-
公开(公告)号：US11870218B2
公开(公告)日：2024-01-09
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
CPC classification number: H01S5/185 , H01S5/005 , H01S5/04252 , H01S5/04254 , H01S5/18302 , H01S5/34333 , H01S5/34326
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.
-
12.发明授权公开(公告)号：US11777276B2
公开(公告)日：2023-10-03
申请号：US17749893
申请日：2022-05-20
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.
-
公开(公告)号：US10389088B2
公开(公告)日：2019-08-20
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
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
-
公开(公告)号：US09614352B2
公开(公告)日：2017-04-04
申请号：US14772532
申请日：2014-03-07
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yuu Takiguchi , Yoshiro Nomoto
IPC: G02B5/30 , H01S5/10 , H01S5/12 , G02B27/28 , H01S5/00 , H01S5/20 , H01S5/343 , H01S5/18 , H01S5/028 , H01S5/42
CPC classification number: H01S5/105 , G02B27/286 , H01S5/005 , H01S5/0287 , H01S5/12 , H01S5/18 , H01S5/2018 , H01S5/34313 , H01S5/42 , H01S2301/14
Abstract: The coordinates of an unit configuration region R11 is (X1, Y1), and the coordinates of an unit configuration region Rmn is (Xm, Yn) (m and n are natural numbers). Rotation angles φ with respect to a center of apexes of an isosceles triangle are different according to coordinates, and at least three different rotation angles φ are contained in all of the photonic crystal layer.
-
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.
-
Patent Agency Ranking
16.发明授权公开(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.
-
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.
-
公开(公告)号：US09748737B2
公开(公告)日：2017-08-29
申请号：US14772826
申请日：2014-03-07
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yuu Takiguchi , Yoshiro Nomoto
CPC classification number: H01S5/105 , H01S5/0071 , H01S5/187 , H01S5/4075 , H01S5/42 , H01S2301/18 , H01S2301/20
Abstract: 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.
-
公开(公告)号：US11982886B2
公开(公告)日：2024-05-14
申请号：US17311022
申请日：2019-12-13
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshiro Nomoto
CPC classification number: G02F1/0126 , G02F1/0151 , G02F1/0311 , G02F2201/305
Abstract: A light modulator of to this embodiment enables high-speed modulation to an SLM using a liquid crystal. The light modulator comprises refractive index regions arranged in a first direction on a reference plane, a region surrounding each refractive index regions and having a refractive index lower than that of each refractive index region, a first conductive film, and a second conductive film. The first conductive film is provided on any one of a pair of side surfaces arranged in the first direction in at least one refractive index region selected from the refractive index regions and belonging to a first group. The second conductive film is provided on any one of the pair of side surfaces so as not to overlap with the first conductive film in at least one refractive index region selected from the refractive index regions and belonging to a second group.
-
公开(公告)号：US11031751B2
公开(公告)日：2021-06-08
申请号：US16434789
申请日：2019-06-07
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshitaka Kurosaka , Kazuyoshi Hirose , Takahiro Sugiyama , Yuu Takiguchi , Yoshiro Nomoto
Abstract: The present embodiment relates to a light emitting device having a structure capable of removing zero order light from output light of an S-iPM laser. The light emitting device includes a semiconductor light emitting element and a light shielding member. The semiconductor light emitting element includes an active layer, a pair of cladding layers, and a phase modulation layer. The phase modulation layer has a basic layer and a plurality of modified refractive index regions, each of which is individually disposed at a specific position. The light shielding member has a function of passing through a specific optical image output along an inclined direction and shielding zero order light output along a normal direction of a light emitting surface.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.018 seconds)
