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公开(公告)号：US20250112376A1
公开(公告)日：2025-04-03
申请号：US18792702
申请日：2024-08-02
Inventor： Yusuke ISONO , Masakazu IKEDA , Takahiro KATO
IPC: H01Q13/02
Abstract: A transmission device for transmitting an electromagnetic wave includes a first transmission member having a first transmission path and a second transmission member having a second transmission path. The first transmission path is a passage that has an opening on one surface of the first transmission member. The first transmission member and the second transmission member are disposed in such a manner that the second transmission path faces the one surface of the first transmission member with a gap between the second transmission member and the one surface of the first transmission member. The first transmission member has at least one recessed portion that has an opening at a location away from the first transmission path on the one surface.
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公开(公告)号：US20250105484A1
公开(公告)日：2025-03-27
申请号：US18792774
申请日：2024-08-02
Inventor： Masakazu IKEDA , Takahiro KATO
Abstract: A waveguide includes a first waveguide having a first waveguide hole and a second waveguide having a second waveguide hole and assembled to the first waveguide with a predetermined gap therebetween. The second waveguide hole has an opening on one surface of the second waveguide facing the first waveguide, and the opening has a rounded polygonal shape or a circular shape. The second waveguide includes a resin molded product and a metal coating film covering the resin molded product, and the second waveguide has a choke groove around the second waveguide hole. The choke groove has such a shape that a length between a wall surface of the second waveguide hole and an inner wall surface of the choke groove adjacent to the second waveguide hole is constant along a circumferential direction of the second waveguide hole.
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公开(公告)号：US20250104278A1
公开(公告)日：2025-03-27
申请号：US18813143
申请日：2024-08-23
Inventor： Akira TOKUSE
Abstract: A self-position estimation device is adapted to a movable object having a camera and a communication device. The camera takes an image of surrounding of the movable object. The self-position estimation device includes a feature acquisition unit, a scale calculation unit, and a self-position estimation unit. The feature acquisition unit acquires an image feature point. The scale calculation unit calculates an actual scale of the image. The self-position estimation unit estimates a self-position of the movable object based on the image feature point and the actual scale. The scale calculation unit acquires object information and an object image feature point, and calculates the actual scale based on the acquired object information and a feature value of the acquired object image feature point.
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公开(公告)号：US20250076586A1
公开(公告)日：2025-03-06
申请号：US18745226
申请日：2024-06-17
Inventor： HIROSHI ANDO , KOJIRO TACHI
IPC: G02B6/34
Abstract: An optical member includes a light guide made of a light-transmitting material. The light guide has an entrance surface, an exit section that outputs a part of light incident from the entrance surface to outside, a smooth surface opposite to the exit section, and a terminal surface located opposite to the entrance surface to connect the exit section and the smooth surface. The exit section has a first region adjacent to the entrance surface and a second region adjacent to the first region. The first region has a step-shaped reflective surface and a prism part alternately arranged adjacent to each other. The step-shaped reflective surface has plural flat surfaces located at different heights through a step portion.
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公开(公告)号：US20250044583A1
公开(公告)日：2025-02-06
申请号：US18673535
申请日：2024-05-24
Inventor： YUICHI TOYOTA , KOICHI OYAMA , CHIHIRO MORIGUCHI , KOHEI TOYAMA
Abstract: An optical deflector includes: a reflecting section driven to rotate or oscillate around a drive axis; and a diffraction section configured to diffract light reflected by the reflecting section. The reflecting section is driven to change a first incident angle of light, around the drive axis, incident on the diffraction section from the reflecting section. The diffraction section changes a first emission angle of light emitted from the diffraction section, around a first axis perpendicular to the drive axis and a predetermined direction defined to extend from the reflecting section toward the diffraction section perpendicularly to the drive axis. The diffraction section is driven about the drive axis together with the reflecting section to maintain a second incident angle of light incident on the diffraction section from the reflecting section, around the first axis.
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Patent Agency Ranking
公开(公告)号：US12174266B2
公开(公告)日：2024-12-24
申请号：US17732819
申请日：2022-04-29
Inventor： Junichi Hasegawa , Akimasa Niwa
IPC: G01R31/52 , H03K17/082
Abstract: A circuit for detecting a leakage current in a semiconductor element includes a setting circuit and a detector. The semiconductor element includes a first terminal at a high-potential-side of the semiconductor element, a second terminal at a low-potential-side of the semiconductor element, and a control terminal. The control terminal receives a signal for controlling a conduction state between the first terminal and the second terminal. The setting circuit sets a duration during which a charging current flows to the control terminal as an undetectable duration, in response to turning on the semiconductor element. The detector outputs a detected signal based on a condition that the leakage current flowing from the control terminal to the second terminal, after the undetectable duration has been elapsed.
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公开(公告)号：US20240418847A1
公开(公告)日：2024-12-19
申请号：US18739771
申请日：2024-06-11
Inventor： Atsushi KITAYAMA
IPC: G01S13/42 , G01S7/35 , G01S13/58 , G01S13/86 , G01S13/931
Abstract: A target object position estimation method includes: obtaining frequency distributions representing frequency and intensity for two successive transmission waves; obtaining an intensity distribution representing an intensity on a cell of a combination of a distance relative to a position of a millimeter wave radar and a velocity; generating at least one ranging point by extracting at least one cell having a greater intensity than a predetermined threshold value in the intensity distribution; predicting a type of the target object to which the ranging point belongs; setting a change threshold value in a target area; generating a plurality of ranging points representing positions relative to the position of the millimeter wave radar based on a plurality of cells extracted from the target area and representing greater intensities than the change threshold value; and estimating the position of the target object relative to the position of the millimeter wave radar.
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公开(公告)号：US20240413044A1
公开(公告)日：2024-12-12
申请号：US18633891
申请日：2024-04-12
Inventor： Koji URAMOTO , Masayuki KAMIYA , Masaki AOSHIMA
IPC: H01L23/373
Abstract: A semiconductor device includes a semiconductor element, an anisotropic graphite, a first bonding layer, an insulating member, a metal plate, a second bonding layer, and a third bonding layer. The semiconductor element has a chip shape. The anisotropic graphite has one surface to which the semiconductor element is disposed. A direction along the one surface is a c-axis direction of the anisotropic graphite. The first bonding layer bonds the semiconductor element to the one surface of the anisotropic graphite. The insulating member has a plate shape, is disposed across the anisotropic graphite from the semiconductor element, and insulates the anisotropic graphite. The metal plate is made of a metal material, has a plate shape, and is disposed between the anisotropic graphite and the insulating member. The second bonding layer bonds the anisotropic graphite and the metal plate. The third bonding layer bonds the metal plate and the insulating member.
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公开(公告)号：US20240395653A1
公开(公告)日：2024-11-28
申请号：US18665769
申请日：2024-05-16
Inventor： MASAKI AOSHIMA , TOMOHITO IWASHIGE
IPC: H01L23/367 , H01L21/48 , H01L23/373
Abstract: A heat dissipation member is provided between a first member and a second member in a first direction and compressed by the first and second member to conduct heat between the first and second member. The heat dissipation member includes thermally conductive members each having one end portion provided at one end in the first direction and thermally connected to the first member and an other end portion provided at an other end in the first direction. The thermally conductive members are thermally connected to the second member. The thermally conductive members are arranged side by side in a second direction perpendicular to the first direction and conduct heat between the one end portion and the other end portion. Each of the thermally conductive members has a curved shape which is bent or curved in a cross section taken along the first direction and the second direction.
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公开(公告)号：US12136654B2
公开(公告)日：2024-11-05
申请号：US18357276
申请日：2023-07-24
Inventor： Hiroki Miyake
IPC: H01L29/36 , H01L21/425 , H01L29/24 , H01L29/78 , H01L29/861 , H01L29/872
Abstract: A semiconductor device includes: a first semiconductor layer having an N conductive type and made of a gallium oxide-based semiconductor; and a second semiconductor layer made of a gallium oxide-based semiconductor, in contact with the first semiconductor layer, and having the N conductive type with an electrically active donor concentration higher than an electrically active donor concentration of the first semiconductor layer. A difference between a donor concentration of the first semiconductor layer and a donor concentration of the second semiconductor layer is smaller than a difference between the electrically active donor concentration of the first semiconductor layer and the electrically active donor concentration of the second semiconductor layer.
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