Patents by Inventor Ken'ichi Kasazumi

Ken'ichi Kasazumi 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).

  • Publication number: 20240027762
    Abstract: A light guide plate includes a first hologram element including a plurality of diffraction cells. At least one of edge lines of one diffraction cell among the plurality of diffraction cells included in the first hologram element is located at a position other than on extensions of all edge lines of an adjacent diffraction cell adjacent to the one diffraction cell, the adjacent diffraction cell being included in the plurality of diffraction cells.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ken'ichi KASAZUMI, Keiji SUGIYAMA, Yukihiro CHOKYU, Masafumi SUEYOSHI, Kazuhiro MINAMI
  • Publication number: 20240019621
    Abstract: A light guide plate includes a hologram element that is a first hologram element including two or more diffraction cells, and a hologram element that is a second hologram element including a single diffraction cell.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 18, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Keiji SUGIYAMA, Ken'ichi KASAZUMI, Yukihiro CHOKYU, Satoshi KUZUHARA, Kazuhiro MINAMI
  • Patent number: 11860372
    Abstract: A display control device is configured to control a display position of an image in an image projector configured to project the image onto a display object of a mobile body. The display control device includes a processor; and a memory storing instructions that, when executed by the processor, cause the display control device to perform operations including: acquiring a detection value of an acceleration acting on the mobile body; calculating an attitude angle of the mobile body based on the detection value of the acceleration; and setting a correction amount of the display position for controlling the display position of the image to be projected onto the display object by adjusting a correction amount per predetermined unit time in accordance with a change amount of the attitude angle in a predetermined period.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: January 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Fumihito Inukai, Toshiya Mori, Masanaga Tsuji, Ken'ichi Kasazumi
  • Patent number: 11780368
    Abstract: An electronic mirror system presents circumstances surrounding a moving vehicle by displaying an image presenting the circumstances surrounding the moving vehicle. The electronic mirror system includes an image display and an optical system. The image display displays, every time image data is acquired from an image capturing unit, the image, based on the image data acquired from the image capturing unit, on a display screen. The image capturing unit continuously shoots video presenting the circumstances surrounding the moving vehicle. The optical system condenses, into an eye box, a light beam representing the image displayed on the display screen to make a user, who has a viewpoint inside the eye box, view a virtual image based on the image displayed on the display screen. The display screen is arranged to be tilted with respect to an optical path that leads from the display screen to the optical system (30).
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: October 10, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Toshiya Mori, Ken'ichi Kasazumi
  • Patent number: 11646000
    Abstract: An image display system includes a display unit displaying an image, a projection unit projecting in a target space a virtual image corresponding to the image with an output light of the display unit, a body unit provided thereto the display unit and the projection unit, and an image producing unit including a first correction unit and a second correction unit. The first correction unit performs a first correction processing of correcting, based on a first orientation signal indicative of a first orientation change of the body unit, a display position of the virtual image in the target space. The second correction unit performs a second correction processing of correcting, based on a second orientation signal indicative of a second orientation change of the body unit which is faster than the first orientation change, the display position of the virtual image in the target space.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: May 9, 2023
    Assignee: PANASONIC IN TEI IFCTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masanaga Tsuji, Toshiya Mori, Ken'ichi Kasazumi, Yoshiteru Mino, Tadashi Shibata, Nobuyuki Nakano, Akira Tanaka, Shohei Hayashi
  • Patent number: 11619811
    Abstract: An image display system includes: an image projection unit that projects and displays an image on a display target for a moving body; a posture angle calculation unit that calculates a posture angle for the moving body on the basis of chronological data for acceleration detection values for the acceleration of the moving body in a prescribed time period; and a display control unit that controls the display position at which the image is projected and displayed on the display target, in accordance with the posture angle calculated by the posture angle calculation unit. The acceleration detection values include bi-directional components. The posture angle calculation unit excludes acceleration detection values from the chronological data used when calculating the posture angle, said acceleration detection values being included in an exclusion time period which has a ratio for the bidirectional components, in the prescribed time period, that is outside a prescribed range.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: April 4, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Fumihito Inukai, Toshiya Mori, Masanaga Tsuji, Ken′ichi Kasazumi, Yukihiro Chokyu
  • Publication number: 20230018634
    Abstract: A light guide body in a display device includes a first incident surface on which an image light is incident, and a second emission surface from which the image light is emitted. The light guide body includes a second emission optical element that diffracts the image light to emit a portion of the image light at a predetermined emission angle every time the image light enters the second emission optical element from a predetermined direction. The image light is diverged by being emitted from the second emission optical element such that the predetermined emission angle varies in accordance with a location in one predetermined region included in a plurality of predetermined regions of the optical element. The degree of divergence varies between the one predetermined region and other predetermined region included in the plurality of predetermined regions in accordance with the location of the virtual image.
    Type: Application
    Filed: September 23, 2022
    Publication date: January 19, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiya MORI, Ken'ichi KASAZUMI
  • Publication number: 20230018240
    Abstract: A display device includes a light guide body and displays an image of light emitted from the light guide body. The light guide body is of a curved shape, and includes a light guide plate and an optical element that diffracts and emits light propagating inside the light guide plate. The optical element is provided in the light guide body so that the angle of the optical element relative to a propagation direction in which the light propagates inside the light guide plate is constant irrespective of where in the optical element.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ken'ichi KASAZUMI, Toshiya MORI
  • Publication number: 20220208148
    Abstract: An image display system includes a display unit displaying an image, a projection unit projecting in a target space a virtual image corresponding to the image with an output light of the display unit, a body unit provided thereto the display unit and the projection unit, and an image producing unit including a first correction unit and a second correction unit. The first correction unit performs a first correction processing of correcting, based on a first orientation signal indicative of a first orientation change of the body unit, a display position of the virtual image in the target space. The second correction unit performs a second correction processing of correcting, based on a second orientation signal indicative of a second orientation change of the body unit which is faster than the first orientation change, the display position of the virtual image in the target space.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masanaga TSUJI, Toshiya MORI, Ken'ichi KASAZUMI, Yoshiteru MINO, Tadashi SHIBATA, Nobuyuki NAKANO, Akira TANAKA, Shohei HAYASHI
  • Patent number: 11315528
    Abstract: An image display system includes a display unit displaying an image, a projection unit projecting in a target space a virtual image corresponding to the image with an output light of the display unit, a body unit provided thereto the display unit and the projection unit, and an image producing unit including a first correction unit and a second correction unit. The first correction unit performs a first correction processing of correcting, based on a first orientation signal indicative of a first orientation change of the body unit, a display position of the virtual image in the target space. The second correction unit performs a second correction processing of correcting, based on a second orientation signal indicative of a second orientation change of the body unit which is faster than the first orientation change, the display position of the virtual image in the target space.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: April 26, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masanaga Tsuji, Toshiya Mori, Ken'ichi Kasazumi, Yoshiteru Mino, Tadashi Shibata, Nobuyuki Nakano, Akira Tanaka, Shohei Hayashi
  • Publication number: 20220113547
    Abstract: A display control device is configured to control a display position of an image in an image projector configured to project the image onto a display object of a mobile body. The display control device includes a processor; and a memory storing instructions that, when executed by the processor, cause the display control device to perform operations including: acquiring a detection value of an acceleration acting on the mobile body; calculating an attitude angle of the mobile body based on the detection value of the acceleration; and setting a correction amount of the display position for controlling the display position of the image to be projected onto the display object by adjusting a correction amount per predetermined unit time in accordance with a change amount of the attitude angle in a predetermined period.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 14, 2022
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Fumihito INUKAI, Toshiya MORI, Masanaga TSUJI, Ken'ichi KASAZUMI
  • Publication number: 20220113138
    Abstract: A video control device includes a processor and a memory including a program that, when executed, causes the processor to perform operations including: obtaining a position of a vehicle determined by a satellite positioning system; obtaining an estimated position of the vehicle estimated based on dead reckoning; estimating a deviation in an orientation of the vehicle, based on the position of the vehicle determined by the satellite positioning system and the estimated position of the vehicle estimated based on the dead reckoning; calculating an estimated orientation of the vehicle, based on the deviation in the orientation of the vehicle estimated; and outputting the estimated orientation of the vehicle to a video display device that displays information which is based on the orientation of the vehicle.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira TANAKA, Fumihito INUKAI, Toshiya MORI, Ken'ichi KASAZUMI
  • Publication number: 20220082853
    Abstract: This display device includes: a display unit including a plurality of pixels that is arrayed; an optical element array arranged in parallel with a light exit surface of the display unit and including a plurality of optical elements that is arrayed; and a controller that controls a pixel among the plurality of pixels to be non-lighting, the pixel overlapping a boundary portion between adjacent optical elements among the plurality of optical elements in a facing direction in which the display unit and the optical element array face each other.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Inventors: Satoru TANAHASHI, Shigeo Kasahara, Naoki Kamada, Toshiya Mori, Ken'ichi Kasazumi
  • Publication number: 20220013046
    Abstract: A virtual image display system includes an image data producing unit, an image display, and an optical system. The image data producing unit produces, based on image data of a rendering target and position information about a display position of the target, image data to display a virtual image of the target. The image display displays, on a display screen, an image based on the image data to display the virtual image. The display screen is arranged to be tilted with respect to an optical path leading from the display screen to the optical system. The image data of the rendering target includes first image data of a stereoscopic rendering target. The image data producing unit produces, based on the first image data and position information about a display position of the stereoscopic rendering target, second image data to make the user view the stereoscopic rendering target stereoscopically.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiya MORI, Ken'ichi KASAZUMI, Satoru TANAHASHI, Shigeo KASAHARA
  • Publication number: 20220009414
    Abstract: An electronic mirror system presents circumstances surrounding a moving vehicle by displaying an image presenting the circumstances surrounding the moving vehicle. The electronic mirror system includes an image display and an optical system. The image display displays, every time image data is acquired from an image capturing unit, the image, based on the image data acquired from the image capturing unit, on a display screen. The image capturing unit continuously shoots video presenting the circumstances surrounding the moving vehicle. The optical system condenses, into an eye box, a light beam representing the image displayed on the display screen to make a user, who has a viewpoint inside the eye box, view a virtual image based on the image displayed on the display screen. The display screen is arranged to be tilted with respect to an optical path that leads from the display screen to the optical system (30).
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiya MORI, Ken'ichi KASAZUMI
  • Publication number: 20220011574
    Abstract: An image display system includes: an image projection unit that projects and displays an image on a display target for a moving body; a posture angle calculation unit that calculates a posture angle for the moving body on the basis of chronological data for acceleration detection values for the acceleration of the moving body in a prescribed time period; and a display control unit that controls the display position at which the image is projected and displayed on the display target, in accordance with the posture angle calculated by the posture angle calculation unit. The acceleration detection values include bi-directional components. The posture angle calculation unit excludes acceleration detection values from the chronological data used when calculating the posture angle, said acceleration detection values being included in an exclusion time period which has a ratio for the bidirectional components, in the prescribed time period, that is outside a prescribed range.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fumihito INUKAI, Toshiya MORI, Masanaga TSUJI, Ken'ichi KASAZUMI, Yukihiro CHOKYU
  • Patent number: 11181737
    Abstract: A HUD device that allows an occupant of a moving body to view a virtual image by projecting an image on a display medium includes a display item information acquisition unit that acquires display item information showing position and display content of display item, a travel information acquisition unit that acquires travel information indicating position of the moving body at predetermined time intervals, and a state information acquisition unit that acquires state information indicating state of the moving body, and specifies at display timings display position on the basis of position indicated by display item information and position indicated by travel information acquired last.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: November 23, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kosuke Kubota, Ken'ichi Kasazumi, Masahito Ogata, Toshiya Mori
  • Patent number: 11175501
    Abstract: A screen includes a surface inclined with respect to a reference plane. A driver moves the screen in a movement direction orthogonal to the reference plane. When forming a first virtual image serving as a virtual image on a first virtual plane whose inclination angle ? with respect to an optical axis of a projector is smaller than a predetermined value, a controller is configured to hold the screen in the movement direction. When forming a second virtual image serving as the virtual image on a second virtual plane whose inclination angle ß with respect to the optical axis of the projector is larger than the predetermined value, the controller is configured to move the screen in the movement direction.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masahito Ogata, Toshiya Mori, Ken'ichi Kasazumi, Hiroaki Okayama
  • Patent number: 11137599
    Abstract: In a display device, an irradiation unit includes an imaging optical system. The imaging optical system scans and irradiates a front surface of a screen with light to form an image. The light passing through the screen and output from the screen in a movement direction is incident on a projection unit as incident light. The projection unit irradiates a reflective member with the incident light to allow the reflective member to reflect the incident light to form a virtual image corresponding to the image in a target space. A locus of a focal position of the imaging optical system when the irradiation unit wholly scans the front surface of the screen is within a range between the front surface of the screen at a first position and the front surface of the screen at a second position.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: October 5, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroaki Okayama, Satoshi Kuzuhara, Masahito Ogata, Toshiya Mori, Ken'ichi Kasazumi, Masafumi Sueyoshi
  • Patent number: 11125994
    Abstract: A display apparatus that displays a virtual image having a shape that follows an object to be superimposed when viewed from a user is provided. An optical system that is included in the display apparatus and displays a virtual image that is three-dimensional includes a laser that emits laser light, a MEMS scanner that performs scanning with the laser light, a screen that forms an image on a surface of the screen with the MEMS scanner scanning the surface with the laser light, a projection unit that generates a virtual image by projecting the image formed onto a display medium, and a drive unit that reciprocates the screen scanned with the laser light in a predetermined section along an optical path of the optical system at a predetermined cycle.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: September 21, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ken'ichi Kasazumi, Kosuke Kubota, Masahito Ogata, Toshiya Mori