Patents by Inventor Shigeki Hoshino
Shigeki Hoshino 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).
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Publication number: 20240036313Abstract: A head-up display apparatus includes a display panel configured to display an image, and a reflecting mirror configured to reflect light from the display panel. An optical distance between the reflecting mirror and the display panel is changed to continuously change a display position of a virtual image from a distant place to an adjacent position such that a virtual image obtained by being reflected at an upper portion of a windshield is formed farther than a virtual image obtained by being reflected at a lower portion of the windshield when viewed from a viewpoint position of a driver.Type: ApplicationFiled: October 16, 2023Publication date: February 1, 2024Inventors: Koji HIRATA, Masahiko YATSU, Toshinori SUGIYAMA, Kazuomi KANEKO, Shigeki HOSHINO
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Patent number: 11828938Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.Type: GrantFiled: November 30, 2021Date of Patent: November 28, 2023Assignees: MAXELL, LTD., Hitachi Industry & Control Solutions, Ltd.Inventors: Koji Hirata, Masahiko Yatsu, Toshinori Sugiyama, Kazuomi Kaneko, Shigeki Hoshino
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Publication number: 20230280590Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image form ing unit side along the emission direction of the image light.Type: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Applicants: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko YATSU, Koji HIRATA, Shigeki HOSHINO
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Patent number: 11686937Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.Type: GrantFiled: October 20, 2021Date of Patent: June 27, 2023Assignees: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko Yatsu, Koji Hirata, Shigeki Hoshino
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Publication number: 20230120609Abstract: The head-up display device includes a display element that emits image light and a virtual image optical system. The virtual image optical system includes a lens unit and a free curved surface mirror disposed along the emission direction of the image light in this order from a position close to the display element. The display element is disposed with a tilting attitude with respect to the optical axis of the lens unit with an end on the housing aperture side in an emission surface being close to an incidence surface in the lens unit and with an end on the opposite side of the housing aperture in an emission surface being apart from an incidence surface in the lens unit. The lens unit has an optical characteristic of optically enlarging an optical path length difference according to a virtual image distance difference.Type: ApplicationFiled: December 21, 2022Publication date: April 20, 2023Inventors: Akio MISAWA, Nozomu SHIMODA, Yuji FUJITA, Shigeki HOSHINO
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Patent number: 11561395Abstract: The head-up display device includes a display element that emits image light and a virtual image optical system. The virtual image optical system includes a lens unit and a free curved surface mirror disposed along the emission direction of the image light in this order from a position close to the display element. The display element is disposed with a tilting attitude with respect to the optical axis of the lens unit with an end on the housing aperture side in an emission surface being close to an incidence surface in the lens unit and with an end on the opposite side of the housing aperture in an emission surface being apart from an incidence surface in the lens unit. The lens unit has an optical characteristic of optically enlarging an optical path length difference according to a virtual image distance difference.Type: GrantFiled: November 9, 2021Date of Patent: January 24, 2023Assignee: MAXELL, LTD.Inventors: Akio Misawa, Nozomu Shimoda, Yuji Fujita, Shigeki Hoshino
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Patent number: 11448878Abstract: A head up display that projects a video onto a windshield of a transportation, thereby displaying a virtual image related to the video to a driver, the head up display including a video display device including a light source and a display element and configured to form the video, and video light projecting means configured to project and reflect a video light emitted from the video display device on the windshield, thereby displaying the virtual image in front of the transportation, the video light projecting means including a reflection mirror that reflects the video light emitted from the video display device to the windshield, and the reflection mirror including, on its outer peripheral portion, deflection means configured to direct a reflected light in a direction different from a direction toward a line of sight of the driver.Type: GrantFiled: May 17, 2019Date of Patent: September 20, 2022Assignee: MAXELL, LTD.Inventors: Shigeki Hoshino, Hidemi Yamada, Toshinori Sugiyama
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Patent number: 11448877Abstract: A projection optical system includes an eyepiece optical system configured to refract and reflect a light emitted from an image forming unit for forming image information to display a virtual image, wherein the eyepiece optical system includes at least a concave lens, a folding mirror, and a concave mirror which are successively placed in order from the image forming unit including a liquid crystal display panel. The projection optical system configured as above is provided on a head-up display.Type: GrantFiled: July 4, 2017Date of Patent: September 20, 2022Assignees: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko Yatsu, Koji Hirata, Shigeki Hoshino
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Publication number: 20220082826Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.Type: ApplicationFiled: November 30, 2021Publication date: March 17, 2022Inventors: Koji HIRATA, Masahiko YATSU, Toshinori SUGIYAMA, Kazuomi KANEKO, Shigeki HOSHINO
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Publication number: 20220066209Abstract: The head-up display device includes a display element that emits image light and a virtual image optical system. The virtual image optical system includes a lens unit and a free curved surface mirror disposed along the emission direction of the image light in this order from a position close to the display element. The display element is disposed with a tilting attitude with respect to the optical axis of the lens unit with an end on the housing aperture side in an emission surface being close to an incidence surface in the lens unit and with an end on the opposite side of the housing aperture in an emission surface being apart from an incidence surface in the lens unit. The lens unit has an optical characteristic of optically enlarging an optical path length difference according to a virtual image distance difference.Type: ApplicationFiled: November 9, 2021Publication date: March 3, 2022Inventors: Akio MISAWA, Nozomu SHIMODA, Yuji FUJITA, Shigeki HOSHINO
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Publication number: 20220043261Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.Type: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Applicants: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko YATSU, Koji HIRATA, Shigeki HOSHINO
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Patent number: 11221480Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.Type: GrantFiled: April 26, 2016Date of Patent: January 11, 2022Assignees: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Koji Hirata, Masahiko Yatsu, Toshinori Sugiyama, Kazuomi Kaneko, Shigeki Hoshino
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Patent number: 11199700Abstract: The head-up display device includes a display element that emits image light and a virtual image optical system. The virtual image optical system includes a lens unit and a free curved surface mirror disposed along the emission direction of the image light in this order from a position close to the display element. The display element is disposed with a tilting attitude with respect to the optical axis of the lens unit with an end on the housing aperture side in an emission surface being close to an incidence surface in the lens unit and with an end on the opposite side of the housing aperture in an emission surface being apart from an incidence surface in the lens unit. The lens unit has an optical characteristic of optically enlarging an optical path length difference according to a virtual image distance difference.Type: GrantFiled: February 5, 2018Date of Patent: December 14, 2021Assignee: MAXELL, LTD.Inventors: Akio Misawa, Nozomu Shimoda, Yuji Fujita, Shigeki Hoshino
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Publication number: 20210349311Abstract: A head up display that projects a video onto a windshield of a transportation, thereby displaying a virtual image related to the video to a driver, the head up display including a video display device including a light source and a display element and configured to form the video, and video light projecting means configured to project and reflect a video light emitted from the video display device on the windshield, thereby displaying the virtual image in front of the transportation, the video light projecting means including a reflection mirror that reflects the video light emitted from the video display device to the windshield, and the reflection mirror including, on its outer peripheral portion, deflection means configured to direct a reflected light in a direction different from a direction toward a line of sight of the driver.Type: ApplicationFiled: May 17, 2019Publication date: November 11, 2021Applicant: Maxell, Ltd.Inventors: Shigeki HOSHINO, Hidemi YAMADA, Toshinori SUGIYAMA
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Patent number: 11169376Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.Type: GrantFiled: October 4, 2016Date of Patent: November 9, 2021Assignee: MAXELL, LTD.Inventors: Masahiko Yatsu, Koji Hirata, Shigeki Hoshino
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Patent number: 10890763Abstract: Provided is an information display apparatus that significantly improves light resistance with respect to sunlight. The information display apparatus, which displays video-image information on a projection surface by a virtual image, includes in a housing partly having an opening: a video-image-light generator that generates video-image light for displaying the video-image information; a video-image-light processor that performs a predetermined optical processing to a video image generated by the video-image-light generator; and a projector that projects, onto the projection surface through the opening of the housing, the video-image light optically processed by the video-image-light processor so that a viewer is capable of virtually recognizing the video-image information as a virtual image in front of the projection surface, wherein a light path in the housing is provided with a suppressor selectively suppressing a P-polarizing component of light in a visible light region.Type: GrantFiled: November 13, 2017Date of Patent: January 12, 2021Assignee: MAXELL, LTD.Inventors: Koji Hirata, Masahiko Yatsu, Toshinori Sugiyama, Akio Misawa, Shigeki Hoshino, Kazuomi Kaneko, Tatsuya Nakazawa, Takumi Nakada, Yuki Nagano, Tomoki Yamamoto
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Patent number: 10852539Abstract: A compact head-up display device is provided. For that purpose, the head-up display device includes a projection optical system which includes an image forming unit to display image information and an ocular optical system to reflect light emitted from the image forming unit to display a virtual image. In the ocular optical system, a free-form surface lens and a free-form surface concave mirror are arranged in order from the image forming unit. The shape of the free-form surface concave mirror is such that curvature radius RY1 in projection on a vertical cross section of the coordinate system of an eye-box is smaller than curvature radius RX1 in projection on a horizontal cross section.Type: GrantFiled: May 20, 2016Date of Patent: December 1, 2020Assignees: Maxell, Ltd., Hitachi Industry & Control Solutions, Ltd.Inventors: Masahiko Yatsu, Koji Hirata, Shigeki Hoshino
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Patent number: 10814723Abstract: It is an object of the present invention to provide a projection optical system having a minimal optical configuration while ensuring necessary capabilities and a head-up display device having a tilted virtual image plane. The head-up display device according to the present invention includes an image forming unit to emit image light containing image information and an eyepiece optical system to display a virtual image by reflecting the image light. While a virtual image plane is tilted to display a virtual image in a range from a far distance to a near distance, a point on the image forming unit conjugating to a far point on the virtual image plane is optically farther from a light flux entering the image forming unit than a point on the image forming unit conjugating to a near point on the virtual image plane.Type: GrantFiled: October 4, 2016Date of Patent: October 27, 2020Assignees: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko Yatsu, Koji Hirata, Shigeki Hoshino
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Publication number: 20200319456Abstract: A projection optical system includes an eyepiece optical system configured to refract and reflect a light emitted from an image forming unit for forming image information to display a virtual image, wherein the eyepiece optical system includes at least a concave lens, a folding mirror, and a concave mirror which are successively placed in order from the image forming unit including a liquid crystal display panel. The projection optical system configured as above is provided on a head-up display.Type: ApplicationFiled: July 4, 2017Publication date: October 8, 2020Applicants: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko YATSU, Koji HIRATA, Shigeki HOSHINO
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Patent number: 10788665Abstract: Provided is a head-up display device which has a virtual image plane shape becoming a part of a concave shape as viewed from the driver side. This head-up display device (30) includes: an image forming unit (10) that displays image information; and a projection optical system including an ocular optical system (5) that displays a virtual image by reflecting light emitted from the image forming unit (10). The ocular optical system (5) includes spherical lenses (51), (52), (53), and a free-form curved surface mirror (56), and is configured by arranging the spherical lenses (51), (52), (53) and the free-form curved surface mirror (56) in this order along the light emission direction.Type: GrantFiled: October 9, 2015Date of Patent: September 29, 2020Assignees: MAXELL, LTD., HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.Inventors: Masahiko Yatsu, Kazuomi Kaneko, Shigeki Hoshino