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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
发明人： Yuu Takiguchi , Kazuyoshi Hirose , Yoshitaka Kurosaka , Takahiro Sugiyama , Yoshiro Nomoto , Soh Uenoyama
CPC分类号： G02F1/015 , H01S5/0085 , H01S5/06821 , G02F1/0154
摘要： 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
发明人： Takahiro Sugiyama , Yuu Takiguchi , Yoshitaka Kurosaka , Kazuyoshi Hirose , Yoshiro Nomoto , Soh Uenoyama
CPC分类号： 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
摘要： 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
发明人： Takahiro Sugiyama , Yuu Takiguchi , Yoshitaka Kurosaka , Kazuyoshi Hirose , Yoshiro Nomoto , Soh Uenoyama
摘要： 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
CPC分类号： H01S5/105 , H01S5/0425 , H01S5/06243 , H01S5/1085 , H01S5/1218 , H01S5/323 , H01S5/34313 , H01S5/4056
摘要： 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.
摘要翻译： 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：US12051883B2
公开(公告)日：2024-07-30
申请号：US17787976
申请日：2020-12-23
CPC分类号： H01S5/0085 , G02F1/0151 , G02F1/025 , H01S5/026 , H01S5/0265 , H01S5/11 , H01S5/185 , G02F2201/12 , H01S5/18
摘要： This disclosure relates to a spatial light modulator, etc., the spatial light modulator being capable of dynamically controlling the phase distribution of light, and provided with a structure having a smaller pixel arrangement period and suitable for high-speed operation. The spatial light modulator includes a substrate. The substrate has a front surface, a back surface, and through-holes arranged one-dimensionally or two-dimensionally and penetrating between the front surface and the back surface. The spatial light modulator further includes layered structures each covering the inner walls of the through-holes. Each layered structure includes a first electroconductive layer on the inner wall, a dielectric layer on the first electroconductive layer and having optical transparency, and a second electroconductive layer on the dielectric layer and having optical transparency. At least one of the first and second electroconductive layers is electrically isolated for each group including one or more through-holes.
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公开(公告)号：US11923655B2
公开(公告)日：2024-03-05
申请号：US17269313
申请日：2019-08-27
CPC分类号： H01S5/026 , H01S5/18305 , H01S5/185 , H01S5/11 , H01S5/34313 , H01S5/34353
摘要： The present embodiment relates to a light emission device capable of removing zero-order light from output light of an S-iPM laser. The light emission device comprises an active layer and a phase modulation layer. The phase modulation layer includes a base layer and a plurality of modified refractive index regions. In a state in which a virtual square lattice is set on the phase modulation layer, a center of gravity of each modified refractive index region is separated from a corresponding lattice point, and a rotation angle around each lattice point that decides a position of the center of gravity of each modified refractive index region is set according to a phase distribution for forming an optical image. A lattice spacing and an emission wavelength satisfy a condition of M-point oscillation in a reciprocal lattice space of the phase modulation layer. A magnitude of at least one of in-plane wavenumber vectors in four directions formed in the reciprocal lattice space and each including a wavenumber spread corresponding to an angle spread of the output light is smaller than 2π/λ.
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公开(公告)号：US11777276B2
公开(公告)日：2023-10-03
申请号：US17749893
申请日：2022-05-20
发明人： Takahiro Sugiyama , Yuu Takiguchi , Yoshitaka Kurosaka , Kazuyoshi Hirose , Yoshiro Nomoto , Soh Uenoyama
CPC分类号： 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
摘要： 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：US11626709B2
公开(公告)日：2023-04-11
申请号：US16769805
申请日：2018-11-28
摘要： The embodiment relates to a light-emitting device in which a positional relationship between a modified refractive index region's gravity-center position and the associated lattice point differs from a conventional device, and a production method. In this device, a stacked body including a light-emitting portion and a phase modulation layer optically coupled to the light-emitting portion is on a substrate. The phase modulation layer includes a base layer and plural modified refractive index regions in the base layer. Each modified refractive index region's gravity-center position locates on a virtual straight line passing through a corresponding reference lattice point among lattice points of a virtual square lattice on the base layer's design plane. A distance between the reference lattice point and the modified refractive index region's gravity center along the virtual straight line is individually set such that this device outputs light forming an optical image.
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公开(公告)号：US11374383B2
公开(公告)日：2022-06-28
申请号：US16756513
申请日：2018-10-02
摘要： A semiconductor light emitting element that can form a useful beam pattern is provided. A semiconductor laser element LD includes an active layer 4, a pair of cladding layers 2 and 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 different refractive index regions 6B that are different in refractive index from the base layer 6A. The different refractive index regions 6B desirably arranged in the phase modulation layer 6 enable emission of laser light including a dark line with no zero-order light.
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公开(公告)号：US11309687B2
公开(公告)日：2022-04-19
申请号：US16769828
申请日：2018-11-28
摘要： 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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