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公开(公告)号：US12055713B2
公开(公告)日：2024-08-06
申请号：US17988156
申请日：2022-11-16
Inventor： Kazuhiro Minami , Hiroaki Okayama
CPC classification number: G02B27/0101 , G09G3/001 , G09G2320/0693 , G09G2340/0464 , G09G2354/00 , G09G2380/10
Abstract: A head-up display system displays a virtual image superimposed on a real view that can be visually recognized through a window part. The head-up display system includes a display part, an optical system, a light source part, an operation part, and a controller. The controller controls a display area of the display part in accordance with an operation of the operation part by the observer. The light flux emitted from the display part is reflected by the window part and reaches a visually recognizable area where the observer can visually recognize the virtual image. The light emitted from the light source part is reflected inside an area where the light flux is reflected by the window part and reaches the visually recognizable area. The virtual image and the light from the light source part are superimposed, and can be visually recognized.
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公开(公告)号：US11428928B2
公开(公告)日：2022-08-30
申请号：US16998378
申请日：2020-08-20
Inventor： Satoshi Kuzuhara , Hiroaki Okayama
Abstract: A head-up display of the present disclosure projects a display image on a transparent reflecting member. The head-up display includes: a display device that displays the display image; and a projection optical system that projects the display image displayed on the display device. On an assumption that light reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is reference light, the projection optical system includes a prism element that has an incident surface, a reflection surface, and an emitting surface different from the incident surface sequentially in an optical path from the display device. The emitting surface is inclined to the reference light. An inclination amount θ2 of the reference light emitted from the emitting surface with respect to the emitting surface lies in a range of 15°
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公开(公告)号：US11415800B2
公开(公告)日：2022-08-16
申请号：US17128417
申请日：2020-12-21
Inventor： Satoshi Kuzuhara , Hiroaki Okayama
Abstract: A head-up display for displaying an image as a virtual image to an observer includes a projection optical system that includes a lens element and a reflecting mirror. A light beam reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is defined as a reference light beam. The lens element is inclined with respect to the reference light beam. The lens element includes an entrance surface on which light of the image is incident, an exit surface from which light of the image emerges, a first edge portion, and a second edge portion. The second edge portion is inclined so that, when light emitted from the image travels through the entrance surface, the second edge portion, and the exit surface in this order, light emerging from the exit surface reaches below a central portion of the reflecting mirror.
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公开(公告)号：US11009781B2
公开(公告)日：2021-05-18
申请号：US16363628
申请日：2019-03-25
Inventor： Koji Taniguchi , Hiroaki Okayama , Satoshi Kuzuhara , Yusuke Nihei
IPC: G03B21/14 , G03B21/28 , G02F1/1335 , G06F9/30 , H04N9/77 , G02B27/01 , G02F1/13357
Abstract: A display system includes an image producing unit, a projection unit and an adjustment unit. The image producing unit has a display surface, and is configured to produce an image on the display surface. The projection unit is configured to project a virtual image to a target space with an output light of the image producing unit. The virtual image corresponds to the image produced by the image producing unit. The display system is configured to change a visual distance between an eye-box and the virtual image. The adjustment unit is configured to adjust brightness of the virtual image according to the visual distance.
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公开(公告)号：US10937345B2
公开(公告)日：2021-03-02
申请号：US16447309
申请日：2019-06-20
Inventor： Makoto Funabiki , Koji Taniguchi , Hiroaki Okayama , Masafumi Higashiyama , Yosuke Shibazaki
Abstract: A video display system according to an embodiment includes a display unit, a projection unit, and a display control unit. The display unit displays an image thereon. The projection unit projects a virtual image corresponding to the image onto a target space with outgoing light of the display unit. The display control unit is able to change a projection distance from a viewpoint of a user, who is viewing the virtual image, to the virtual image projected onto the target space. The display control unit changes the projection distance in a change pattern. The change pattern varies according to situation information.
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Patent Agency Ranking
公开(公告)号：US10591725B2
公开(公告)日：2020-03-17
申请号：US16570203
申请日：2019-09-13
Inventor： Ken'ichi Kasazumi , Toshiya Mori , Hiroaki Okayama , Satoshi Kuzuhara , Hiroyuki Furuya , Hiroshi Gotou , Akira Kurozuka
Abstract: A display device is provided and may include a light source that emits a light beam, a scanner that causes the light beam to scan, a movable screen in which an image is formed by transmitting the light beam from scanner, an optical system configured to project the image on a display medium, and a driver configured to cause the movable screen to reciprocate in moving directions. The image includes a first image and a second image. The movable screen reciprocates in a posture inclined with respect to the moving directions such that a second end of the movable screen is positioned closer to the scanner than a first end of the movable screen. The scanner forms the second image in the movable screen while the movable screen moves such that a forming direction of the second image is inclined with respect to a direction approaching the scanner.
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公开(公告)号：US09958677B2
公开(公告)日：2018-05-01
申请号：US15383401
申请日：2016-12-19
Inventor： Satoshi Kuzuhara , Hiroaki Okayama
CPC classification number: G02B27/0101 , G02B17/008 , G02B17/0848 , G02B2027/0123 , G02B2027/0145 , G02B2027/0147 , G02B2027/015
Abstract: A head-up display that allows an observer to visually recognize a virtual image in a viewpoint region of the observer is provided. The head-up display includes: a display device that has a display surface and displays an image on the display surface; and a first optical system that has a concave mirror, and a lens condensing the light and disposed between the concave mirror and the display surface. The first optical system causes a beam exiting from the display surface to form an intermediate image via the lens and the concave mirror, the intermediate image being enlarged from the image displayed on the display surface.
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公开(公告)号：US12263732B2
公开(公告)日：2025-04-01
申请号：US17950606
申请日：2022-09-22
Inventor： Yoshiteru Mino , Hideki Takahashi , Masaki Tada , Toshiya Mori , Hiroaki Okayama , Kazuhiro Minami
Abstract: Imaging and display system includes: a display; an optical system including a first mirror and a second mirror; a housing; a light-transmissive cover transparent to light and disposed to cover at least part of an opening of the housing; and a driver monitoring camera supported by a supporting body connected outside of the housing. First light emitted from the display passes through the light-transmissive cover via the optical system, and is reflected by a windshield toward a direction of the user. The driver monitoring camera captures an image of a driver shown on the light-transmissive cover by second light from a direction of the driver reflected by the windshield toward a direction of the light-transmissive cover.
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9.发明授权公开(公告)号：US11789260B2
公开(公告)日：2023-10-17
申请号：US17852796
申请日：2022-06-29
Inventor： Satoshi Kuzuhara , Hiroaki Okayama
CPC classification number: G02B27/0025 , B60K35/00 , G02B27/0101 , B60K2370/334 , B60K2370/66 , G02B2027/011 , G02B2027/0145
Abstract: A head-up display of the present disclosure projects a display image on a transparent reflecting member. The head-up display includes: a display device that displays the display image; and a projection optical system that projects the display image displayed on the display device. On an assumption that light reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is reference light, the projection optical system includes a prism element that has an incident surface, a reflection surface, and an emitting surface different from the incident surface sequentially in an optical path from the display device. The emitting surface is inclined to the reference light. An inclination amount θ2 of the reference light emitted from the emitting surface with respect to the emitting surface lies in a range of 15°
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公开(公告)号：US10656415B2
公开(公告)日：2020-05-19
申请号：US15779066
申请日：2016-11-28
Inventor： Satoshi Kuzuhara , Hiroaki Okayama , Yosuke Asai
Abstract: Head-up display includes display device, projection optical system, a polarization member, and a first polarizer. Display device displays an image. Projection optical system includes refraction lens. Projection optical system projects the image displayed on display device to an observer. The polarization member is disposed between projection optical system and a reflection member that reflects light from projection optical system. Transmittance of the polarization member depends on a polarization direction of transmitted light. The first polarizer is disposed behind refraction lens on an optical path starting from display device. The first polarizer rotates a predetermined polarized component by a quarter of wavelength.
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