Patents by Inventor Kazumasa Takata
Kazumasa Takata 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: 20170115441Abstract: A multicolor display device realizes multicolor display with high color reproducibility which can be felt beautiful. A red light, a green light and a blue light are incident on a light guide body on which a picture pattern is formed from light sources as first light sources, and a white light is incident thereon from a light source as a second light source to display the picture pattern in multi-colors, thereby realizing beautiful display with good reproducibility of a white color.Type: ApplicationFiled: August 3, 2016Publication date: April 27, 2017Inventor: KAZUMASA TAKATA
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Publication number: 20170044981Abstract: A gas turbine combustor comprising a plurality of cooling air passages (27A) through which bled pressurized air flows from downstream of a combustion gas flow toward upstream, the plurality of cooling air passages (27A) being disposed in a wall portion (26) side by side and aligned in a flow direction of a combustion gas; wherein the plurality of cooling air passages (27A) are divided via a passage transition groove portion (33) into upstream cooling air passages (27A1) disposed closer to bled pressurized air inlet holes (30a) and downstream cooling air passages (27A2) disposed closer to bled pressurized air outlet holes (30b), and center lines (C1) of the upstream cooling air passages are non-collinear with center lines (C2) of the downstream cooling air passages.Type: ApplicationFiled: April 25, 2014Publication date: February 16, 2017Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yoshiaki Yamaguchi, Satoshi Mizukami, Tomoyuki Hirata, Junichiro Masada, Tetsu Konishi, Kazumasa Takata, Hiroyuki Yamazaki, Takuya Suzuki, Shinya Ishikawa
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Patent number: 9512781Abstract: In a cooling structure for a recovery-type air-cooled gas turbine combustor having a recovery-type air-cooling structure that bleeds, upstream of the combustor, and pressurizes compressed air supplied from a compressor, that uses the bled and pressurized air to cool a wall, and that recovers and reuses the bled and pressurized air as combustion air for burning fuel in the combustor together with a main flow of the compressed air, wall cooling in which cooling air is supplied to cooling air passages formed in the wall of the combustor to perform cooling involves a downstream wall region, closer to a turbine, that is cooled using the bled and pressurized air as the cooling air and an upstream wall region, closer to a burner, that is cooled using, as the cooling air, bled compressed air bled from a main flow of the compressed air through a housing inner space.Type: GrantFiled: August 10, 2011Date of Patent: December 6, 2016Assignees: MITSUBISHI HITACHI POWER SYSTEMS, LTD., TOHOKU ELECTRIC POWER CO., INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Shunsuke Torii, Yuya Fukunaga, Tetsu Konishi, Yoshiaki Nishimura, Yoshiaki Igarashi, Shinya Ishikawa
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Patent number: 9255490Abstract: Provided is a gas turbine capable of achieving high-speed startup of the gas turbine through quick operation control of an ACC system during startup of the gas turbine, improving the cooling efficiency of turbine stationary components, and quickly carrying out an operation required for cat back prevention during shutdown of the gas turbine.Type: GrantFiled: September 24, 2009Date of Patent: February 9, 2016Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., TOHOKU ELECTRIC POWER COMPANY, INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Yuya Fukunaga, Hiroki Takahashi, Masaki Satoh, Yoshiaki Nishimura, Norio Oogai, Souji Hasegawa, Masato Hayashi
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Publication number: 20150377055Abstract: Provided is a gas turbine capable of achieving high-speed startup of the gas turbine through quick operation control of an ACC system during startup of the gas turbine, improving the cooling efficiency of turbine stationary components, and quickly carrying out an operation required for cat back prevention during shutdown of the gas turbine.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., TOHOKU ELECTRIC POWER COMPANY, INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Yuya Fukunaga, Hiroki Takahashi, Masaki Satoh, Yoshiaki Nishimura, Norio Oogai, Souji Hasegawa, Masato Hayashi
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Publication number: 20150377056Abstract: Provided is a gas turbine capable of achieving high-speed startup of the gas turbine through quick operation control of an ACC system during startup of the gas turbine, improving the cooling efficiency of turbine stationary components, and quickly carrying out an operation required for cat back prevention during shutdown of the gas turbine.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., TOHOKU ELECTRIC POWER COMPANY, INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Yuya Fukunaga, Hiroki Takahashi, Masaki Satoh, Yoshiaki Nishimura, Norio Oogai, Souji Hasegawa, Masato Hayashi
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Publication number: 20150377054Abstract: Provided is a gas turbine capable of achieving high-speed startup of the gas turbine through quick operation control of an ACC system during startup of the gas turbine, improving the cooling efficiency of turbine stationary components, and quickly carrying out an operation required for cat back prevention during shutdown of the gas turbine.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., TOHOKU ELECTRIC POWER COMPANY, INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Yuya Fukunaga, Hiroki Takahashi, Masaki Satoh, Yoshiaki Nishimura, Norio Oogai, Souji Hasegawa, Masato Hayashi
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Patent number: 8593624Abstract: By using two probe optical systems for measurement by disposing the probe optical systems with a test object sandwiched therebetween, an optical path length of light transmitted through the test object which is identified locally is calculated using an interference signal thereof. In addition, a geometrical thickness of the same part is calculated by measuring positions of the probe optical systems, whereby two calculated values are obtained. Based on the values and a calculated value for a reference object, a refractive index distribution of the test object is obtained.Type: GrantFiled: January 21, 2010Date of Patent: November 26, 2013Assignee: Panasonic CorporationInventors: Yusuke Kusaka, Yohei Takechi, Atsushi Fukui, Seiji Hamano, Kazumasa Takata
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Publication number: 20130098063Abstract: In a cooling structure for a recovery-type air-cooled gas turbine combustor having a recovery-type air-cooling structure that bleeds, upstream of the combustor, and pressurizes compressed air supplied from a compressor, that uses the bled and pressurized air to cool a wall, and that recovers and reuses the bled and pressurized air as combustion air for burning fuel in the combustor together with a main flow of the compressed air, wall cooling in which cooling air is supplied to cooling air passages formed in the wall of the combustor to perform cooling involves a downstream wall region, closer to a turbine, that is cooled using the bled and pressurized air as the cooling air and an upstream wall region, closer to a burner, that is cooled using, as the cooling air, bled compressed air bled from a main flow of the compressed air through a housing inner space.Type: ApplicationFiled: August 10, 2011Publication date: April 25, 2013Applicants: TOHOKU ELECTRIC POWER CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Shunsuke Torii, Yuya Fukunaga, Tetsu Konishi, Yoshiaki Nishimura, Yoshiaki Igarashi, Shinya Ishikawa
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Publication number: 20110138818Abstract: Provided is a gas turbine capable of achieving high-speed startup of the gas turbine through quick operation control of an ACC system during startup of the gas turbine, improving the cooling efficiency of turbine stationary components, and quickly carrying out an operation required for cat back prevention during shutdown of the gas turbine.Type: ApplicationFiled: September 24, 2009Publication date: June 16, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., TOHOKU ELECTRIC POWER COMPANY, INC.Inventors: Satoshi Mizukami, Tatsuo Ishiguro, Junichiro Masada, Kazumasa Takata, Yuya Fukunaga, Hiroki Takahashi, Masaki Satoh, Yoshiaki Nishimura, Norio Oogai, Souji Hasegawa, Masato Hayashi
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Publication number: 20110051127Abstract: By using two probe optical systems for measurement by disposing the probe optical systems with a test object sandwiched therebetween, an optical path length of light transmitted through the test object which is identified locally is calculated using an interference signal thereof. In addition, a geometrical thickness of the same part is calculated by measuring positions of the probe optical systems, whereby two calculated values are obtained. Based on the values and a calculated value for a reference object, a refractive index distribution of the test object is obtained.Type: ApplicationFiled: January 21, 2010Publication date: March 3, 2011Applicant: PANASONIC CORPORATIONInventors: Yusuke Kusaka, Yohei Takechi, Atsushi Fukui, Seiji Hamano, Kazumasa Takata
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Patent number: 7821626Abstract: By diffracting light emitted from a collimator lens into lights of different orders by a transmission diffraction grating, applying the diffracted lights to a flat surface of an object, forming the light that has been reflected on the flat surface of the object and thereafter retransmitted through the transmission diffraction grating into an image in a position located apart from the optical axis of the outgoing light and measuring the angle of the object with respect to the optical axis of the collimator lens using the image location and the order of the light formed as the image, the angle in a wide range can be measured with a high resolving power.Type: GrantFiled: September 20, 2006Date of Patent: October 26, 2010Assignee: Panasonic CorporationInventors: Takashi Urashima, Kazumasa Takata, Tomotaka Furuta, Hidetoshi Utsuro
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Publication number: 20090231573Abstract: By diffracting light emitted from a collimator lens into lights of different orders by a transmission diffraction grating, applying the diffracted lights to a flat surface of an object, forming the light that has been reflected on the flat surface of the object and thereafter retransmitted through the transmission diffraction grating into an image in a position located apart from the optical axis of the outgoing light and measuring the angle of the object with respect to the optical axis of the collimator lens using the image location and the order of the light formed as the image, the angle in a wide range can be measured with a high resolving power.Type: ApplicationFiled: September 20, 2006Publication date: September 17, 2009Inventors: Takashi Urashima, Kazumasa Takata, Tomotaka Furuta, Hidetoshi Utsuro
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Patent number: 7561350Abstract: A method for manufacturing an optical unit (10) having an optical element (22) and a support member (12) supporting the optical element. According to the method, at least one of the optical element (22) and the support member (12) is deformed, securing the optical element (22) and the support member (12) together.Type: GrantFiled: December 15, 2005Date of Patent: July 14, 2009Assignee: Panasonic CorporationInventors: Yoshiro Kitamura, Seiji Kumazawa, Koji Funami, Kazumasa Takata, Yasuo Nishihara
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Publication number: 20080144196Abstract: Provided is a method for manufacturing an optical unit (10) having an optical element (22) and a support member (12) supporting the optical element. According to the method, at least one of the optical element (22) and the support member (12) is deformed, securing the optical element (22) and the support member (12) together.Type: ApplicationFiled: December 15, 2005Publication date: June 19, 2008Inventors: Yoshiro Kitamura, Seiji Kumazawa, Koji Funami, Kazumasa Takata, Yasuo Nishihara
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Patent number: 7379172Abstract: An inspection method for evaluating the performance of an optical component at high precision is provided. According to the inspection method, a first light beam 24 and a second light beam 26 both having different phases are generated from light which has passed through an optical component 18, and are interfered with each other to form an interference region 30. A linear line 66, a linear line 70 and linear lines 72 are set within the interference region 30 so as to determine a distribution of light intensities on each of the linear lines 72. Then, a frequency corresponding to the maximal light intensity is determined. Further, an approximated liner line or an approximated curved line is determined from a plurality of frequencies determined for each of the linear line 72. Then, the aberration of the optical component is evaluated based on the coefficient of the approximated linear or curved line.Type: GrantFiled: December 28, 2005Date of Patent: May 27, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazumasa Takata, Hidetoshi Utsuro, Tomotaka Furuta, Takashi Urashima
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Publication number: 20060192977Abstract: An inspection method for evaluating the performance of an optical component at high precision is provided. According to the inspection method, a first light beam 24 and a second light beam 26 both having different phases are generated from light which has passed through an optical component 18, and are interfered with each other to form an interference region 30. A linear line 66, a linear line 70 and linear lines 72 are set within the interference region 30 so as to determine a distribution of light intensities on each of the linear lines 72. Then, a frequency corresponding to the maximal light intensity is determined. Further, an approximated liner line or an approximated curved line is determined from a plurality of frequencies determined for each of the linear line 72. Then, the aberration of the optical component is evaluated based on the coefficient of the approximated linear or curved line.Type: ApplicationFiled: December 28, 2005Publication date: August 31, 2006Inventors: Kazumasa Takata, Hidetoshi Utsuro, Tomotaka Furuta, Takashi Urashima
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Patent number: 6809829Abstract: A lens evaluation method includes diffracting light derived from a lens so that two diffracted rays of different orders (e.g., a 0th-order diffracted ray and a +1st-order diffracted ray) interfere with each other, thereby obtaining a shearing interference figure, and changing phases of the diffracted rays. The method also includes in the shearing interference figure, determining phases of light intensity changes at a plurality of measuring points on a measuring line which passes through a midpoint of a line segment interconnecting optical axes of the two diffracted rays, and determining characteristics (defocus amount, coma, astigmatism, spherical aberration and a higher-order aberration) of the lens based on the phases.Type: GrantFiled: May 18, 2000Date of Patent: October 26, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazumasa Takata, Masahiro Nakajo, Kanji Nishii
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Patent number: 6538749Abstract: A method for evaluating aberrations of an optical element such as optical head for use with an optical system such as DVD. In this method, light is transmitted through the optical element and then diffracted into 0, ±1, ±2, . . . order diffraction lights, for example. Among others, first and second lights (e.g., 0 and +1, 0 and −1, +1 and −1, or 0 and ±1 order diffracted lights) are overlapped to form an image shared by the first and second lights. Then, light intensity at first and second points in the shared image are detected. At this moment, light intensity at the first and second points are changed. Then, a phase difference in light intensity of between first and second points is determined. Using the phase difference, aberrations of the optical element are determined.Type: GrantFiled: July 27, 1999Date of Patent: March 25, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazumasa Takata, Masahiro Nakajo, Kanji Nishii
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Patent number: 6068382Abstract: A highly efficient, luminous and energy-saving panel-form illuminating system suitable for mass-production, comprising at least a photoconductor, a linear light source at one side of the photoconductor, and a reflector; wherein grooves or protrusions are formed on the bottom surface of the photoconductor.Type: GrantFiled: July 7, 1999Date of Patent: May 30, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Fukui, Kanji Nishii, Kenji Takamoto, Masami Ito, Kazumasa Takata, Ken Tatsuta, Koki Nakabayashi, Hiroshi Watanabe