Patents by Inventor Yasuki Sakurai
Yasuki Sakurai 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: 10409011Abstract: A detection device for detecting a power of an input light is provided with a light-receiving module that outputs an electrical signal according to a power of an input light received at a light-receiving surface and an optical system that collimates and guides to the light-receiving surface the input light from the outside. Moreover, this detection device is provided with a structure that decreases an incidence angle of the input light at an interface between the optical system and the light-receiving surface.Type: GrantFiled: August 22, 2018Date of Patent: September 10, 2019Assignee: Santec CorporationInventors: Yasuki Sakurai, Shinichiro Asada
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Patent number: 10401579Abstract: A detection device for detecting a power of an input light is provided with a light-receiving module that outputs an electrical signal according to a power of an input light received at a light-receiving surface and an optical system that collimates and guides to the light-receiving surface the input light from the outside. Moreover, this detection device is provided with a structure that decreases an incidence angle of the input light at an interface between the optical system and the light-receiving surface.Type: GrantFiled: August 4, 2017Date of Patent: September 3, 2019Assignee: Santec CorporationInventors: Yasuki Sakurai, Shinichiro Asada
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Patent number: 10321492Abstract: A wireless communication apparatus for performing wireless communication between wireless devices via a wireless communication network, wherein the wireless communication apparatus comprises: a packet processor for generating a first packet including first control information and discrimination information for discriminating between the first control information for connecting to the wireless communication network a set wireless device, which is a wireless device for which the setting of instrument information required for accessing the wireless communication network has been performed, and second control information for connecting to the wireless communication network a setting-required wireless device, which is a wireless device for which there is a need to set instrument information, and a second packet including the discrimination information and the second control information; and a wireless communication unit for transmitting the first packet and the second packet generated by the packet processor to thType: GrantFiled: August 30, 2012Date of Patent: June 11, 2019Assignee: Yokogawa Electric CorporationInventors: Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
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Patent number: 10305793Abstract: A communication device conforming with plural communication standards and having a storage storing a plurality of virtual stacks each having an application program and communication program that implements a protocol stack for communication by the application program. An executor executes the virtual stacks, and a switching controller switches the virtual stacks to be executed by performing a first processing in which at least one part of at least one of the virtual stacks is read from storage and stored into a memory of, and executed by, the executor. Then, in accordance with free capacity in the memory, at least one part of at least one of the virtual stacks executed in the first processing is deleted from memory. In a second processing at least one part of at least one of the virtual stacks is read from the storage and stored into the memory of, and executed by, the executor.Type: GrantFiled: May 29, 2013Date of Patent: May 28, 2019Assignee: Yokogawa Electric CorporationInventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
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Publication number: 20180356605Abstract: A detection device for detecting a power of an input light is provided with a light-receiving module that outputs an electrical signal according to a power of an input light received at a light-receiving surface and an optical system that collimates and guides to the light-receiving surface the input light from the outside. Moreover, this detection device is provided with a structure that decreases an incidence angle of the input light at an interface between the optical system and the light-receiving surface.Type: ApplicationFiled: August 22, 2018Publication date: December 13, 2018Applicant: Santec CorporationInventors: Yasuki Sakurai, Shinichiro Asada
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Patent number: 10127891Abstract: A system includes a spatial light modulator and a controller. The spatial light modulator is configured to perform phase modulation of a light that passes through a liquid crystal by applying individual voltages to the liquid crystal from each of a plurality of electrodes. The controller is configured to control the voltages applied to the liquid crystal from each of the plurality of electrodes based on phase image data. The phase image data represents values of each pixel corresponding to each of the plurality of electrodes by predetermined gradations. The controller converts gradation values, which are the values of each pixel, into voltages input to the electrodes corresponding to each pixel. The controller is configured to change a fluctuation width from a minimum value to a maximum value of the input voltages corresponding to a fluctuation width from a minimum value to a maximum value of the gradation values.Type: GrantFiled: October 26, 2016Date of Patent: November 13, 2018Assignee: Santec CorporationInventor: Yasuki Sakurai
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Patent number: 10126510Abstract: A detection device is provided with a holding body that holds a light-receiving module, an optical fiber pigtail, and a lens. The light-receiving module is provided with a light-receiving element and a stem that supports the light-receiving element. The lens collimates an input light from one end of an input fiber and guides a portion of the input light to the light-receiving element. The lens separates the input light into a transmitted light and a reflected light, guiding the transmitted light to the light-receiving element and guiding the reflected light to an output fiber. The light-receiving element has a center of a light-receiving surface thereof disposed in a position away from an axis of the stem.Type: GrantFiled: August 4, 2017Date of Patent: November 13, 2018Assignee: Santec CorporationInventor: Yasuki Sakurai
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Publication number: 20180259713Abstract: An optical power attenuator includes: a MEMS package storing a MEMS element that can control a reflection angle of light by a mirror; a capillary member provided to one end of a two-core optical fiber that transmits the light and that has an end surface on a side that inputs/outputs the light to the two-core optical fiber tilted at a predetermined angle relative to an optical axis of the two-core optical fiber; and a lens that causes a light emitted from one of the optical fibers of the two-core optical fiber to become incident on the MEMS element via the capillary member and guides the reflected light reflected by the mirror of the MEMS element to the other optical fiber of the two-core optical fiber.Type: ApplicationFiled: January 9, 2018Publication date: September 13, 2018Applicant: Santec CorporationInventor: Yasuki Sakurai
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Patent number: 10054838Abstract: A light control system is provided with a spatial light modulator of a liquid-crystal type, an input unit, and a controller. The input unit is configured to input a light to the spatial light modulator. The controller is configured to cause the spatial light modulator to function as a diffraction grating by electrically controlling the spatial light modulator. The controller is configured to change a path of a diffracted light from the spatial light modulator corresponding to the light input from the input unit by changing a shape of the diffraction grating.Type: GrantFiled: October 26, 2016Date of Patent: August 21, 2018Assignee: Santec CorporationInventor: Yasuki Sakurai
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Patent number: 10025034Abstract: An integrated optical device is mounted with two optical fibers that transmit a light and, as functional components in a space of a housing forming an optical path from one of the optical fibers to the other light, is provided with an optical power attenuator that attenuates, using vignetting, a light incident from the one optical fiber or a light emitted from the other optical fiber and a tunable filter that selects a light of a predetermined wavelength from among the light incident from the one optical fiber and emits this selected light from the other optical fiber.Type: GrantFiled: February 20, 2018Date of Patent: July 17, 2018Assignee: Santec CorporationInventor: Yasuki Sakurai
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Publication number: 20180039030Abstract: A detection device is provided with a holding body that holds a light-receiving module, an optical fiber pigtail, and a lens. The light-receiving module is provided with a light-receiving element and a stem that supports the light-receiving element. The lens collimates an input light from one end of an input fiber and guides a portion of the input light to the light-receiving element. The lens separates the input light into a transmitted light and a reflected light, guiding the transmitted light to the light-receiving element and guiding the reflected light to an output fiber. The light-receiving element has a center of a light-receiving surface thereof disposed in a position away from an axis of the stem.Type: ApplicationFiled: August 4, 2017Publication date: February 8, 2018Applicant: Santec CorporationInventor: Yasuki Sakurai
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Publication number: 20180041271Abstract: A detection device is provided with a light-receiving module configured to output an electrical signal according to a power of an input light received at a light-receiving surface, an optical lens configured to collimate and guide to the light-receiving surface the input light from the outside, and at least one condensing unit that is provided in a path of the input light between the optical lens and the light-receiving surface and configured to decrease a beam diameter of the input light at the light-receiving surface.Type: ApplicationFiled: August 4, 2017Publication date: February 8, 2018Applicant: Santec CorporationInventors: Yasuki Sakurai, Naoyuki Mekada
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Publication number: 20180039031Abstract: A detection device for detecting a power of an input light is provided with a light-receiving module that outputs an electrical signal according to a power of an input light received at a light-receiving surface and an optical system that collimates and guides to the light-receiving surface the input light from the outside. Moreover, this detection device is provided with a structure that decreases an incidence angle of the input light at an interface between the optical system and the light-receiving surface.Type: ApplicationFiled: August 4, 2017Publication date: February 8, 2018Applicant: Santec CorporationInventors: Yasuki Sakurai, Shinichiro Asada
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Publication number: 20170316756Abstract: A system includes a spatial light modulator and a controller. The spatial light modulator is configured to perform phase modulation of a light that passes through a liquid crystal by applying individual voltages to the liquid crystal from each of a plurality of electrodes. The controller is configured to control the voltages applied to the liquid crystal from each of the plurality of electrodes based on phase image data. The phase image data represents values of each pixel corresponding to each of the plurality of electrodes by predetermined gradations. The controller converts gradation values, which are the values of each pixel, into voltages input to the electrodes corresponding to each pixel. The controller is configured to change a fluctuation width from a minimum value to a maximum value of the input voltages corresponding to a fluctuation width from a minimum value to a maximum value of the gradation values.Type: ApplicationFiled: October 26, 2016Publication date: November 2, 2017Applicant: Santec CorporationInventor: Yasuki Sakurai
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Publication number: 20170315422Abstract: A light control system is provided with a spatial light modulator of a liquid-crystal type, an input unit, and a controller. The input unit is configured to input a light to the spatial light modulator. The controller is configured to cause the spatial light modulator to function as a diffraction grating by electrically controlling the spatial light modulator. The controller is configured to change a path of a diffracted light from the spatial light modulator corresponding to the light input from the input unit by changing a shape of the diffraction grating.Type: ApplicationFiled: October 26, 2016Publication date: November 2, 2017Applicant: Santec CorporationInventor: Yasuki Sakurai
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Publication number: 20170277758Abstract: A maintenance information sharing device includes a maintenance record obtainer configured to obtain a maintenance record of a maintenance target, a maintenance record storage configured to associate the maintenance record obtained by the maintenance record obtainer with identification information for identifying the maintenance target, the maintenance record storage storing the maintenance record associated with the identification information, a maintenance information generator configured to generate maintenance information based on the maintenance record associated with the identification information and stored by the maintenance record storage, a maintenance information storage which stores the maintenance information generated by the maintenance information generator, a searcher configured to search the maintenance information stored by the maintenance information storage based on the identification information, and a maintenance information provider configured to provide the maintenance information searType: ApplicationFiled: March 21, 2017Publication date: September 28, 2017Applicant: Yokogawa Electric CorporationInventors: Yosuke ISHII, Yasuki SAKURAI, Kenji OISHI
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Patent number: 9733979Abstract: A communication device communicating in conformance with a prescribed communication standard. The device includes a storage storing at least a first virtual program that includes a program implementing a first function of the communication device and a second virtual program that includes a program implementing a second function of the communication device. It also includes an executor configured to successively execute the first and second virtual programs, and a switching controller configured to read at least a part of either one of the first and second virtual programs from the storage, to store the part of either one of the first and second virtual programs into a memory of the executor, to execute the part of either one of the first and second virtual programs in the executor, thereby, to switch the first and second virtual programs to be executed in the executor.Type: GrantFiled: May 24, 2013Date of Patent: August 15, 2017Assignee: Yokogawa Electric CorporationInventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
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Patent number: 9720168Abstract: A wavelength selective optical switch includes a light input/output unit having a plurality of input/output ports, a polarization plane-independent wavelength dispersion element that splits incident light input from the optical input/output unit into spatially different angles for each wavelength, and synthesizes emergent light from different directions and outputs the light to the optical input/output unit, a condenser element that condenses the light split by the wavelength splitting element, a polarization splitter that splits incident light incident via the condenser element according to a polarization component to result in first and second light beams, aligns a polarization direction by rotating a polarization direction of one of the beams, and synthesizes the incident light by rotating one polarization direction of the emergent light of the same wavelength among the first and second reflected light beams, and a space phase modulation element.Type: GrantFiled: July 10, 2013Date of Patent: August 1, 2017Assignee: Santec CorporationInventor: Yasuki Sakurai
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Patent number: 9704455Abstract: An information display apparatus includes an image pick-up unit configured to picking up an image, a display unit configured to display the image picked up by the image pick-up unit, a first correcting unit configured to correct the image picked up by the image pick-up unit to generate a first image, a second correcting unit configured to correct the image picked up by the image pick-up unit to generate a second image, a recognizing unit configured to recognize the second image generated by the second correcting unit, and a display control unit configured to display an additional information according to a result of the recognition performed by the recognizing unit with superimposing the additional information on the first image generated by the first correcting unit on the display unit.Type: GrantFiled: May 21, 2014Date of Patent: July 11, 2017Assignee: Yokogawa Electric CorporationInventors: Yasuki Sakurai, Yousuke Ishii, Kenji Oishi
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Patent number: 9560637Abstract: A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link.Type: GrantFiled: April 10, 2013Date of Patent: January 31, 2017Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Kazunori Miyazawa, Yukiyo Akisada, Yasuki Sakurai