Patents by Inventor Yuu Takiguchi
Yuu Takiguchi 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: 10067401Abstract: A beam expander includes a first lens unit including one of an SLM or a VFL, a second lens unit being optically coupled to the first lens unit and including one of an SLM or a VFL, and a control unit controlling focal lengths of the first and second lens units. A distance between the first and second lens units is invariable. The control unit controls the focal lengths of the first and second lens units such that a light diameter D1 of light input to the first lens unit and a light diameter D2 of light output from the second lens unit are different from each other.Type: GrantFiled: April 18, 2013Date of Patent: September 4, 2018Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Yuu Takiguchi
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Publication number: 20180161923Abstract: In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths of the laser light, a value of each wavelength, and incident conditions of the laser light are acquired (step S101), the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set (S104), and a light condensing control pattern to be provided for the laser light is set for each light condensing point (S107). Then, a modulation pattern to be presented in the spatial light modulator is designed in consideration of the light condensing control pattern (S108). Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state on the light condensing point, a propagation function to which a phase pattern opposite to the light condensing control pattern is added is used.Type: ApplicationFiled: December 28, 2017Publication date: June 14, 2018Inventors: Naoya Matsumoto, Yuu Takiguchi, Taro Ando, Yoshiyuki Ohtake, Takashi Inoue, Tomoko Otsu, Haruyoshi Toyoda
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Patent number: 9991669Abstract: The embodiment relates to a semiconductor light-emitting device comprising a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a contact layer, and a phase modulation layer located between the first cladding and active layers or between the active and second cladding layers. The phase modulation layer comprises a basic layer and plural first modified refractive index regions different from the basic layer in a refractive index. In a virtual square lattice set on the phase modulation layer such that the modified refractive index region is allocated in each of unit constituent regions constituting square lattices, the modified refractive index region is arranged to allow its gravity center position to be separated from the lattice point of the corresponding unit constituent region, and to have a rotation angle about the lattice point according a desired optical image.Type: GrantFiled: July 21, 2017Date of Patent: June 5, 2018Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Kazuyoshi Hirose, Yoshitaka Kurosaka, Takahiro Sugiyama, Yuu Takiguchi, Yoshiro Nomoto
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Patent number: 9965867Abstract: A micro object control apparatus for controlling motion of a micro object within a medium includes a light source, an optical vortex generation unit, an objective lens, an imaging unit, an analysis unit, and a movement unit. The analysis unit acquires first motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a first position, acquires second motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a second position, and evaluates a state of an optical trap of the micro object with the optical vortex by comparing the first motion information and the second motion information.Type: GrantFiled: October 2, 2014Date of Patent: May 8, 2018Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tomoko Otsu, Taro Ando, Hiroyasu Itoh, Haruyoshi Toyoda, Yoshiyuki Ohtake, Yuu Takiguchi
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Publication number: 20180109075Abstract: In a semiconductor light emitting element provided with an active layer 4, a pair of cladding layers 2, 7 between which the active layer 4 is interposed, and a phase modulation layer 6 optically coupled to the active layer 4, the phase modulation layer 6 includes a base layer 6A and a plurality of different refractive index regions 6B having different refractive indices from the base layer 6A. When an XYZ orthogonal coordinate system having a thickness direction of the phase modulation layer 6 as a Z-axis direction is set and a square lattice of a virtual lattice constant a is set in an XY plane, each of the different refractive index regions 6B is disposed so that a centroid position G thereof is shifted from a lattice point position in a virtual square lattice by a distance r, and the distance r is 0<r?0.3a.Type: ApplicationFiled: March 11, 2016Publication date: April 19, 2018Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Yoshitaka KUROSAKA, Yuu TAKIGUCHI, Takahiro SUGIYAMA, Kazuyoshi HIROSE, Yoshiro NOMOTO
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Patent number: 9948060Abstract: This semiconductor laser device includes a semiconductor laser chip and a spatial light modulator SLM optically coupled to the semiconductor laser chip. The semiconductor laser chip LDC includes an active layer 4, a pair of cladding layers 2 and 7 sandwiching the active layer 4, a diffraction grating layer 6 optically coupled to the active layer 4, and a drive electrode E3 that is disposed between the cladding layer 2 and the spatial light modulator SLM and supplies an electric current to the active layer 4, and the drive electrode E3 is positioned within an XY plane and has a plurality of openings as viewed from a Z-axis direction and has a non-periodic structure.Type: GrantFiled: December 24, 2015Date of Patent: April 17, 2018Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yuu Takiguchi, Kazuyoshi Hirose, Yoshitaka Kurosaka, Takahiro Sugiyama, Yoshiro Nomoto
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Publication number: 20180026419Abstract: The embodiment relates to a semiconductor light-emitting device comprising a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a contact layer, and a phase modulation layer located between the first cladding and active layers or between the active and second cladding layers. The phase modulation layer comprises a basic layer and plural first modified refractive index regions different from the basic layer in a refractive index. In a virtual square lattice set on the phase modulation layer such that the modified refractive index region is allocated in each of unit constituent regions constituting square lattices, the modified refractive index region is arranged to allow its gravity center position to be separated from the lattice point of the corresponding unit constituent region, and to have a rotation angle about the lattice point according a desired optical image.Type: ApplicationFiled: July 21, 2017Publication date: January 25, 2018Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Kazuyoshi HIROSE, Yoshitaka KUROSAKA, Takahiro SUGIYAMA, Yuu TAKIGUCHI, Yoshiro NOMOTO
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Publication number: 20180006426Abstract: Provided is a semiconductor laser device including a plurality of semiconductor laser units LDC that are capable of being independently driven, and a spatial light modulator SLM that is optically coupled to a group of the plurality of semiconductor laser units LDC. Each of the semiconductor laser units includes a pair of clad layers having an active layer 4 interposed therebetween, and a diffractive lattice layer 6 that is optically coupled to the active layer 4. The semiconductor laser device includes a ¼ wavelength plate 26 that is disposed between a group of the active layers 4 of the plurality of semiconductor laser units LDC and a reflection film 23, and a polarizing plate 27 that is disposed between the group of the active layers 4 of the plurality of semiconductor laser units LDC and a light emitting surface.Type: ApplicationFiled: January 7, 2016Publication date: January 4, 2018Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Yuu TAKIGUCHI, Kazuyoshi HIROSE, Yoshiro NOMOTO, Takahiro SUGIYAMA, Yoshitaka KUROSAKA
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Publication number: 20170363876Abstract: A light irradiation device includes a Gaussian beam output unit for outputting light having a light intensity distribution that conforms to a Gaussian distribution, a spatial light modulator for receiving the light and modulating the light by presenting a CGH, an optical system for converging the modulated light, and an amplitude mask arranged on at least one of an optical axis between the Gaussian beam output unit and the spatial light modulator and an optical axis between the spatial light modulator and the optical system. The amplitude mask has a circular-shaped first region centered on the optical axis and an annular-shaped second region that surrounds the first region. Transmittance in the second region continuously decreases as a distance from the optical axis increases.Type: ApplicationFiled: January 12, 2016Publication date: December 21, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hiroto SAKAI, Yuu TAKIGUCHI
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Patent number: 9846267Abstract: An optical observation system includes a spatial light modulator displaying a Fresnel type kinoform on a phase modulation plane, and modulating light L1 in phase to irradiate an observation object with modulated light L2, an imaging optical system imaging observation target light L3 from the observation object, an optical system moving mechanism moving the imaging optical system in an optical axis direction of the observation target light L3, and a control section controlling the optical system moving mechanism such that the focal position of the imaging optical system changes in response to a change in the light condensing position of the modulated light L2 by the Fresnel type kinoform.Type: GrantFiled: December 13, 2013Date of Patent: December 19, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventor: Yuu Takiguchi
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Publication number: 20170338624Abstract: This semiconductor laser device includes a semiconductor laser chip and a spatial light modulator SLM optically coupled to the semiconductor laser chip. The semiconductor laser chip LDC includes an active layer 4, a pair of cladding layers 2 and 7 sandwiching the active layer 4, a diffraction grating layer 6 optically coupled to the active layer 4, and a drive electrode E3 that is disposed between the cladding layer 2 and the spatial light modulator SLM and supplies an electric current to the active layer 4, and the drive electrode E3 is positioned within an XY plane and has a plurality of openings as viewed from a Z-axis direction and has a non-periodic structure.Type: ApplicationFiled: December 24, 2015Publication date: November 23, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Yuu TAKIGUCHI, Kazuyoshi HIROSE, Yoshitaka KUROSAKA, Takahiro SUGIYAMA, Yoshiro NOMOTO
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Publication number: 20170307865Abstract: A light irradiation device is an apparatus for irradiating an irradiation object, and includes a light source outputting readout light L1, a spatial light modulator modulating the readout light L1 in phase to output modulated light L2, and a both-sided telecentric optical system including a first lens optically coupled to a phase modulation plane of the spatial light modulator and a second lens optically coupled between the first lens and the irradiation object, and optically coupling the phase modulation plane and the irradiation object. An optical distance between the phase modulation plane and the first lens is substantially equal to a focal length of the first lens. The spatial light modulator displays a Fresnel type kinoform on the phase modulation plane.Type: ApplicationFiled: June 30, 2017Publication date: October 26, 2017Inventor: Yuu TAKIGUCHI
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Patent number: 9798165Abstract: A light modulation apparatus 1A includes a first spatial light modulator, a pinhole member, and a second spatial light modulator. The first spatial light modulator has a phase modulation plane on which a kinoform for performing intensity modulation is displayed, and generates modulated light P2. The pinhole member has a light passing hole for letting a first-order light component of the modulated light P2 pass therethrough, and blocks a zeroth-order light component of the modulated light P2. The second spatial light modulator has a polarization modulation plane that controls the polarization state of the modulated light P2 incident on the polarization modulation plane through the light passing hole of the pinhole member, and generates modulated light P3.Type: GrantFiled: October 22, 2013Date of Patent: October 24, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventor: Yuu Takiguchi
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Patent number: 9793681Abstract: This semiconductor laser device includes a semiconductor laser chip and a spatial light modulator SLM which is optically connected to the semiconductor laser chip. The semiconductor laser chip LDC includes an active layer 4, a pair of cladding layers 2 and 7 sandwiching the active layer 4, and a diffraction grating layer 6 which is optically connected to the active layer 4. The spatial light modulator SLM includes a common electrode 25, a plurality of pixel electrodes 21, and a liquid crystal layer LC arranged between the common electrode 25 and the pixel electrodes 21. A laser beam output in a thickness direction of the diffraction grating layer 6 is modulated and reflected by the spatial light modulator SLM and is output to the outside.Type: GrantFiled: July 2, 2014Date of Patent: October 17, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yuu Takiguchi, Yoshiro Nomoto
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Publication number: 20170259374Abstract: A light irradiation apparatus includes a light source, a dispersive element, a spatial light modulator, and a focusing element. The dispersive element disperses pulsed light output from the light source and outputs the light. The dispersive element includes, for example. The spatial light modulator modulates a phase spectrum or an intensity spectrum of the light output from the dispersive element and outputs the light. The focusing element receives the light output from the spatial light modulator in a dispersing state, and focuses the light on a common region (focusing region) in a surface or an inside of an object.Type: ApplicationFiled: August 26, 2015Publication date: September 14, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventor: Yuu TAKIGUCHI
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Publication number: 20170261760Abstract: A light modulation apparatus includes a reflection type spatial light modulator, a polarization separating unit, a first polarization plane rotation unit, a polarization combining unit, and a second polarization plane rotation unit. The polarization separating unit separates input light, and outputs first separated light and second separated light. The first polarization plane rotation unit causes the first separated light to have P-polarization. A first region of a modulation plane of the spatial light modulator modulates the first separated light and outputs first modulated light, and a second region modulates the second separated light and outputs second modulated light. The second polarization plane rotation unit causes the second modulated light to have S-polarization. The polarization combining unit combines the first modulated light and the second modulated light and outputs output light.Type: ApplicationFiled: August 26, 2015Publication date: September 14, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventor: Yuu TAKIGUCHI
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Patent number: 9748737Abstract: A laser element includes a photonic crystal layer on which laser light is incident. The photonic crystal layer includes a base layer formed of a first refractive index medium; and a plurality of different refractive index regions formed of a second refractive index medium having a refractive index different from that of the first refractive index medium and disposed in the base layer. The plurality of different refractive index regions includes a first different refractive index region of which a planar shape is an approximate circle, an approximate square, or an approximate polygon having a rotational symmetry of 90° and a first area perpendicular to a thickness direction; and a second different refractive index region having a second area perpendicular to a thickness direction.Type: GrantFiled: March 7, 2014Date of Patent: August 29, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yuu Takiguchi, Yoshiro Nomoto
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Patent number: 9739992Abstract: A light irradiation device is an apparatus for irradiating an irradiation object, and includes a light source outputting readout light L1, a spatial light modulator modulating the readout light L1 in phase to output modulated light L2, and a both-sided telecentric optical system including a first lens optically coupled to a phase modulation plane of the spatial light modulator and a second lens optically coupled between the first lens and the irradiation object, and optically coupling the phase modulation plane and the irradiation object. An optical distance between the phase modulation plane and the first lens is substantially equal to a focal length of the first lens. The spatial light modulator displays a Fresnel type kinoform on the phase modulation plane.Type: GrantFiled: October 25, 2013Date of Patent: August 22, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventor: Yuu Takiguchi
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Patent number: 9727024Abstract: A phase distribution is calculated such that modulated light has a predetermined intensity distribution on a target plane and displayed on a phase modulation plane, readout light enters the phase modulation plane so as to generate the modulated light. When calculating the phase distribution, a region on the phase modulation plane is divided into N regions A1 . . . AN, with sizes set such that integration values of an intensity distribution in the regions are equal to each other. Further, a region on the target plane is divided into N regions B1 . . . BN, with sizes set such that integration values of an intensity distribution in the regions are equal to each other. The phase distribution is calculated by obtaining an optical path length from the region An to the region Bn, and determining the phase of the region An based on the optical path length.Type: GrantFiled: November 7, 2013Date of Patent: August 8, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yuu Takiguchi, Takashi Inoue
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Patent number: 9660415Abstract: This semiconductor laser device includes a semiconductor laser chip and a spatial light modulator SLM which is optically connected to the semiconductor laser chip. The semiconductor laser chip LDC includes an active layer 4, a pair of cladding layers 2 and 7 sandwiching the active layer 4, and a diffraction grating layer 6 which is optically connected to the active layer 4. The spatial light modulator SLM includes a transparent common electrode 25, a plurality of transparent pixel electrodes 21, a liquid crystal layer LC arranged between the common electrode 25 and the pixel electrodes 21. A laser beam output in a thickness direction of the diffraction grating layer 6 is modulated by the spatial light modulator SLM, passes therethrough, and is output to the outside.Type: GrantFiled: April 25, 2014Date of Patent: May 23, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yuu Takiguchi, Yoshiro Nomoto