inventor Yuhei Sumiyoshi

Yuhei Sumiyoshi 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: 20240077806
    Abstract: An exposure apparatus that exposes a substrate to light by using an original in which a pattern is formed includes an illumination optical system arranged to guide illumination light to the original, the illumination light including first illumination light with a first wavelength and second illumination light with a second wavelength different from the first wavelength, and a projection optical system arranged to form a pattern image of the original by using the illumination light at a plurality of positions in an optical axis direction. The illumination optical system is configured to adjust a position deviation in a direction perpendicular to the optical axis direction between a pattern image formed by the first illumination light and a pattern image formed by the second illumination light by changing an incident angle of the illumination light entering the original.
    Type: Application
    Filed: November 1, 2023
    Publication date: March 7, 2024
    Inventor: Yuhei Sumiyoshi
  • Patent number: 11835863
    Abstract: An exposure apparatus that exposes a substrate to light by using an original in which a pattern is formed includes an illumination optical system arranged to guide illumination light to the original, the illumination light including first illumination light with a first wavelength and second illumination light with a second wavelength different from the first wavelength, and a projection optical system arranged to form a pattern image of the original by using the illumination light at a plurality of positions in an optical axis direction. The illumination optical system is configured to adjust a position deviation in a direction perpendicular to the optical axis direction between a pattern image formed by the first illumination light and a pattern image formed by the second illumination light by changing an incident angle of the illumination light entering the original.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: December 5, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuhei Sumiyoshi
  • Patent number: 11656554
    Abstract: The present invention provides an exposure apparatus that exposes a substrate via an original, including an illumination optical system configured to illuminate the original, and a projection optical system configured to project a pattern of the original onto the substrate, wherein the illumination optical system illuminates the original by illumination light which includes a first portion that enters an incident pupil of the projection optical system and a second portion which enters a region outside the incident pupil, and the first portion and the second portion are separated from each other on an incident pupil plane of the projection optical system.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: May 23, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuhei Sumiyoshi, Daisuke Kobayashi
  • Publication number: 20220413392
    Abstract: An exposure apparatus that exposes a substrate to light by using an original in which a pattern is formed includes an illumination optical system arranged to guide illumination light to the original, the illumination light including first illumination light with a first wavelength and second illumination light with a second wavelength different from the first wavelength, and a projection optical system arranged to form a pattern image of the original by using the illumination light at a plurality of positions in an optical axis direction. The illumination optical system is configured to adjust a position deviation in a direction perpendicular to the optical axis direction between a pattern image formed by the first illumination light and a pattern image formed by the second illumination light by changing an incident angle of the illumination light entering the original.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 29, 2022
    Inventor: Yuhei Sumiyoshi
  • Publication number: 20210116677
    Abstract: The present invention provides an exposure apparatus that exposes a substrate via an original, including an illumination optical system configured to illuminate the original, and a projection optical system configured to project a pattern of the original onto the substrate, wherein the illumination optical system illuminates the original by illumination light which includes a first portion that enters an incident pupil of the projection optical system and a second portion which enters a region outside the incident pupil, and the first portion and the second portion are separated from each other on an incident pupil plane of the projection optical system.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 22, 2021
    Inventors: Yuhei Sumiyoshi, Daisuke Kobayashi
  • Patent number: 10545413
    Abstract: An evaluation method for evaluating an aberration of a projection optical system in an exposure apparatus is provided. A first prediction coefficient of a first prediction formula for an aberration that is symmetrical with respect to an optical axis of the projection optical system is obtained, and a second prediction coefficient of a second prediction formula for an aberration that is asymmetrical with respect to the optical axis of the projection optical system is obtained. The aberration of the projection optical system is evaluated using the first prediction coefficient in a case where the shape of the illuminated region is determined as symmetrical with respect to the optical axis, and the aberration of the projection optical system is evaluated using the first and the second prediction coefficients in a case where the shape of the illuminated region is asymmetrical with respect to the optical axis.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Bunsuke Takeshita, Yuhei Sumiyoshi, Noritoshi Sakamoto
  • Publication number: 20190361355
    Abstract: An evaluation method for evaluating an aberration of a projection optical system in an exposure apparatus is provided. A first prediction coefficient of a first prediction formula for an aberration that is symmetrical with respect to an optical axis of the projection optical system is obtained, and a second prediction coefficient of a second prediction formula for an aberration that is asymmetrical with respect to the optical axis of the projection optical system is obtained. The aberration of the projection optical system is evaluated using the first prediction coefficient in a case where the shape of the illuminated region is determined as symmetrical with respect to the optical axis, and the aberration of the projection optical system is evaluated using the first and the second prediction coefficients in a case where the shape of the illuminated region is asymmetrical with respect to the optical axis.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 28, 2019
    Inventors: Bunsuke Takeshita, Yuhei Sumiyoshi, Noritoshi Sakamoto
  • Patent number: 10191394
    Abstract: A distortion detection method includes obtaining a positional deviation amount expression formula that expresses positional deviation amounts in two directions at each position on a substrate held by a chuck, based on information about a warping shape of the substrate in a state where the substrate is not yet held by the chuck, calculating positional deviation amounts in two directions at a plurality of positions on the substrate based on the obtained positional deviation amount expression formula, and obtaining a plurality of types of distortion components relating to a shot region of the substrate based on the positional deviation amounts in two directions obtained at the plurality of positions.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: January 29, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuhei Sumiyoshi
  • Publication number: 20170060000
    Abstract: A distortion detection method includes obtaining a positional deviation amount expression formula that expresses positional deviation amounts in two directions at each position on a substrate held by a chuck, based on information about a warping shape of the substrate in a state where the substrate is not yet held by the chuck, calculating positional deviation amounts in two directions at a plurality of positions on the substrate based on the obtained positional deviation amount expression formula, and obtaining a plurality of types of distortion components relating to a shot region of the substrate based on the positional deviation amounts in two directions obtained at the plurality of positions.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Inventor: Yuhei Sumiyoshi
  • Patent number: 8760618
    Abstract: A projection optical system of the present invention includes an optical element group that includes optical elements, and a controller that drives at least one of the first optical elements. The optical element group includes aspheric surfaces having a complementary relationship with each other and are arranged so that the aspheric surfaces face each other. The controller changes a relative position between the optical elements in a first direction and a second direction orthogonal to the first direction to control optical performances of the projection optical system corresponding to each of the first direction and the second direction.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 24, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuhei Sumiyoshi
  • Publication number: 20140168623
    Abstract: An exposure apparatus includes: an optical element positioned along an optical axis of a projection optical system and configured to include a surface having a rotationally asymmetric shape; a driving unit configured to drive the optical element with at least two degrees of freedom; and a control unit configured to control the drive with two degrees of freedom to correct an aberration having twofold symmetry in a direction represented by a linear sum of the aberration of components in two directions based on information showing a relationship between a driving amount with two degrees of freedom and the components of the aberration in the two directions, and an amount to be adjusted of each of the components of the aberration in the two directions.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 19, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Rika HOSHINO, Yuhei SUMIYOSHI
  • Patent number: 8477286
    Abstract: A projection optical system is configured to project an image of an object plane onto an image plane, and includes a first optical element having an aspheric shape that is rotationally asymmetric with respect to an optical axis, a moving unit configured to move the first optical element in a direction perpendicular to the optical axis, and a second optical element fixed on the optical axis, and configured to reduce an optical path length difference caused by an aspheric surface of the first optical element, the second optical element having no aspheric shape complement to the aspheric shape of the first optical element.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: July 2, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuhei Sumiyoshi
  • Patent number: 8437004
    Abstract: A detection apparatus which illuminates a sample and detects light reflected by the sample, comprises a light source, a columnar reflecting member having a columnar reflecting surface which reflects light having entered a first end of the columnar reflecting member by a plurality of number of times, and emits the light from a second end of the columnar reflecting member, a mirror which reflects light radiated by the light source so as to guide to the first end and a detector, wherein the sample is illuminated with the light emitted from the second end, and the detector is configured to detect the light which has been reflected by the sample and has passed through the columnar reflecting member, and a reflecting surface of the mirror is a concave surface, and a shape of a reflecting surface of the mirror on a section perpendicular to an axis of the columnar reflecting member is concave.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: May 7, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuhei Sumiyoshi, Takumi Tokimitsu, Hiroyuki Yuuki
  • Publication number: 20110109908
    Abstract: A detection apparatus which illuminates a sample and detects light reflected by the sample, comprises a light source, a columnar reflecting member having a columnar reflecting surface which reflects light having entered a first end of the columnar reflecting member by a plurality of number of times, and emits the light from a second end of the columnar reflecting member, a mirror which reflects light radiated by the light source so as to guide to the first end and a detector, wherein the sample is illuminated with the light emitted from the second end, and the detector is configured to detect the light which has been reflected by the sample and has passed through the columnar reflecting member, and a reflecting surface of the mirror is a concave surface, and a shape of a reflecting surface of the mirror on a section perpendicular to an axis of the columnar reflecting member is concave.
    Type: Application
    Filed: October 20, 2010
    Publication date: May 12, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuhei Sumiyoshi, Takumi Tokimitsu, Hiroyuki Yuuki
  • Publication number: 20100225889
    Abstract: A projection optical system is configured to project an image of an object plane onto an image plane, and includes a first optical element having an aspheric shape that is rotationally asymmetric with respect to an optical axis, a moving unit configured to move the first optical element in a direction perpendicular to the optical axis, and a second optical element fixed on the optical axis, and configured to reduce an optical path length difference caused by an aspheric surface of the first optical element, the second optical element having no aspheric shape complement to the aspheric shape of the first optical element.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 9, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuhei Sumiyoshi
  • Publication number: 20100182577
    Abstract: A projection optical system of the present invention includes an optical element group that includes optical elements, and a controller that drives at least one of the first optical elements. The optical element group includes aspheric surfaces having a complementary relationship with each other and are arranged so that the aspheric surfaces face each other. The controller changes a relative position between the optical elements in a first direction and a second direction orthogonal to the first direction to control optical performances of the projection optical system corresponding to each of the first direction and the second direction.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 22, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuhei Sumiyoshi
  • Patent number: 7408620
    Abstract: An exposure apparatus includes a illumination optical system for illuminating a reticle with light from a light source, and a projection optical system for projecting a pattern of the reticle onto an object, said projection optical system includes a lens closest to the object, wherein a surface on the object side of the lens is smaller than an effective area of a surface on the reticle side of the lens, and wherein said exposure apparatus exposes the object via a liquid that is filled in a space between the lens and the object.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: August 5, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuhei Sumiyoshi
  • Patent number: 7403262
    Abstract: A projection optical system used for an exposure apparatus to projecting a reduced size of an image of an object onto an image plane includes plural refractive elements that dispense with a reflective element having a substantial optical power, wherein the projection optical system forms an intermediate image.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: July 22, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuhei Sumiyoshi
  • Patent number: 7365826
    Abstract: A projection optical system includes an optical element that includes and locally uses a reflective or refractive area that is substantially axially symmetrical around an optical axis, the optical element being rotatable around the optical axis.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: April 29, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuhei Sumiyoshi, Masayuki Suzuki
  • Publication number: 20070153248
    Abstract: An exposure apparatus includes a illumination optical system for illuminating a reticle with light from a light source, and a projection optical system for projecting a pattern of the reticle onto an object, said projection optical system includes a lens closest to the object, wherein a surface on the object side of the lens is smaller than an effective area of a surface on the reticle side of the lens, and wherein said exposure apparatus exposes the object via a liquid that is filled in a space between the lens and the object.
    Type: Application
    Filed: March 16, 2007
    Publication date: July 5, 2007
    Inventor: Yuhei Sumiyoshi