Patents by Inventor Ikuo Arata
Ikuo Arata 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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Publication number: 20250244172Abstract: The spectroscopic measurement device includes a light entrance portion, a reflective diffraction grating, an optical detector, a lens, and an analyzer. The optical detector outputs first spectral data of light to be measured by receiving a spectral image in a first exposure time in a first light receiving region, and outputs second spectral data of the light to be measured by receiving the spectral image in a second exposure time longer than the first exposure time in a second light receiving region arranged side by side with the first light receiving region. The analyzer generates spectral data based on the first spectral data and the second spectral data. The optical detector is disposed so that a stray light region, in which stray light gathers, is located in the first light receiving region.Type: ApplicationFiled: December 19, 2022Publication date: July 31, 2025Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Kenichi OHTSUKA, Hideki MASUOKA, Kazuya IGUCHI, Ikuo ARATA
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Publication number: 20250224273Abstract: An optical detector detects primary light in light to be measured dispersed in an X-axis direction. The optical detector includes a package having an opening, a window closing the opening and allowing the predetermined order of light to transmit, and a light detection element disposed inside the package, including a light receiving region facing the window, and configured to detect the predetermined order of light. The light receiving region includes a plurality of light detection channels arranged in the X-axis direction. The window includes a light transmitting member having a light incident surface and a light exit surface, and a linear variable filter coat formed on one of the light incident surface and the light exit surface, and having a transmitted wavelength changing along the X-axis direction.Type: ApplicationFiled: December 19, 2022Publication date: July 10, 2025Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Kenichi OHTSUKA, Ikuo ARATA
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Publication number: 20250093279Abstract: The semiconductor failure analysis device 1 includes: a tester 2 configured to apply a stimulation signal to a semiconductor device 100; a light source 3 configured to generate irradiation light L1 with which the semiconductor device 100 is irradiated; a solid immersion lens 4 disposed on an optical path of the irradiation light L1; a light detection unit 5 configured to receive reflected light L2 and to output a detection signal according to the reflected light L2; an optical system 6 disposed between the light source 3 and the solid immersion lens 4 to emit the irradiation light L1 to the semiconductor device 100 via the solid immersion lens 4 and disposed between the solid immersion lens 4 and the light detection unit 5 to emit the reflected light L2 received via the solid immersion lens 4 to the light detection unit 5; and a computer 7 configured to obtain information on a failure portion of the semiconductor device 100 using the detection signal.Type: ApplicationFiled: November 5, 2024Publication date: March 20, 2025Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Masataka IKESU, Ikuo ARATA, Yoshihiro ITO, Toshimichi ISHIZUKA
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Patent number: 12235433Abstract: A solid immersion lens unit includes a solid immersion lens and a holder for swingably holding the solid immersion lens. The solid immersion lens includes a first lens portion formed of a first material, and a second lens portion formed of a second material having a refractive index smaller than a refractive index of the first material and coupled to the first lens portion. The first lens portion includes a contact surface for contacting with an observation object and a convex first spherical surface. The second lens portion includes a concave second spherical surface facing the first spherical surface and a convex third spherical surface to be disposed to face an objective lens. The holder has a contact portion configured to be contactable with the third spherical surface.Type: GrantFiled: July 16, 2020Date of Patent: February 25, 2025Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori Nakamura, Ikuo Arata, Xiangguang Mao
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Patent number: 12163900Abstract: The semiconductor failure analysis device includes: a light source configured to generate irradiation light with which the semiconductor device is irradiated; a solid immersion lens disposed on an optical path of the irradiation light; a light detection unit configured to receive reflected light and to output a detection signal according to the reflected light; an optical system 6 disposed between the light source and the solid immersion lens to emit the irradiation light to the semiconductor device via the solid immersion lens and disposed between the solid immersion lens and the light detection unit to emit the reflected light received via the solid immersion lens to the light detection unit. The light source emits the irradiation light having a center wavelength of 880 nm or more and 980 nm or less. The solid immersion lens is formed of GaAs.Type: GrantFiled: November 24, 2020Date of Patent: December 10, 2024Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Masataka Ikesu, Ikuo Arata, Yoshihiro Ito, Toshimichi Ishizuka
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Patent number: 11988497Abstract: An optical unit includes an input portion configured to have measurement light having a wavelength extending from an ultraviolet region to a visible region input thereto, an optical system configured to condense the measurement light in a state where a chromatic aberration is caused to occur, and an opening portion configured not to image light having a wavelength in the visible region and to image light having a wavelength in the ultraviolet region of the measurement light having a chromatic aberration having occurred therein.Type: GrantFiled: August 31, 2020Date of Patent: May 21, 2024Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Ikuo Arata, Satoshi Takimoto, Kenichi Ohtsuka
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Patent number: 11913888Abstract: A solid immersion lens unit includes a solid immersion lens having a contact surface for coming into contact with semiconductor device formed of a silicon substrate and a spherical surface to be disposed to face an objective lens; a holder holding the solid immersion lens; and an optical element held by the holder to be positioned between the objective lens and the solid immersion lens. The solid immersion lens transmits light having at least a part of wavelength in a range of 200 nm or greater and 1100 nm or lower. The optical element corrects aberration caused by a difference in refractive indices between the silicon substrate and the solid immersion lens.Type: GrantFiled: April 9, 2019Date of Patent: February 27, 2024Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Xiangguang Mao, Masanori Kobayashi, Hirotoshi Terada, Ikuo Arata, Masataka Ikesu
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Publication number: 20230087835Abstract: The semiconductor failure analysis device includes: a light source configured to generate irradiation light with which the semiconductor device is irradiated; a solid immersion lens disposed on an optical path of the irradiation light; a light detection unit configured to receive reflected light and to output a detection signal according to the reflected light; an optical system 6 disposed between the light source and the solid immersion lens to emit the irradiation light to the semiconductor device via the solid immersion lens and disposed between the solid immersion lens and the light detection unit to emit the reflected light received via the solid immersion lens to the light detection unit. The light source emits the irradiation light having a center wavelength of 880 nm or more and 980 nm or less. The solid immersion lens is formed of GaAs.Type: ApplicationFiled: November 24, 2020Publication date: March 23, 2023Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Masataka IKESU, Ikuo ARATA, Yoshihiro ITO, Toshimichi ISHIZUKA
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Publication number: 20220333913Abstract: An optical unit includes an input portion configured to have measurement light having a wavelength extending from an ultraviolet region to a visible region input thereto, an optical system configured to condense the measurement light in a state where a chromatic aberration is caused to occur, and an opening portion configured not to image light having a wavelength in the visible region and to image light having a wavelength in the ultraviolet region of the measurement light having a chromatic aberration having occurred therein.Type: ApplicationFiled: August 31, 2020Publication date: October 20, 2022Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Ikuo ARATA, Satoshi TAKIMOTO, Kenichi OHTSUKA
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Publication number: 20220326501Abstract: A solid immersion lens unit includes a solid immersion lens and a holder for swingably holding the solid immersion lens. The solid immersion lens includes a first lens portion formed of a first material, and a second lens portion formed of a second material having a refractive index smaller than a refractive index of the first material and coupled to the first lens portion. The first lens portion includes a contact surface for contacting with an observation object and a convex first spherical surface. The second lens portion includes a concave second spherical surface facing the first spherical surface and a convex third spherical surface to be disposed to face an objective lens. The holder has a contact portion configured to be contactable with the third spherical surface.Type: ApplicationFiled: July 16, 2020Publication date: October 13, 2022Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori NAKAMURA, Ikuo ARATA, Xiangguang MAO
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Publication number: 20210333216Abstract: A solid immersion lens unit includes a solid immersion lens having a contact surface for coming into contact with semiconductor device formed of a silicon substrate and a spherical surface to be disposed to face an objective lens; a holder holding the solid immersion lens; and an optical element held by the holder to be positioned between the objective lens and the solid immersion lens. The solid immersion lens transmits light having at least a part of wavelength in a range of 200 nm or greater and 1100 nm or lower. The optical element corrects aberration caused by a difference in refractive indices between the silicon substrate and the solid immersion lens.Type: ApplicationFiled: April 9, 2019Publication date: October 28, 2021Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Xiangguang MAO, Masanori KOBAYASHI, Hirotoshi TERADA, Ikuo ARATA, Masataka IKESU
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Publication number: 20200241275Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.Type: ApplicationFiled: April 17, 2020Publication date: July 30, 2020Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori Nakamura, Ikuo Arata, Yoshihiro Ito
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Patent number: 10663709Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.Type: GrantFiled: July 2, 2018Date of Patent: May 26, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori Nakamura, Ikuo Arata, Yoshihiro Ito
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Patent number: 10558010Abstract: A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three protrusion portions extending from an inner face of the first opening toward a center of the first opening and configured to be contactable with the spherical face portion.Type: GrantFiled: September 24, 2015Date of Patent: February 11, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Hirotoshi Terada, Ikuo Arata, Masataka Ikesu
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Patent number: 10545309Abstract: A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three plate members disposed on the objective lens side with respect to the first opening. Each of the three plate members is provided with a protrusion portion capable of contacting the spherical face portion.Type: GrantFiled: September 24, 2015Date of Patent: January 28, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Hirotoshi Terada, Ikuo Arata, Masataka Ikesu
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Publication number: 20180307030Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.Type: ApplicationFiled: July 2, 2018Publication date: October 25, 2018Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori NAKAMURA, Ikuo ARATA, Yoshihiro ITO
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Patent number: 10048483Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.Type: GrantFiled: June 30, 2016Date of Patent: August 14, 2018Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tomonori Nakamura, Ikuo Arata, Yoshihiro Ito
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Publication number: 20170285296Abstract: A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three plate members disposed on the objective lens side with respect to the first opening. Each of the three plate members is provided with a protrusion portion capable of contacting the spherical face portion.Type: ApplicationFiled: September 24, 2015Publication date: October 5, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hirotoshi TERADA, Ikuo ARATA, Masataka IKESU
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Publication number: 20170235087Abstract: A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three protrusion portions extending from an inner face of the first opening toward a center of the first opening and configured to be contactable with the spherical face portion.Type: ApplicationFiled: September 24, 2015Publication date: August 17, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hirotoshi TERADA, Ikuo ARATA, Masataka IKESU
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Publication number: 20160313547Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.Type: ApplicationFiled: June 30, 2016Publication date: October 27, 2016Inventors: Tomonori NAKAMURA, Ikuo ARATA, Yoshihiro ITO