Patents by Inventor Yoshifumi Sekiguchi
Yoshifumi Sekiguchi 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).
-
Patent number: 11906420Abstract: This invention is capable of improving performance of a biochemical analyzer and facilitating the maintenance. A light source includes: a first LED that emits ultraviolet light and a second LED that has a light emission spectrum different from that of the first LED, the first LED and the second LED being disposed in parallel; a reflection surface that is opposite to the first LED and reflects light of the first LED; and a dichroic surface that is opposite to the second LED, reflects light of the first LED, and allows light of the second LED to penetrate.Type: GrantFiled: January 31, 2020Date of Patent: February 20, 2024Assignee: Hitachi High-Tech CorporationInventors: Yoshifumi Sekiguchi, Shin Imamura, Takahiro Ando, Tomoto Kawamura, Yuya Matsuoka, Sakuichiro Adachi, Yasuhiro Keta, Eiichiro Takada
-
Publication number: 20230374377Abstract: The purpose of the present invention is to increase the amount of near-infrared light emitted by a phosphor excited by near-ultraviolet light to blue light. The present invention relates to a phosphor containing gallium oxide Ga2O3 as the base composition, one or two elements selected from Cr and Fe as the light-emitting center, and aluminum fluoride AlF3 as the flux.Type: ApplicationFiled: August 31, 2021Publication date: November 23, 2023Inventors: Masaaki KOMATSU, Shin IMAMURA, Yoshifumi SEKIGUCHI, Takahiro ANDO, Eiichiro TAKADA
-
Publication number: 20230266485Abstract: A charged-particle detecting device 108, 108a, 108b, 108c, 108d, 108e, 108f, 108g or a radiation detecting device 203 detects charged particles or radiation as a detection target. These detection devices are each provided with: a scintillator 109 provided with a fluorescent layer 109a that converts the detection target into light 112; a light detector 111, 111b that detects the light 112 emitted from the scintillator 109; a light guide 110, 117 provided between the scintillator 109 and the light detector 111, 111b; and a blocking part 113, 114 that blocks a portion of the detection target incident on the scintillator 109 or the light emitted from the scintillator 109.Type: ApplicationFiled: June 17, 2020Publication date: August 24, 2023Applicant: Hitachi High-Tech CorporationInventors: Laila Ambar SARI, Shin IMAMURA, Takumu IWANAKA, Yoshifumi SEKIGUCHI
-
Patent number: 11694873Abstract: A charged particle beam apparatus using a light guide that improves light utilization efficiency includes a detector including a scintillator for emitting light when a charged particle is incident, a light receiving element, and a light guide for guiding the light from the scintillator to the light receiving element. The light guide includes: an incident surface that faces a light emitting surface of the scintillator and to which the light emitted by the scintillator is incident; an emitting surface that is configured to emit light; and a reflecting surface that is inclined with respect to the incident surface so that the light from the incident surface is reflected toward the emitting surface. The emitting surface is smaller than the incident surface. A slope surface is provided between the incident surface and the emitting surface, faces the reflecting surface, and is inclined with respect to the incident surface.Type: GrantFiled: October 10, 2022Date of Patent: July 4, 2023Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yoshifumi Sekiguchi, Shin Imamura, Shunsuke Mizutani, Shahedul Hoque, Uki Ikeda
-
Patent number: 11650450Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: GrantFiled: May 18, 2022Date of Patent: May 16, 2023Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
-
Publication number: 20230050424Abstract: Provided are a charged particle detector and a radiation detector capable of obtaining an observation image with correct contrast without saturation even when the number of signal electrons incident on a detector is increased due to an increase in the current of a primary electron beam. The charged particle detector is characterized by having a scintillator (109) having a signal electron detection surface (109a) for detecting signal electrons emitted when a specimen is irradiated with primary electrons and converting the signal electrons into light, a light detector (111) having a light detection surface (111a) for detecting the light emitted from the scintillator (109), and a light guide (110) disposed between the scintillator (109) and the light detector (111), wherein the area of the light detection surface (111a) is larger than the area of the signal electron detection surface (109a).Type: ApplicationFiled: March 2, 2020Publication date: February 16, 2023Inventors: Takumu IWANAKA, Yoshifumi SEKIGUCHI, Toshiaki KUSUNOKI, Shin IMAMURA, Hajime KAWANO
-
Publication number: 20230030651Abstract: A charged particle beam apparatus using a light guide that improves light utilization efficiency includes a detector including a scintillator for emitting light when a charged particle is incident, a light receiving element, and a light guide for guiding the light from the scintillator to the light receiving element. The light guide includes: an incident surface that faces a light emitting surface of the scintillator and to which the light emitted by the scintillator is incident; an emitting surface that is configured to emit light; and a reflecting surface that is inclined with respect to the incident surface so that the light from the incident surface is reflected toward the emitting surface. The emitting surface is smaller than the incident surface. A slope surface is provided between the incident surface and the emitting surface, faces the reflecting surface, and is inclined with respect to the incident surface.Type: ApplicationFiled: October 10, 2022Publication date: February 2, 2023Applicant: HITACHI HIGH-TECH CORPORATIONInventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Shunsuke MIZUTANI, Shahedul HOQUE, Uki IKEDA
-
Publication number: 20220413169Abstract: Provided are a scintillator and the like capable of improving emission intensity. A scintillator (S) comprises a sapphire substrate (6), a GaN layer (4) that is provided on the incident side to the sapphire substrate (6) and includes GaN, a quantum well structure (3) provided on the incident side to the GaN layer (4), and a conductive layer (2) provided on the incident side to the quantum well structure (3), wherein a plurality of emitting layers (21) including InGaN and a plurality of barrier layers (22) including GaN are alternatively stacked in the quantum well structure (3), and an oxygen-containing layer (23) including oxygen is provided between the quantum well structure (3) and the conductive layer (2).Type: ApplicationFiled: November 19, 2020Publication date: December 29, 2022Inventors: Shin IMAMURA, Toshiaki KUSUNOKI, Eri TAKAHASHI, Yoshifumi SEKIGUCHI, Takayuki KANDA
-
Patent number: 11515120Abstract: A charged particle beam apparatus using a light guide that improves light utilization efficiency includes a detector including a scintillator for emitting light when a charged particle is incident, a light receiving element, and a light guide for guiding the light from the scintillator to the light receiving element. The light guide includes: an incident surface that faces a light emitting surface of the scintillator and to which the light emitted by the scintillator is incident; an emitting surface that is configured to emit light; and a reflecting surface that is inclined with respect to the incident surface so that the light from the incident surface is reflected toward the emitting surface. The emitting surface is smaller than the incident surface. A slope surface is provided between the incident surface and the emitting surface, faces the reflecting surface, and is inclined with respect to the incident surface.Type: GrantFiled: September 21, 2018Date of Patent: November 29, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yoshifumi Sekiguchi, Shin Imamura, Shunsuke Mizutani, Shahedul Hoque, Uki Ikeda
-
Publication number: 20220276530Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
-
Patent number: 11398055Abstract: A calculation device comprises a color evaluation unit that acquires a sensor color and four or more reference colors from photography data from a measurement time when an indication object was photographed in a second photography environment; determines coefficients for color conversion between a first and the second photography environments based on the amount of change from color information for the reference colors in the first photography environment, which has been read from a calculation device storage unit, to color information for the reference colors in the second photography environment, which has been acquired from the photography data; and uses the sensor color acquired from the photography data from the measurement time and the color conversion coefficients to correct the sensor color to the color that would have been photographed in the first photography environment by solving a conversion formula including terms representing an affine transformation consisting of translation.Type: GrantFiled: March 20, 2019Date of Patent: July 26, 2022Assignee: HITACHI, LTD.Inventors: Yuji Suwa, Kohhei Aida, Shunsuke Mori, Shigetaka Tsubouchi, Masahiro Kawasaki, Yoshifumi Sekiguchi
-
Publication number: 20220214266Abstract: This invention is capable of improving performance of a biochemical analyzer and facilitating the maintenance. A light source includes: a first LED that emits ultraviolet light and a second LED that has a light emission spectrum different from that of the first LED, the first LED and the second LED being disposed in parallel; a reflection surface that is opposite to the first LED and reflects light of the first LED; and a dichroic surface that is opposite to the second LED, reflects light of the first LED, and allows light of the second LED to penetrate.Type: ApplicationFiled: January 31, 2020Publication date: July 7, 2022Inventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Takahiro ANDO, Tomoto KAWAMURA, Yuya MATSUOKA, Sakuichiro ADACHI, Yasuhiro KETA, Eiichiro TAKADA
-
Patent number: 11347100Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: GrantFiled: January 27, 2021Date of Patent: May 31, 2022Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
-
Publication number: 20210183614Abstract: A charged particle beam apparatus using a light guide that improves light utilization efficiency includes a detector including a scintillator for emitting light when a charged particle is incident, a light receiving element, and a light guide for guiding the light from the scintillator to the light receiving element. The light guide includes: an incident surface that faces a light emitting surface of the scintillator and to which the light emitted by the scintillator is incident; an emitting surface that is configured to emit light; and a reflecting surface that is inclined with respect to the incident surface so that the light from the incident surface is reflected toward the emitting surface. The emitting surface is smaller than the incident surface. A slope surface is provided between the incident surface and the emitting surface, faces the reflecting surface, and is inclined with respect to the incident surface.Type: ApplicationFiled: September 21, 2018Publication date: June 17, 2021Applicant: HITACHI HIGH-TECH CORPORATIONInventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Shunsuke MIZUTANI, Shahedul HOQUE, Uki IKEDA
-
Publication number: 20210158574Abstract: A calculation device comprises a color evaluation unit that acquires a sensor color and four or more reference colors from photography data from a measurement time when an indication object was photographed in a second photography environment; determines coefficients for color conversion between a first and the second photography environments based on the amount of change from color information for the reference colors in the first photography environment, which has been read from a calculation device storage unit, to color information for the reference colors in the second photography environment, which has been acquired from the photography data; and uses the sensor color acquired from the photography data from the measurement time and the color conversion coefficients to correct the sensor color to the color that would have been photographed in the first photography environment by solving a conversion formula including terms representing an affine transformation consisting of translation.Type: ApplicationFiled: March 20, 2019Publication date: May 27, 2021Applicant: HITACHI, LTD.Inventors: Yuji SUWA, Kohhei AIDA, Shunsuke MORI, Shigetaka TSUBOUCHI, Masahiro KAWASAKI, Yoshifumi SEKIGUCHI
-
Publication number: 20210149243Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: ApplicationFiled: January 27, 2021Publication date: May 20, 2021Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
-
Patent number: 10935834Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: GrantFiled: December 26, 2019Date of Patent: March 2, 2021Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
-
Publication number: 20200203120Abstract: A charged particle beam device includes a scintillator and a light guide. The light guide has an incident surface configured to incident a light from the scintillator, an emission surface configured to emit a light incident from the incident surface, and a first surface configured to guide the light incident from the incident surface to a side of the emission surface. The light guide has a bent portion. The bent portion has a second surface configured to guide the light to the side of the emission surface in regions excluding a region between the incident surface and the emission surface.Type: ApplicationFiled: January 24, 2020Publication date: June 25, 2020Inventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Hajime KAWANO, Shahedul HOQUE
-
Patent number: 10679821Abstract: A charged particle beam device includes a scintillator and a light guide. The light guide has an incident surface configured to incident a light from the scintillator, an emission surface configured to emit a light incident from the incident surface, and a first surface configured to guide the light incident from the incident surface to a side of the emission surface. The light guide has a bent portion. The bent portion has a second surface configured to guide the light to the side of the emission surface in regions excluding a region between the incident surface and the emission surface.Type: GrantFiled: January 24, 2020Date of Patent: June 9, 2020Assignee: Hitachi High-Tech CorporationInventors: Yoshifumi Sekiguchi, Shin Imamura, Hajime Kawano, Shahedul Hoque
-
Patent number: 10641607Abstract: A height detection apparatus is configured to project a pattern on a sample arranged at any of a plurality of reference positions and configured to detect a height of the sample. The apparatus includes: a projection optical system that generates a plurality of spatially separated light beams each having the pattern and projects the generated spatially separated light beams onto the sample; an imaging element that images the pattern reflected from the sample; a detection optical system that guides the pattern reflected from the sample to the imaging element; and at least one optical path length correction member disposed on an optical path different from an optical path having a shortest optical path length among a plurality of optical paths corresponding to the plurality of light beams at a position where the plurality of light beams is spatially separated.Type: GrantFiled: April 9, 2019Date of Patent: May 5, 2020Assignee: Hitachi High-Technologies CorporationInventors: Yoshifumi Sekiguchi, Naoya Nakai, Koichi Taniguchi, Makoto Suzuki