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公开(公告)号：US11686956B2
公开(公告)日：2023-06-27
申请号：US16622497
申请日：2018-06-13
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yuu Takiguchi , Kazuyoshi Hirose , Yoshitaka Kurosaka , Takahiro Sugiyama , Yoshiro Nomoto , Soh Uenoyama
CPC classification number: G02F1/015 , H01S5/0085 , H01S5/06821 , G02F1/0154
Abstract: The present embodiment relates to a light-emitting device that enables reduction in attenuation or diffraction effect caused by a semiconductor light-emitting device with respect to modulated light outputted from a spatial light modulator, and the light-emitting device includes the semiconductor light-emitting device that outputs light from a light output surface and the reflection type spatial light modulator that modulates the light. The spatial light modulator includes a light input/output surface having the area larger than the area of a light input surface of the semiconductor light-emitting device, modulates light taken through a region facing the light output surface of the semiconductor light-emitting device in the light input/output surface, and outputs the modulated light from another region of the light input/output surface to a space other than the light input surface of the semiconductor light-emitting device.
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公开(公告)号：US11646546B2
公开(公告)日：2023-05-09
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
CPC classification number: H01S5/11 , H01S5/04256 , H01S5/42 , H01S5/026 , H01S5/0425 , H01S5/04254 , H01S5/1835 , H01S5/34313 , H01S5/34353 , H01S5/423 , H01S2301/16 , H01S2301/18 , H01S2301/20
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：US11637409B2
公开(公告)日：2023-04-25
申请号：US16432198
申请日：2019-06-05
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takahiro Sugiyama , Yuu Takiguchi , Yoshitaka Kurosaka , Kazuyoshi Hirose , Yoshiro Nomoto , Soh Uenoyama
Abstract: A semiconductor light-emitting module according to the present embodiment includes a plurality of semiconductor light-emitting elements each outputting light of a desired beam projection pattern; and a support substrate holding the plurality of semiconductor light-emitting elements. Each of the plurality of semiconductor light-emitting elements includes a phase modulation layer configured to form a target beam projection pattern in a target beam projection region. The plurality of semiconductor light-emitting elements include first and second semiconductor light-emitting elements that are different in terms of at least any of a beam projection direction, the target beam projection pattern, and a light emission wavelength.
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公开(公告)号：US09048624B2
公开(公告)日：2015-06-02
申请号：US14362435
申请日：2012-12-05
Applicant: Kyoto University , HAMAMATSU PHOTONICS K.K.
Inventor： Susumu Noda , Yoshitaka Kurosaka , Akiyoshi Watanabe , Kazuyoshi Hirose , Takahiro Sugiyama
CPC classification number: H01S5/105 , H01S5/0425 , H01S5/06243 , H01S5/1085 , H01S5/1218 , H01S5/323 , H01S5/34313 , H01S5/4056
Abstract: According to a finite difference between inverse numbers of arrangement periods (a1 and a2) in first and second periodic structures, when seen in a thickness direction of a semiconductor laser element, at least two laser beams that form a predetermined angle (δθ) with respect to a lengthwise direction of a first driving electrode (E2) are generated in the semiconductor laser element, one of the laser beams is set to be totally reflected in a light emission end surface, and a refractive angle (θ3) of the other laser beam is set to be less than 90 degrees.
Abstract translation: 根据第一和第二周期结构中的排列周期（a1和a2）的倒数之间的有限差，当在半导体激光元件的厚度方向上看时，至少两个激光束形成预定角度（δ' 在半导体激光元件中产生相对于第一驱动电极（E2）的长度方向的一个激光束，其中一个激光束被设定为在发光端面中被全反射，并且将折射角（＆ 其他激光束设定为小于90度。
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公开(公告)号：US12124215B2
公开(公告)日：2024-10-22
申请号：US17347633
申请日：2021-06-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuyoshi Hirose , Yoshitaka Kurosaka , Yuu Takiguchi
CPC classification number: G03H1/041 , G03H1/0005 , G03H1/268 , G03H2001/0088 , H04N5/7416 , H04N9/31 , H04N13/393
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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Patent Agency Ranking
公开(公告)号：US12119612B2
公开(公告)日：2024-10-15
申请号：US17414070
申请日：2019-12-11
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Akio Ito , Yoshitaka Kurosaka , Masahiro Hitaka , Kazuyoshi Hirose , Tadataka Edamura
CPC classification number: H01S5/026 , H01S5/0236 , H01S5/04254 , H01S5/04256 , H01S5/11 , H01S5/34333 , G06F30/10 , H01S5/3436
Abstract: The light-emitting element of an embodiment outputs a clear optical image while suppressing light output efficiency reduction, and includes a substrate, a light-emitting unit, and a bonding layer. The light-emitting unit has a semiconductor stack, including a phase modulation layer, between first and second electrodes. The phase modulation layer has a base layer and modified refractive index regions, and includes a first region having a size including the second electrode, and a second region. Each gravity center of the second region's modified refractive index region is arranged by an array condition. The light from the stack is a single beam, and regarding a first distance from the substrate to the stack's front surface and a second distance from the substrate to the stack's back surface, a variation amount of the first distance along a direction on the substrate is smaller than a variation amount of the second distance.
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公开(公告)号：US11977204B2
公开(公告)日：2024-05-07
申请号：US17226662
申请日：2021-04-09
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Soh Uenoyama , Hiroki Kamei , Kazuyoshi Hirose
IPC: G02F1/1335 , G02B1/00 , G02B3/08 , G02F1/1333
CPC classification number: G02B1/002 , G02B3/08 , G02F1/133345 , G02F1/133507 , G02F1/133516
Abstract: A method for producing an optical element includes: disposing a joint layer on a substrate; forming a first portion and a second portion in a second surface of the joint layer; and forming a plurality of structural bodies, which are made of a dielectric, on the second surface of the joint layer. The joint layer has a first surface facing the substrate, and the second surface located on a side opposite the first surface. The first portion is covered with a resist layer, and the second portion is exposed from the resist layer. After the dielectric is laminated on at least the second portion, the resist layer is removed to form the plurality of structural bodies on the second surface.
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公开(公告)号：US11502481B2
公开(公告)日：2022-11-15
申请号：US16432198
申请日：2019-06-05
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takahiro Sugiyama , Yuu Takiguchi , Yoshitaka Kurosaka , Kazuyoshi Hirose , Yoshiro Nomoto , Soh Uenoyama
Abstract: A semiconductor light-emitting module according to the present embodiment includes a plurality of semiconductor light-emitting elements each outputting light of a desired beam projection pattern; and a support substrate holding the plurality of semiconductor light-emitting elements. Each of the plurality of semiconductor light-emitting elements includes a phase modulation layer configured to form a target beam projection pattern in a target beam projection region. The plurality of semiconductor light-emitting elements include first and second semiconductor light-emitting elements that are different in terms of at least any of a beam projection direction, the target beam projection pattern, and a light emission wavelength.
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公开(公告)号：US11088511B2
公开(公告)日：2021-08-10
申请号：US16451580
申请日：2019-06-25
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshitaka Kurosaka , Yuu Takiguchi , Takahiro Sugiyama , Kazuyoshi Hirose , Yoshiro Nomoto
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：US10461501B2
公开(公告)日：2019-10-29
申请号：US15505560
申请日：2015-08-28
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 10X includes: a two-dimensional photonic crystal 123 including a plate-shaped base member 121 and modified refractive index regions 122 where the modified refractive index regions 122 have a refractive index different from that of the plate-shaped base member 121 and are two-dimensionally and periodically arranged in the base member; an active layer 11 provided on one side of the two-dimensional photonic crystal 123; and a first electrode 15A and a second electrode 16 provided sandwiching the two-dimensional photonic crystal 123 and the active layer 11 for supplying current to the active layer 11, where the second electrode 16 covers a region equal to or wider than the first electrode 15A, wherein the first electrode 15A is formed so as to supply the current to the active layer 11 with a different density depending on the in-plane position on the first electrode 15A.
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