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公开(公告)号：US20210397128A1
公开(公告)日：2021-12-23
申请号：US17347633
申请日：2021-06-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi HIROSE , Yoshitaka KUROSAKA , Yuu TAKIGUCHI
Abstract: An image output device of the disclosure facilitates enlargement of a stereoscopic image and includes a spatial light modulator, an image irradiation unit, and an address light irradiation unit. The spatial light modulator includes a main surface, a back surface, and pixels, reflects light emitted to the main surface, and modulates a phase of the light for each pixel. The image irradiation unit irradiates the main surface with light including an optical image. The address light irradiation unit irradiates the back surface with address light including a diffraction grating pattern. Each pixel of the spatial light modulator changes a phase modulation amount according to the intensity of the address light from a back surface. The address light irradiation unit dynamically change a diffraction grating pattern's direction on the back surface. The image irradiation unit irradiates the main surface with the optical image corresponding to the diffraction grating pattern's direction.
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公开(公告)号：US20200028327A1
公开(公告)日：2020-01-23
申请号：US16585948
申请日：2019-09-27
Applicant: KYOTO UNIVERSITY , ROHM CO., LTD. , HAMAMATSU PHOTONICS K.K. , MITSUBISHI ELECTRIC CORPORATION
Inventor： Susumu NODA , Hitoshi KITAGAWA , Yong LIANG , Akiyoshi WATANABE , Kazuyoshi HIROSE
Abstract: To provide a two-dimensional photonic crystal surface emitting laser capable of improving characteristics of light to be emitted, in particular, optical output power. The two-dimensional photonic crystal surface emitting laser includes: a two-dimensional photonic crystal including a plate-shaped base member and modified refractive index regions where the modified refractive index regions have a refractive index different from that of the plate-shaped base member and are two-dimensionally and periodically arranged in the base member; an active layer provided on one side of the two-dimensional photonic crystal; and a first electrode and a second electrode provided sandwiching the two-dimensional photonic crystal and the active layer for supplying current to the active layer, where the second electrode covers a region equal to or wider than the first electrode.
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3.发明申请公开(公告)号：US20190288483A1
公开(公告)日：2019-09-19
申请号：US16433127
申请日：2019-06-06
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takahiro SUGIYAMA , Yuu TAKIGUCHI , Yoshitaka KUROSAKA , Kazuyoshi HIROSE , Yoshiro NOMOTO , Soh UENOYAMA
Abstract: The present embodiment relates to a single semiconductor light-emitting element including a plurality of light-emitting portions each of which is capable of generating light of a desired beam projection pattern and a method for manufacturing the semiconductor light-emitting element. In the semiconductor light-emitting element, an active layer and a phase modulation layer are formed on a common substrate layer, and the phase modulation layer includes at least a plurality of phase modulation regions arranged along the common substrate layer. The plurality of phase modulation regions are obtained by separating the phase modulation layer into a plurality of places after manufacturing the phase modulation layer, and as a result, the semiconductor light-emitting element provided with a plurality of light-emitting portions that have been accurately aligned can be obtained through a simple manufacturing process as compared with the related art.
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公开(公告)号：US20180109075A1
公开(公告)日：2018-04-19
申请号：US15556429
申请日：2016-03-11
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshitaka KUROSAKA , Yuu TAKIGUCHI , Takahiro SUGIYAMA , Kazuyoshi HIROSE , Yoshiro NOMOTO
CPC classification number: H01S5/18358 , H01S5/0683 , H01S5/105 , H01S5/187 , H01S5/42 , H01S5/423 , H01S2301/18 , H01S2301/20
Abstract: 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
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公开(公告)号：US20180074227A1
公开(公告)日：2018-03-15
申请号：US15701918
申请日：2017-09-12
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshiro NOMOTO , Yoshitaka KUROSAKA , Kazuyoshi HIROSE , Takahiro SUGIYAMA , Soh UENOYAMA
CPC classification number: G02B1/002 , G02B5/008 , G02F1/19 , G02F2202/101 , G02F2202/30
Abstract: A metasurface is capable of modulating input light including a wavelength in a range of 880 nm to 40 μm. The metasurface includes: a GaAs substrate including a light input surface into which input light is input and a light output surface facing the light input surface; an interlayer having a lower refractive index than GaAs and disposed on the light output surface side of the GaAs substrate; and a plurality of V-shaped antenna elements disposed on a side of the interlayer which is opposite to the GaAs substrate side and including a first arm and a second arm continuous with one end of the first arm.
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Patent Agency Ranking
公开(公告)号：US20240162679A1
公开(公告)日：2024-05-16
申请号：US18283894
申请日：2022-03-02
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi HIROSE , Koyo WATANABE , Hiroki KAMEI
Abstract: A light-emitting device is an S-iPM laser of M-point oscillation including a phase modulation layer. Four-direction in-plane wavenumber vectors each including a wavenumber spread corresponding to an angular spread of light output from the light-emitting device are formed on a reciprocal lattice space of the phase modulation layer. The magnitude of at least one of the in-plane wavenumber vectors is smaller than 2π/λ. A predetermined phase distribution included in the phase modulation layer includes an element for focusing the light output.
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公开(公告)号：US20230198224A1
公开(公告)日：2023-06-22
申请号：US17925089
申请日：2021-05-27
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshitaka KUROSAKA , Kazuyoshi HIROSE , Yuu TAKIGUCHI , Akio ITO , Tadataka EDAMURA , Takahiko YAMANAKA , Shigeo HARA
CPC classification number: H01S5/026 , H01S5/34313 , H01S5/34353 , H01S5/11 , H01S5/04254 , H01S5/423 , H01S5/18308 , H01S2304/04
Abstract: An optical device of one embodiment outputs light in a short-wavelength range such as a visible range. The optical device includes a UC layer, first and second light-confinement layers, and a resonance mode forming layer. The UC layer contains an upconversion material receiving excitation light in a first wavelength range and outputting light in a second wavelength range. The first light-confinement layer has a characteristic of reflecting part of the second wavelength-range light. The second light-confinement layer has a characteristic of reflecting part of the second wavelength-range light and transmitting the remainder, and is disposed such that the UC layer locates between the first and second light-confinement layers. The resonance mode forming layer locates between the UC layer and the first or second light-confinement layer, includes a base layer and plural modified refractive index regions, and forms a resonance mode of the second wavelength-range light.
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公开(公告)号：US20210262787A1
公开(公告)日：2021-08-26
申请号：US17175059
申请日：2021-02-12
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi HIROSE , Hiroki KAMEI , Takahiro SUGIYAMA , Akiyoshi WATANABE
Abstract: A three-dimensional measurement device includes one or a plurality of light source units configured to irradiate the object to be measured SA with measurement light having a predetermined pattern, one or a plurality of image capture units configured to capture an image of the object to be measured which is irradiated with the measurement light, and a measurement unit configured to measure a three-dimensional shape of the object to be measured on the basis of results of image capture performed by the image capture units. The light source units are constituted by an S-iPMSEL of M-point oscillation.
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公开(公告)号：US20210249842A1
公开(公告)日：2021-08-12
申请号：US16972825
申请日：2019-06-04
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi HIROSE , Takahiro SUGIYAMA , Yuu TAKIGUCHI , Yoshiro NOMOTO , Soh UENOYAMA
Abstract: A light emission device of one embodiment reduces zero-order light included in output of an S-iPM laser. The light emission device includes a light emission unit and a phase modulation layer. The phase modulation layer has a base layer and modified refractive index regions each including modified refractive index elements. In each unit constituent region centered on a lattice point of an imaginary square lattice set on the phase modulation layer, the distance from the corresponding lattice point to each of the centers of gravity of the modified refractive index elements is greater than 0.30 times and is not greater than 0.50 times of the lattice spacing. In addition, the distance from the corresponding lattice point to the center of gravity of the modified refractive index elements as a whole is greater than 0 and is not greater than 0.30 times of the lattice spacing.
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公开(公告)号：US20200373740A1
公开(公告)日：2020-11-26
申请号：US16769828
申请日：2018-11-28
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi HIROSE , Yoshitaka KUROSAKA , Yuu TAKIGUCHI , Takahiro SUGIYAMA
Abstract: The present embodiment relates to a light-emitting device or the like having a structure capable of reducing one power of ±1st-order light with respect to the other power. The light-emitting device includes a substrate, a light-emitting portion, and a phase modulation layer including a base layer and a plurality of modified refractive index regions. Each of the plurality of modified refractive index regions has a three-dimensional shape defined by a first surface facing the substrate, a second surface positioned on a side opposite to the substrate with respect to the first surface, and a side surface. In the three-dimensional shape, at least one of the first surface, the second surface, and the side surface has a portion inclined with respect to a main surface.
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