Patents by Inventor Yasunori Murata
Yasunori Murata 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: 20140204728Abstract: A node equipment includes a receiver, a processor, a memory and a transmitter. The node equipment is relayed by a plurality of relay devices with a server. The receiver receives a frame from adjacent node equipment. The processor generates a wait number by incrementing a number of hops for each of the relay devices, when the number of hops to the adjacent node equipment is reported with a synchronization request, the number of hops being generated by designating each of the plurality of relay devices as a starting point. The memory stores the wait number in association with an identifier of the relay device. The transmitter transmits a data frame in which the server is designated as an address. The processor outputs to the transmitter a data frame in which a relay device having a relatively small wait number stored in the memory is designated as a relay destination.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: FUJITSU LIMITEDInventors: Toshitsugu Kobayashi, Yoshinobu Shimokawa, Satoshi Hamanaka, SYOICHI URATA, Kenji MAEDA, YOSHIYUKI JUFUKU, Yasunori Murata, YUZURU SHIMOMURA
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Patent number: 7944552Abstract: A method for displaying a result of measurement of eccentricity in an optical system is provided where an amount of eccentricity for each lens element's surface in a lens system can be displayed and where the amount of eccentricity displayed can be a magnified amount of eccentricity. Additionally a sectional view of the lens system can be displayed using scaling factor.Type: GrantFiled: August 4, 2008Date of Patent: May 17, 2011Assignee: Canon Kabushiki KaishaInventor: Yasunori Murata
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Patent number: 7932952Abstract: An optical performance is deteriorated by a minute phase difference of transmission wave front of an ND filter. In a light quantity adjusting device which includes an ND filter (P1) for attenuating a quantity of light passing through an aperture formed by diaphragm blades (S11 and S12) and in which a cover ratio of the aperture by the ND filter (P1) is changed, setting is conducted such that a phase difference between lights with a predetermined wavelength ? which pass through regions (N11, N12, and N13) of the ND filter (P1) with different transmittances inside the aperture becomes substantially 0?, substantially 1?, or substantially 2? in a state in which the aperture is completely covered with the ND filter (P1).Type: GrantFiled: December 13, 2002Date of Patent: April 26, 2011Assignee: Canon Kabushiki KaishaInventors: Yasunori Murata, Takeshi Koyama
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Patent number: 7511803Abstract: A method for displaying a result of measurement of eccentricity in an optical system is provided where an amount of eccentricity for each lens element's surface in a lens system can be displayed and where the amount of eccentricity displayed can be a magnified amount of eccentricity. Additionally a sectional view of the lens system can be displayed using scaling factor.Type: GrantFiled: May 26, 2005Date of Patent: March 31, 2009Assignee: Canon Kabushiki KaishaInventor: Yasunori Murata
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Publication number: 20080310275Abstract: A method for displaying a result of measurement of eccentricity in an optical system is provided where an amount of eccentricity for each lens element's surface in a lens system can be displayed and where the amount of eccentricity displayed can be a magnified amount of eccentricity. Additionally a sectional view of the lens system can be displayed using scaling factor.Type: ApplicationFiled: August 4, 2008Publication date: December 18, 2008Applicant: CANON KABUSHIKI KAISHAInventor: Yasunori Murata
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Patent number: 7440089Abstract: Disclosed is a measuring method which can measure the decentering of an axis by the measurement of a two-dimensional curved surface profile. This method has a first step of measuring a profile of a examined surface by a probe from a first reference position which is a position separate by a predetermined amount from a predetermined position on the examined surface of a subject lens, a second step of measuring the profile of the examined surface by scanning the examined surface by the probe from the second reference position which is a position separate by a predetermined amount from said predetermined position in a route opposite to the scanning direction of said first step after a rotation of the subject lens; and the step of obtaining the decentering amount of the examined surface by the use of the measurement results obtained at the first and second steps.Type: GrantFiled: March 17, 2006Date of Patent: October 21, 2008Assignee: Canon Kabushiki KaishaInventor: Yasunori Murata
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Patent number: 7307708Abstract: A surface to be tested and an optical system for projecting an index to an apparent spherical center position of the surface to be tested are moved relative to each other and an eccentric quantity of the surface to be tested is calculated from an movement quantity. A focal distance of an optical system is changed according to an apparent radius of curvature of each surface to be tested, which is calculated in advance. A reflection image on a surface to be tested, which is to be measured, is determined from the apparent radius of curvature of each surface to be tested, which is calculated in advance. Thus, an eccentric quantity of the entire lens system is accurately measured.Type: GrantFiled: November 9, 2004Date of Patent: December 11, 2007Assignee: Canon Kabushiki KaishaInventor: Yasunori Murata
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Publication number: 20060209294Abstract: Disclosed is a measuring method which can measure the decentering of an axis by the measurement of a two-dimensional curved surface profile. This method has a first step of measuring a profile of a examined surface by a probe from a first reference position which is a position separate by a predetermined amount from a predetermined position on the examined surface of a subject lens, a second step of measuring the profile of the examined surface by scanning the examined surface by the probe from the second reference position which is a position separate by a predetermined amount from said predetermined position in a route opposite to the scanning direction of said first step after a rotation of the subject lens; and the step of obtaining the decentering amount of the examined surface by the use of the measurement results obtained at the first and second steps.Type: ApplicationFiled: March 17, 2006Publication date: September 21, 2006Inventor: Yasunori Murata
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Patent number: 7042662Abstract: To provide an ND filter and a light amount adjusting device, in which a deterioration of optical performance of an optical system is small, and in addition, an optical system having the light amount adjusting device, and an optical device having the optical system. More specifically, an ND filter according to the present invention includes: a base that transmits light having a predetermined wavelength ?; and a filter member selectively formed on the base, in which: a transmittance of the filter member gradually changes in a region in a predetermined direction; and a phase difference which is produced between light transmitting through the filter member and light transmitting through a region on the base in which the filter member is not formed is ?/5 or less in a boundary of the filter member.Type: GrantFiled: December 23, 2003Date of Patent: May 9, 2006Assignee: Canon Kabushiki KaishaInventors: Yasunori Murata, Susumu Abe, Daisuke Ito
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Publication number: 20050264795Abstract: A method for displaying a result of measurement of eccentricity in an optical system is provided where an amount of eccentricity for each lens element's surface in a lens system can be displayed and where the amount of eccentricity displayed can be a magnified amount of eccentricity. Additionally a sectional view of the lens system can be displayed using scaling factor.Type: ApplicationFiled: May 26, 2005Publication date: December 1, 2005Applicant: Canon Kabushiki KaishaInventor: Yasunori Murata
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Publication number: 20050128468Abstract: A surface to be tested and an optical system for projecting an index to an apparent spherical center position of the surface to be tested are moved relative to each other and an eccentric quantity of the surface to be tested is calculated from an movement quantity. A focal distance of an optical system is changed according to an apparent radius of curvature of each surface to be tested, which is calculated in advance. A reflection image on a surface to be tested, which is to be measured, is determined from the apparent radius of curvature of each surface to be tested, which is calculated in advance. Thus, an eccentric quantity of the entire lens system is accurately measured.Type: ApplicationFiled: November 9, 2004Publication date: June 16, 2005Applicant: CANON KABUSHIKI KAISHAInventor: Yasunori Murata
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Patent number: 6867916Abstract: A compact magnification-varying viewfinder optical system includes an objective lens unit for forming a primary image, the objective lens unit having at least one curved reflection surface arranged to reflect a light flux and a lens surface, and an eyepiece lens unit for observing the primary image, wherein an optical power is imparted to the curved reflection surface.Type: GrantFiled: December 29, 1995Date of Patent: March 15, 2005Assignee: Canon Kabushiki KaishaInventors: Takeshi Koyama, Yasunori Murata
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Publication number: 20040135921Abstract: To provide an ND filter and a light amount adjusting device, in which a deterioration of optical performance of an optical system is small, and in addition, an optical system having the light amount adjusting device, and an optical device having the optical system. More specifically, an ND filter according to the present invention includes: a base that transmits light having a predetermined wavelength &lgr;; and a filter member selectively formed on the base, in which: a transmittance of the filter member gradually changes in a region in a predetermined direction; and a phase difference which is produced between light transmitting through the filter member and light transmitting through a region on the base in which the filter member is not formed is &lgr;/5 or less in a boundary of the filter member.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Inventors: Yasunori Murata, Susumu Abe, Daisuke Ito
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Patent number: 6709168Abstract: An optical unit includes photoelectric conversion modules, a plurality of adapter support members whose upper parts are rotatably supported, and a plurality of optical connector adapters attached to lower ends of the adapter support members so as to be arranged next to each other, the optical connector adapters being contained in the optical unit. The adapter support members are rotated separately so that the optical connector adapters are extracted outside from the optical unit with a space formed between each adjacent two of said optical connector adapters. Each of the optical connector adapters has insertion holes to which optical connectors of optical fibers extending from the photoelectric conversion modules and optical connectors of external optical fibers are connected.Type: GrantFiled: March 19, 2002Date of Patent: March 23, 2004Assignee: Fujitsu LimitedInventors: Hirofumi Imabayashi, Kenji Joko, Tsutomu Takahashi, Katsuya Fujii, Kazunori Omori, Yasunori Murata, Hideki Zenitani, Koichi Namimatsu
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Publication number: 20030086014Abstract: An optical performance is deteriorated by a minute phase difference of transmission wave front of an ND filter. In a light quantity adjusting device which includes an ND filter (P1) for attenuating a quantity of light passing through an aperture formed by diaphragm blades (S11 and S12) and in which a cover ratio of the aperture by the ND filter (P1) is changed, setting is conducted such that a phase difference between lights with a predetermined wavelength &lgr; which pass through regions (N11, N12, and N13) of the ND filter (P1) with different transmittances inside the aperture becomes substantially 0&lgr;, substantially 1&lgr;, or substantially 2&lgr; in a state in which the aperture is completely covered with the ND filter (P1).Type: ApplicationFiled: December 13, 2002Publication date: May 8, 2003Inventors: Yasunori Murata, Takeshi Koyama
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Publication number: 20030048999Abstract: An optical unit includes photoelectric conversion modules, a plurality of adapter support members whose upper parts are rotatably supported, and a plurality of optical connector adapters attached to lower ends of the adapter support members so as to be arranged next to each other, the optical connector adapters being contained in the optical unit. The adapter support members are rotated separately so that the optical connector adapters are extracted outside from the optical unit with a space formed between each adjacent two of said optical connector adapters. Each of the optical connector adapters has insertion holes to which optical connectors of optical fibers extending from the photoelectric conversion modules and optical connectors of external optical fibers are connected.Type: ApplicationFiled: March 19, 2002Publication date: March 13, 2003Inventors: Hirofumi Imabayashi, Kenji Joko, Tsutomu Takahashi, Katsuya Fujii, Kazunori Omori, Yasunori Murata, Hideki Zenitani, Koichi Namimatsu
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Patent number: 6496358Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.Type: GrantFiled: December 30, 1998Date of Patent: December 17, 2002Assignee: Fujitsu LimitedInventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Kazunori Oomori, Yoshiaki Tobimatsu, Yasunori Murata, Mitsuru Etou
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Publication number: 20020105399Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.Type: ApplicationFiled: December 30, 1998Publication date: August 8, 2002Inventors: YASUHISA KANEMARU, TAKAHISA YOSHIZUMI, KAZUNORI OOMORI, YOSHIAKI TOBIMATSU, YASUNORI MURATA, MITSURU ETOU
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Publication number: 20010048552Abstract: A compact magnification-varying viewfinder optical system includes an objective lens unit for forming a primary image, the objective lens unit having at least one curved reflection surface arranged to reflect a light flux and a lens surface, and an eyepiece lens unit for observing the primary image, wherein an optical power is imparted to the curved reflection surface.Type: ApplicationFiled: December 29, 1995Publication date: December 6, 2001Inventors: TAKESHI KOYAMA, YASUNORI MURATA
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Patent number: 5989405Abstract: A dresser includes a super-abrasive fixed by electroplating on a working face which is disposed perpendicular to the axis of rotation of the dresser, the height of protrusion of particles of the super-abrasive is 5 to 30% of an average diameter of the particles, and a process for producing such a dresser includes temporarily fixing the super-abrasive in an amount to form a single layer to a base metal by electroplating, removing loose stones in the temporarily fixed super-abrasive by a grinder or shaking, electroplating a surface having the temporarily fixed super-abrasive with a metal until thickness of the plating metal reaches height of the most protruded part of the super-abrasive or until particles of the super-abrasive are completely buried in the plating metal, and working the electroplated surface for abrasive protrusion to expose most protruded parts of the super-abrasive resulting in a high accuracy dresser which enables dressing of a polishing pad in a short time and eliminates the releasing of parType: GrantFiled: June 25, 1997Date of Patent: November 23, 1999Assignee: Asahi Diamond Industrial Co., Ltd.Inventors: Yasunori Murata, Kenji Kakui