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公开(公告)号：US11125994B2
公开(公告)日：2021-09-21
申请号：US16328714
申请日：2017-09-08
Inventor： Ken'ichi Kasazumi , Kosuke Kubota , Masahito Ogata , Toshiya Mori
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. The MEMS scanner changes a vertical movement speed of a scan line according to a shape of an object included in a background and is superimposed with the virtual image in scanning performed with the laser light at a scanning cycle in synchronization with a cycle of the reciprocation.
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公开(公告)号：US10670780B2
公开(公告)日：2020-06-02
申请号：US16068956
申请日：2017-01-10
Inventor： Ken′ichi Kasazumi , Toshiya Mori , Kosuke Kubota , Masahito Ogata , Hiroaki Okayama , Satoshi Kuzuhara
Abstract: The present invention provides a Fresnel lens that can reduce generation of concentric stray light. The Fresnel lens includes a sawtooth corrugated face that is formed by alternately disposing a first face inclined relative to optical axis A and a second face substantially parallel to optical axis A, and a light shielding mask is formed at a position corresponding to the second face.
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公开(公告)号：US11892628B2
公开(公告)日：2024-02-06
申请号：US17480425
申请日：2021-09-21
Inventor： Masahito Ogata , Yoshiteru Mino , Kosuke Kubota , Toshiya Mori
CPC classification number: G02B27/0101 , B60K35/00 , G09G3/02 , B60K2370/152 , B60K2370/178 , B60K2370/333 , G02B2027/014 , G02B2027/0141 , G09G2320/0633 , G09G2340/0442 , G09G2354/00 , G09G2360/144 , G09G2380/10
Abstract: A video display system includes: a screen on which an mage for displaying a virtual image is projected; a light source that emits laser light; a scanner that projects the image onto the screen by biaxially scanning the laser light onto the screen; and a controller that generates the image and controls the light source using an image signal for causing the generated image to be projected onto the screen by the laser light, and receives an input of sensing information measured using a temperature sensor and controls the scanner in accordance with the input sensing information. When the sensing information indicates a temperature outside a given temperature range, the controller causes the scanner to reduce an amplitude of the biaxial scanning in at least one axial direction to a smaller value than when the sensing information indicates a second brightness or a temperature within the given temperature range.
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公开(公告)号：US10663722B2
公开(公告)日：2020-05-26
申请号：US16066356
申请日：2016-11-21
Inventor： Ken'ichi Kasazumi , Toshiya Mori , Kosuke Kubota , Masahito Ogata
Abstract: The display device includes: a display unit that projects a light beam onto a windshield so that the light beam is reflected from the windshield such that one or more virtual images are displayed in a space further than the windshield in a depth direction through the windshield; and a controller that controls the display unit so that a first vertical image and a second vertical image included in the one or more virtual images and have different distances from the windshield in the depth direction, are displayed in a time-division manner.
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公开(公告)号：US10571701B2
公开(公告)日：2020-02-25
申请号：US16068393
申请日：2017-01-10
Inventor： Ken'ichi Kasazumi , Toshiya Mori , Kosuke Kubota , Masahito Ogata
Abstract: Provided is a display device that allows a distance from a display medium to an object ahead to be easily ascertained. The display device includes a display unit that projects a light beam onto a windshield so as to be reflected from the windshield such that a virtual image is displayed in a space further than the windshield in the depth direction, and a controller that controls the display unit so that a reference pattern to be superimposed on a pedestrian present in the space is displayed so as to correspond to the position of the pedestrian.
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Patent Agency Ranking
公开(公告)号：US11181737B2
公开(公告)日：2021-11-23
申请号：US16319536
申请日：2017-07-18
Inventor： Kosuke Kubota , Ken'ichi Kasazumi , Masahito Ogata , Toshiya Mori
IPC: G02B27/01
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. The HUD device includes a display controller that specifies display position on the basis of position indicated by display item information and correction position obtained by correcting position indicated by travel information acquired last in accordance with state indicated by state information and displays an image showing display content indicated by display item information at the specified display position on the display medium when a predetermined condition is satisfied.
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公开(公告)号：US10983343B2
公开(公告)日：2021-04-20
申请号：US16363534
申请日：2019-03-25
Inventor： Kosuke Kubota , Ken'ichi Kasazumi , Yoshiteru Mino , Toshiya Mori
Abstract: A display system according to an aspect includes a screen, a drive control unit, and a projection unit. The drive control unit has the screen moved in a movement direction. The projection unit renders an image on the screen by irradiating the screen with a light beam that scans the screen and projects a virtual image onto a projection plane with the light beam transmitted through the screen. The drive control unit has the screen moved in the movement direction such that an optical path leading to a rendering point on the screen varies its length according to a tilt angle defined by the projection plane with respect to a reference plane.
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公开(公告)号：US10754154B2
公开(公告)日：2020-08-25
申请号：US16576908
申请日：2019-09-20
Inventor： Ken'ichi Kasazumi , Toshiya Mori , Kosuke Kubota , Masahito Ogata , Masanaga Tsuji
Abstract: A display device includes an image forming unit, a projection unit, a main body, and a position correcting unit. The image forming unit includes a display surface and forms an image on the display surface. The projection unit projects a virtual image corresponding to an image on a target space by using output light from the image forming unit. The main body is equipped with an image forming unit and a projection unit. The position correcting unit changes a display position of a virtual image relative to the main body on the basis of an orientation signal representing an orientation of the main body. The position correcting unit includes a plurality of correcting units that change a display position of a virtual image by using different means. The position correcting unit selects at least one correcting unit from a plurality of correcting units in accordance with a frequency component of an orientation signal, and causes the selected correcting unit to change a display position of a virtual image.
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公开(公告)号：US10473966B2
公开(公告)日：2019-11-12
申请号：US15977342
申请日：2018-05-11
Inventor： Kouzou Yuuki , Junichi Nonaka , Kosuke Kubota
IPC: G02F1/133 , G02F1/1333 , B60K35/00 , G02B27/01 , G02F1/1335
Abstract: A display device includes a light source, an optical system, a liquid crystal panel, and a first heat sink. The optical system converts light emitted from the light source into irradiation light that is to be an irradiation area having a predetermined width. The liquid crystal panel receives the irradiation light. The first heat sink includes an opening through which the irradiation light passes, and supports the liquid crystal panel. The first heat sink is in contact with the liquid crystal panel.
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10.发明授权公开(公告)号：US11064172B2
公开(公告)日：2021-07-13
申请号：US16822814
申请日：2020-03-18
Inventor： Fumihito Inukai , Kosuke Kubota , Yukihiro Chokyu
IPC: H04N9/31
Abstract: An image display system includes: a light source driver configured to supply, to a light source, a drive current including a first current and a second current; a processor configured to output the set value of the first current to the light source driver; and a corrector configured to perform a correction process on the first current. The processor is configured to set, based on a correspondence relationship between the gradation value and the current value of the first current, the set value of the first current to a current value determined with reference to the correspondence relationship when the gradation value is in a second gradation range in which numerical values are smaller than numerical values in the first gradation range, the correction process correcting the correspondence relationship such that a difference between a measured intensity and a target intensity of the light source falls within a prescribed range.
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