Patents by Inventor Kenta Ishii

Kenta Ishii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11933900
    Abstract: A recognition device includes an acquisition unit configured to acquire a first detection result from a LIDAR that detects a target present in a traveling direction of a vehicle and to acquire a second detection result from a camera disposed so that the detection range overlaps that of the LIDAR, and a recognition unit configured to recognize a target present around the vehicle on the basis of the first detection result and the second detection result, in which the recognition unit executes exclusion processing of excluding a target, that satisfies all of a first condition indicating that a target is present within a predetermined distance from the vehicle, a second condition indicating that a target is detected by the LIDAR and is not detected by the camera, and a third condition indicating that a width of a target is equal to or less than a predetermined value and a detection duration thereof is equal to or less than a predetermined time, from a result of recognition recognized as a target present around th
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 19, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akinori Oi, Tatsuya Konishi, Kenta Ishii, Yuya Kaneda
  • Publication number: 20230251405
    Abstract: The diffusor has a microlens array including microlenses with the bases placed on a plane. Concerning a curved surface of each microlens, the following expressions are satisfied, where in a cross section perpendicular to the plane and containing a straight line passing through the projection point onto the plane of the vertex and maximizing a distance between two points of the straight line on the periphery of the base, coordinate along the straight line, coordinate of the curved surface of the microlens in the direction perpendicular to the plane, the maximum value of the first derivative of z? with respect to x?, the absolute value of the second derivative of z? with respect to x? at x? coordinate of the projection point and the absolute value at x? coordinate of an end of the straight line are represented respectively by x?, z?, d, D0 and D.
    Type: Application
    Filed: April 14, 2023
    Publication date: August 10, 2023
    Applicant: NALUX CO., LTD.
    Inventors: Kenta ISHII, Yosuke SAKOHIRA
  • Publication number: 20230111488
    Abstract: A vehicle control apparatus including a camera, a detector acquiring position information of a target based on reflected wave and a microprocessor. The microprocessor is configured to perform estimating a position of the target, based on position information acquired by the camera and the detector, controlling an actuator based on the estimated position, and detecting a predetermined gradient state in which a gradient of a road surface in front of a subject vehicle is an upward gradient of a predetermined degree or more with respect to a road surface at a current position of the subject vehicle and is configured to perform the estimating including estimating the position of the target by lowering a reliability of position information acquired by the camera among position information of the target captured on the road surface in the predetermined gradient state when the predetermined gradient state is detected.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 13, 2023
    Inventors: Tatsuya Konishi, Yuya Kaneda, Kenta Ishii, Tomoyuki Yokoyama
  • Patent number: 11594668
    Abstract: A thin film laminate comprises a metal layer consisting of a metal, and a thin film laminated on the surface of the metal layer, wherein a first direction is defined as one direction parallel to the surface of the metal layer, and a second direction is defined as one direction parallel to the surface of the metal layer and crossing the first direction; and the metal layer contains a plurality of first metal grains consisting of the metal and extending in the first direction on the surface of the metal layer, and a plurality of second metal grains consisting of the metal and extending in the second direction on the surface of the metal layer.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 28, 2023
    Assignee: TDK Corporation
    Inventors: Kenta Ishii, Masaru Nanao, Hitoshi Sakuma, Takao Noguchi
  • Publication number: 20220326485
    Abstract: An imaging optical system wherein the number of lenses is three to seven, one to four lenses, each of which is an aspheric lens in which radius of curvature of each of both surfaces is infinity in the paraxial region and which has a power of the third-order aberration region in the peripheral area are provided, the first lens from the object side is a negative lens or the aspheric lens, the relationship 0 . 1 ? 8 < ( ? i = 1 i = n ? "\[LeftBracketingBar]" 1 f i ? "\[RightBracketingBar]" ) · f n < 0 . 9 is satisfied where i represents a natural number, fi represents focal length of the i-th lens from the object side, f represents focal length of the whole system and n represents the number of the lenses, and the relationship 40°<HFOV<80° is satisfied where HFOV represents angle that the principal ray of bundle of rays that enters the imaging optical system and reaches the maximum value of image height forms with the optical axis.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 13, 2022
    Applicants: NALUX CO., LTD.
    Inventors: Keiji IKEMORI, Chang SHIH-YUAN, Tetsuya ZENKO, Kenta ISHII, Daisuke SEKI
  • Publication number: 20220308234
    Abstract: A recognition device includes an acquisition unit configured to acquire a first detection result from a LIDAR that detects a target present in a traveling direction of a vehicle and to acquire a second detection result from a camera disposed so that the detection range overlaps that of the LIDAR, and a recognition unit configured to recognize a target present around the vehicle on the basis of the first detection result and the second detection result, in which the recognition unit executes exclusion processing of excluding a target, that satisfies all of a first condition indicating that a target is present within a predetermined distance from the vehicle, a second condition indicating that a target is detected by the LIDAR and is not detected by the camera, and a third condition indicating that a width of a target is equal to or less than a predetermined value and a detection duration thereof is equal to or less than a predetermined time, from a result of recognition recognized as a target present around th
    Type: Application
    Filed: February 23, 2022
    Publication date: September 29, 2022
    Inventors: Akinori OI, Tatsuya KONISHI, Kenta ISHII, Yuya KANEDA
  • Publication number: 20220309801
    Abstract: A deceleration detection apparatus including an object detection device that detects an object around a subject vehicle, a rainfall detection device that detects a rainfall state around the subject vehicle, a brightness detection device that detects a brightness around the subject vehicle, and an electronic control unit including a microprocessor and a memory connected to the microprocessor. The microprocessor is configured to perform determining whether a forward vehicle traveling in front of the subject vehicle decelerates, based on an amount of change in a vehicle speed of the forward vehicle detected by the object detection device, a lighting state of a brake lamp of the forward vehicle detected by the object detection device, the rainfall state detected by the rainfall detection device, and the brightness detected by the brightness detection device.
    Type: Application
    Filed: February 21, 2022
    Publication date: September 29, 2022
    Inventors: Akinori Oi, Kenta Ishii, Yuya Kaneda, Tatsuya Konishi
  • Patent number: 11421847
    Abstract: A lens for headlamps of vehicles provided with a diffraction grating on a surface, wherein a phase function of the diffraction grating is represented by ? ? ( r ) = ? i = 1 N ? ? ? 2 ? i ? r 2 ? i where r represents distance from the central axis of the lens, and the relationship |?2|·(0.3R)2<|?4|·(0.3R)4 is satisfied where R represents effective radius of the lens, and wherein a second derivative of the phase function has at least one extreme value and at least one point of inflection where r is greater than 30% of R, a difference in spherical aberration between the maximum value and the minimum value at any value of r in 0?r?R is equal to or less than the longitudinal chromatic aberration for visible light, the diffraction grating is at least partially on the surface where r is greater than 30%, and the relationship 1 < ? ? ? ( R ) R 2 ? < 10 is satisfied.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: August 23, 2022
    Assignee: NALUX CO., LTD.
    Inventors: Kenta Ishii, Norihisa Sakagami, Daisuke Seki
  • Publication number: 20220082845
    Abstract: The optical system includes an optical element having a curvature in a first direction alone; and first and second lens array surfaces. Each of the lens array surfaces is provided with plural toroidal lens surfaces arranged in a second direction orthogonal to the first direction, the plural lens surfaces have a curvature mainly in the second direction, any lens surface on one of the lens array surfaces corresponds to one of the toroidal lens surfaces on the other, the direction of a first straight line connecting the vertexes of two toroidal lens surfaces corresponding to each other is orthogonal to the second direction, and in a cross section containing the first straight line and a second straight line that is in the second direction, one of the two toroidal lens surfaces is configured so as to form an imaging surface of the other for the object point at infinity.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 17, 2022
    Applicant: NALUX CO., LTD.
    Inventors: Kenta ISHII, Daisuke SEKI
  • Patent number: 11248770
    Abstract: An illumination optical system having a light source and a single convex lens with a diffractive structure, wherein the phase function of the diffractive structure is represented by ? ? ( r ) = ? i = 1 N ? ? ? 2 ? i ? r 2 ? i where r represents distance from the central axis of the lens, the relationship |?2|·(0.3R)2<|?4|·(0.3R)4 is satisfied where R represents effective radius of the lens, the second derivative of the phase function has at least one extreme value and at least one point of inflection where r is greater than 30% of R, and the area of a surface of the light source is equal to or greater than 3% of the area of the entrance pupil when the light source side of the lens is defined as the image side.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 15, 2022
    Assignees: Stanley Electric Co., Ltd., Nalux Co., Ltd.
    Inventors: Sadayuki Konishi, Kayuri Kinoshita, Kenta Ishii, Norihisa Sakagami, Daisuke Seki
  • Patent number: 11024853
    Abstract: According to the present disclosure, there is provided a technique making it possible to improve suitably the performance of a nonaqueous electrolyte secondary cell in which a SEI film is formed on the surface of a negative electrode active material. The nonaqueous electrolyte secondary cell disclosed herein includes a positive electrode 10, a negative electrode 20, and a nonaqueous electrolytic solution, wherein a negative electrode SEI film 29 including at least a LiBOB skeleton and a fluorosulfonic acid skeleton is formed on the surface of a negative electrode active material 28, and a positive electrode SEI film 19 including at least a phosphoric acid skeleton is formed on the surface of a positive electrode active material 18.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 1, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Ishii, Masahiro Morita, Risa Sato, Ryo Hanasaki, Yusuke Onoda, Koji Takahata, Atsushi Watarai
  • Publication number: 20210086787
    Abstract: An information processing apparatus includes a first detection unit which detects an object around a vehicle, a second detection unit of which at least a part of a detection range overlaps a detection range of the first detection unit and which detects an object around the vehicle, and a determination unit which determines whether or not the object has started to move on the basis of detection results of the first detection unit and the second detection unit. The determination unit determines that the object has started to move in a case in which the vehicle and the object are in a halted state when a detection result of the first detection unit indicates that the object has started to move and a detection result of the second detection unit indicates that the object has started to move.
    Type: Application
    Filed: September 18, 2020
    Publication date: March 25, 2021
    Inventors: Tatsuya Konishi, Katsunori Miyazawa, Kenta Ishii
  • Publication number: 20210080075
    Abstract: An illumination optical system having a light source and a single convex lens with a diffractive structure, wherein the phase function of the diffractive structure is represented by ? ? ( r ) = ? i = 1 N ? ? ? 2 ? i ? r 2 ? i where r represents distance from the central axis of the lens, the relationship |?2|·(0.3R)2<|?4|·(0.3R)4 is satisfied where R represents effective radius of the lens, the second derivative of the phase function has at least one extreme value and at least one point of inflection where r is greater than 30% of R, and the area of a surface of the light source is equal to or greater than 3% of the area of the entrance pupil when the light source side of the lens is defined as the image side.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Applicants: STANLEY ELECTRIC CO., LTD., NALUX CO., LTD.
    Inventors: Sadayuki KONISHI, Kayuri KINOSHITA, Kenta ISHII, Norihisa SAKAGAMI, Daisuke SEKI
  • Patent number: 10944040
    Abstract: A piezoelectric thin film-stacked body is provided. A piezoelectric thin film-stacked body has a first electrode layer, a first intermediate layer stacked on the first electrode layer, a second intermediate layer stacked on the first intermediate layer, and a piezoelectric thin film stacked on the second intermediate layer, the first intermediate layer includes K, Na, and Nb, the second intermediate layer is a layer causing stress in a compression direction in the piezoelectric thin film, and the piezoelectric thin film includes (K,Na)NbO3.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: March 9, 2021
    Assignee: TDK CORPORATION
    Inventors: Masaru Nanao, Kouhei Ohhashi, Kenta Ishii
  • Patent number: 10916764
    Abstract: According to the present invention, there is provided a technique making it possible to improve suitably the performance of a nonaqueous electrolyte secondary cell in which a SEI film is formed on the surface of a negative electrode active material. The nonaqueous electrolyte secondary cell disclosed herein includes a positive electrode 10, a negative electrode 20, and a nonaqueous electrolytic solution, wherein a negative electrode SEI film 29 including at least a LiBOB skeleton and a fluorosulfonic acid skeleton is formed on the surface of a negative electrode active material 28, and a positive electrode SEI film 19 including at least a phosphoric acid skeleton is formed on the surface of a positive electrode active material 18.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: February 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Ishii, Masahiro Morita, Shusaku Goto
  • Patent number: 10903499
    Abstract: In the nonaqueous electrolyte secondary cell disclosed herein, a negative electrode SEI film 29 including a LiBOB skeleton and a fluorosulfonic acid skeleton is formed, and a positive electrode SEI film 19 including a phosphoric acid skeleton is formed. Where the component amount of the LiBOB skeleton is denoted fey IB, the component amount of the fluorosulfonic acid skeleton is demoted by IS, and the component amount of the phosphoric acid skeleton is denoted by IP, a formula of 4?IB/IS?10 and a formula of 5 ?mol/m2?IP?15 ?mol/m2 are satisfied. Furthermore, the total amount of lithium phosphate relative to a BET specific surface area of the negative electrode active material, is 0.6 mol/m2 to 1.0 mol/m2, and the component amount IS of the fluorosulfonic acid skeleton is 0.6 ?mol/m2 to 1.0 ?mol/m2.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: January 26, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenta Ishii, Masaki Kato
  • Patent number: 10831001
    Abstract: The imaging optical system is provided with a first lens having a negative refractive power, a second lens having a positive refractive power, an aperture stop, and a third lens having a positive refractive power, disposed from the object side to the image side. With |d| being the distance between the image-side principal point of the first lens and the object-side principal point of the second lens, d=?|d| being the signed distance between the image-side principal point of the first lens and the object-side principal point of the second lens when the image-side principal point of the first lens is further towards the image side than the object-side principal point of the second lens, and f12 being the composite focal length of the first lens and the second lens, the relationships d<0 and 0.005<d/f12<16 are established.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: November 10, 2020
    Assignee: NALUX CO., LTD.
    Inventors: Kenta Ishii, Daisuke Seki
  • Patent number: 10790434
    Abstract: A piezoelectric thin film-stacked body is provided. A piezoelectric thin film-stacked body has a first electrode layer, a first oxide layer stacked on the first electrode layer, a second oxide layer stacked on the first oxide layer, and a piezoelectric thin film stacked on the second oxide layer, the electrical resistivity of the first oxide layer is higher than the electrical resistivity of the second oxide layer, the first oxide layer includes K, Na, and Nb, and the piezoelectric thin film includes (K,Na)NbO3.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: September 29, 2020
    Assignee: TDK CORPORATION
    Inventors: Hitoshi Sakuma, Tomohisa Azuma, Kenta Ishii
  • Publication number: 20200212286
    Abstract: A thin film laminate comprises a metal layer consisting of a metal, and a thin film laminated on the surface of the metal layer, wherein a first direction is defined as one direction parallel to the surface of the metal layer, and a second direction is defined as one direction parallel to the surface of the metal layer and crossing the first direction; and the metal layer contains a plurality of first metal grains consisting of the metal and extending in the first direction on the surface of the metal layer, and a plurality of second metal grains consisting of the metal and extending in the second direction on the surface of the metal layer.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 2, 2020
    Applicant: TDK Corporation
    Inventors: Kenta ISHII, Masaru NANAO, Hitoshi SAKUMA, Takao NOGUCHI
  • Patent number: 10700260
    Abstract: A piezoelectric ceramic sputtering target containing a perovskite type oxide represented by chemical formula (I) of ABO3 as a main component, wherein the component A of the chemical formula (I) contains at least K (potassium) and/or Na (sodium), the component B of the chemical formula (I) contains at least Nb (niobium), the piezoelectric ceramic sputtering target is composed of a plurality of crystal grains; and the average particle diameter of the crystal grains is larger than 3 ?m and not larger than 30 ?m.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 30, 2020
    Assignee: TDK CORPORATION
    Inventors: Tomohisa Azuma, Masaru Nanao, Kenta Ishii