Patents by Inventor Takashi KUSAMA
Takashi KUSAMA 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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Patent number: 11079686Abstract: An excimer laser apparatus according to the present disclosure includes an etalon spectrometer configured to measure a fringe waveform of a laser beam; and a controller configured to obtain area of a first ratio in a spectral space obtained based on a result of the measurement by the etalon spectrometer, calculate a first spectral line width of the laser beam based on the obtained area of the first ratio, and calibrate a first spectral line width based on a correlation function representing correlation between the first spectral line width and a second spectral line width of the laser beam measured by a reference meter.Type: GrantFiled: May 11, 2020Date of Patent: August 3, 2021Assignee: Gigaphoton Inc.Inventors: Keisuke Ishida, Masato Moriya, Natsuhiko Kouno, Takeshi Asayama, Takashi Kusama
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Publication number: 20200274315Abstract: An excimer laser apparatus according to the present disclosure includes an etalon spectrometer configured to measure a fringe waveform of a laser beam; and a controller configured to obtain area of a first ratio in a spectral space obtained based on a result of the measurement by the etalon spectrometer, calculate a first spectral line width of the laser beam based on the obtained area of the first ratio, and calibrate a first spectral line width based on a correlation function representing correlation between the first spectral line width and a second spectral line width of the laser beam measured by a reference meter.Type: ApplicationFiled: May 11, 2020Publication date: August 27, 2020Applicant: Gigaphoton Inc.Inventors: Keisuke ISHIDA, Masato MORIYA, Natsuhiko KOUNO, Takeshi ASAYAMA, Takashi KUSAMA
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Patent number: 10650251Abstract: In an industrial machine, the work safety is further improved by eliminating blind spots from an image displayed on a monitor. A hydraulic excavator 1 which is the industrial machine is equipped with monitoring cameras 15F, 15B, 15L, 15R mounted in the respective places of a revolving upperstructure 3 in order to capture images for monitoring. A monitor 20 displays camera images 21F, 21B, 21L, 21R obtained by the cameras as well as an icon image 21C of an image illustration of the hydraulic excavator 1. The cameras 15F, 15L, 15R are mounted at the distal ends of support arms 40F, 40L, 40R to be located in positions jutting from a revolving upperstructure main unit 3a of the revolving upperstructure 3, so that a hidden area under the underside of a catwalk 14 provided on the revolving upperstructure 3 falls within the field of view.Type: GrantFiled: October 12, 2018Date of Patent: May 12, 2020Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Yoichi Kowatari, Hidefumi Ishimoto, Moritaka Oota, Yoshihiro Inanobe, Hiroyoshi Tanaka, Kouji Fujita, Takashi Kusama
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Publication number: 20190042858Abstract: In an industrial machine, the work safety is further improved by eliminating blind spots from an image displayed on a monitor. A hydraulic excavator 1 which is the industrial machine is equipped with monitoring cameras 15F, 15B, 15L, 15R mounted in the respective places of a revolving upperstructure 3 in order to capture images for monitoring. A monitor 20 displays camera images 21F, 21B, 21L, 21R obtained by the cameras as well as an icon image 21C of an image illustration of the hydraulic excavator 1. The cameras 15F, 15L, 15R are mounted at the distal ends of support arms 40F, 40L, 40R to be located in positions jutting from a revolving upperstructure main unit 3a of the revolving upperstructure 3, so that a hidden area under the underside of a catwalk 14 provided on the revolving upperstructure 3 falls within the field of view.Type: ApplicationFiled: October 12, 2018Publication date: February 7, 2019Inventors: Yoichi KOWATARI, Hidefumi ISHIMOTO, Moritaka OOTA, Yoshihiro INANOBE, Hiroyoshi TANAKA, Kouji FUJITA, Takashi KUSAMA
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Patent number: 10145087Abstract: To recognize an obstacle such as a working face which may be touched by a revolving upperstructure including a height position thereof at the time of a swing control. A plurality of first cameras 13 for forming bird's eye views which photograph obliquely lower parts of directions different from each other are arranged in a revolving upperstructure 3, a composite bird's eye view 20 is displayed on a display 15, second cameras 16R, 16L for photographing through images including corner parts from a rear end of the revolving upperstructure 3 to side parts within a visual field range are arranged in lower part positions of a swing frame 3a of the revolving upperstructure 3 so as to rotate following swing of the revolving upperstructure 3, and corner part through images 30R, 30L are displayed on the display 15 so as to be superimposed on the composite bird's eye view 20.Type: GrantFiled: July 16, 2015Date of Patent: December 4, 2018Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Yoichi Kowatari, Kouji Fujita, Yoshihiro Inanobe, Hiroyoshi Tanaka, Takashi Kusama, Moritaka Oota, Hidefumi Ishimoto
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Patent number: 9882343Abstract: A narrow band laser apparatus may include: a laser resonator; a pair of discharge electrodes; a power supply; a first wavelength measurement device configured to output a first measurement result; a second wavelength measurement device configured to output a second measurement result; and a control unit. The control unit calibrates the first measurement result, based on a difference between the second measurement result derived when the control unit controls the power supply to apply a pulsed voltage to the pair of discharge electrodes with a first repetition frequency and the second measurement result derived when the control unit controls the power supply to apply the pulsed voltage to the pair of discharge electrodes with a second repetition frequency, the second repetition frequency being higher than the first repetition frequency.Type: GrantFiled: April 13, 2017Date of Patent: January 30, 2018Assignee: Gigaphoton Inc.Inventors: Masato Moriya, Takeshi Ohta, Keisuke Ishida, Takashi Kusama
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Patent number: 9783960Abstract: To provide a driving device capable of improving the operability of a plurality of single rod hydraulic cylinders. The present invention takes a construction provided with a closed circuit A in which first and third hydraulic pumps 12, 14 and a boom cylinder 1 are connected through selector valves 43a, 45a in a closed-circuit fashion, a plurality of open circuits E, F provided with second and fourth hydraulic pumps 13, 15 and selector valves 44a, 46a that switch the supply destinations of hydraulic oils flowing out from the second and fourth hydraulic pumps 13, 15, and a connection passage 301 connected to sides of the selector valves 44a, 46a from which sides hydraulic oil flows out, and connected to the closed circuit A.Type: GrantFiled: September 1, 2014Date of Patent: October 10, 2017Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Juri Shimizu, Teppei Saitoh, Mariko Mizuochi, Kenji Hiraku, Akinori Ishii, Hiromasa Takahashi, Takashi Kusama
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Publication number: 20170222391Abstract: A narrow band laser apparatus may include: a laser resonator; a pair of discharge electrodes; a power supply; a first wavelength measurement device configured to output a first measurement result; a second wavelength measurement device configured to output a second measurement result; and a control unit. The control unit calibrates the first measurement result, based on a difference between the second measurement result derived when the control unit controls the power supply to apply a pulsed voltage to the pair of discharge electrodes with a first repetition frequency and the second measurement result derived when the control unit controls the power supply to apply the pulsed voltage to the pair of discharge electrodes with a second repetition frequency, the second repetition frequency being higher than the first repetition frequency.Type: ApplicationFiled: April 13, 2017Publication date: August 3, 2017Applicant: Gigaphoton Inc.Inventors: Masato MORIYA, Takeshi OHTA, Keisuke ISHIDA, Takashi KUSAMA
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Publication number: 20170016210Abstract: To recognize an obstacle such as a working face which may be touched by a revolving upperstructure including a height position thereof at the time of a swing control. A plurality of first cameras 13 for forming bird's eye views which photograph obliquely lower parts of directions different from each other are arranged in a revolving upperstructure 3, a composite bird's eye view 20 is displayed on a display 15, second cameras 16R, 16L for photographing through images including corner parts from a rear end of the revolving upperstructure 3 to side parts within a visual field range are arranged in lower part positions of a swing frame 3a of the revolving upperstructure 3 so as to rotate following swing of the revolving upperstructure 3, and corner part through images 30R, 30L are displayed on the display 15 so as to be superimposed on the composite bird's eye view 20.Type: ApplicationFiled: July 16, 2015Publication date: January 19, 2017Inventors: Yoichi KOWATARI, Kouji FUJITA, Yoshihiro INANOBE, Hiroyoshi TANAKA, Takashi KUSAMA, Moritaka OOTA, Hidefumi ISHIMOTO
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Publication number: 20160217331Abstract: In an industrial machine, the work safety is further improved by eliminating blind spots from an image displayed on a monitor. A hydraulic excavator 1 which is the industrial machine is equipped with monitoring cameras 15F, 15B, 15L, 15R mounted in the respective places of a revolving upperstructure 3 in order to capture images for monitoring. A monitor 20 displays camera images 21F, 21B, 21L, 21R obtained by the cameras as well as an icon image 21C of an image illustration of the hydraulic excavator 1. The cameras 15F, 15L, 15R are mounted at the distal ends of support arms 40F, 40L, 40R to be located in positions jutting from a revolving upperstructure main unit 3a of the revolving upperstructure 3, so that a hidden area under the underside of a catwalk 14 provided on the revolving upperstructure 3 falls within the field of view.Type: ApplicationFiled: January 20, 2015Publication date: July 28, 2016Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Yoichi KOWATARI, Hidefumi ISHIMOTO, Moritaka OOTA, Yoshihiro INANOBE, Hiroyoshi TANAKA, Kouji FUJITA, Takashi KUSAMA
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Publication number: 20160032565Abstract: To provide a driving device capable of improving the operability of a plurality of single rod hydraulic cylinders. The present invention takes a construction provided with a closed circuit A in which first and third hydraulic pumps 12, 14 and a boom cylinder 1 are connected through selector valves 43a, 45a in a closed-circuit fashion, a plurality of open circuits E, F provided with second and fourth hydraulic pumps 13, 15 and selector valves 44a, 46a that switch the supply destinations of hydraulic oils flowing out from the second and fourth hydraulic pumps 13, 15, and a connection passage 301 connected to sides of the selector valves 44a, 46a from which sides hydraulic oil flows out, and connected to the closed circuit A.Type: ApplicationFiled: September 1, 2014Publication date: February 4, 2016Inventors: Juri SHIMIZU, Teppei SAITOH, Mariko MIZUOCHI, Kenji HIRAKU, Akinori ISHII, Hiromasa TAKAHASHI, Takashi KUSAMA