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公开(公告)号：US11768411B2
公开(公告)日：2023-09-26
申请号：US17748571
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a liquid-crystal panel including a display screen, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space, where the light-diffusion structure is thinner than the Fresnel lens, and the light-diffusion structure has a thickness equal to or smaller than 300 μm.
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公开(公告)号：US11709400B2
公开(公告)日：2023-07-25
申请号：US17733482
申请日：2022-04-29
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a liquid-crystal panel including a display screen provided at a front surface thereof, a Fresnel lens opposite the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the Fresnel lens, a body part accommodating the Fresnel lens, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space. The body part has a step-shaped structure including a first step surface and a second step surface, the first step surface and the second step surface are oriented in the same direction as the front surface of the liquid-crystal panel, the first step surface is located on the liquid-crystal panel side from the second step surface, and the liquid-crystal panel is supported on the second step surface.
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公开(公告)号：US11768410B2
公开(公告)日：2023-09-26
申请号：US17748520
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a display system that has a liquid-crystal panel including a display screen, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, and a backlight that emits light toward the Fresnel lens. The head-up display also includes a first mirror that reflects light from the display system, a second mirror that reflects light from the first mirror, and a control circuit that controls the liquid-crystal panel, where a center of the second mirror is closer to a center of the control circuit than a center of the display system in a direction connecting a center of the first mirror and the center of the second mirror.
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公开(公告)号：US11740517B2
公开(公告)日：2023-08-29
申请号：US17748213
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a liquid-crystal panel including a display screen, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, a light-diffusion member between the liquid-crystal panel and the heat-transfer member, a backlight that emits light toward the heat-transfer member, a heat sink disposed along at least one side of the Fresnel lens and one side of backlight, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space, where a light-diffusion structure is provided to a surface of the light-diffusion member facing the liquid-crystal panel.
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公开(公告)号：US11703686B2
公开(公告)日：2023-07-18
申请号：US17849156
申请日：2022-06-24
Inventor： Takato Hada , Tomoaki Miyamoto
CPC classification number: G02B27/0101 , B60K35/00 , B60K2370/1529 , B60K2370/23 , B60K2370/31 , B60K2370/334 , B60K2370/785 , G02B2027/0118
Abstract: A head-up display includes: a display medium; a display that displays an image; and a projection optical system that forms a virtual image by guiding the image displayed by the display to the display medium. The projection optical system includes a first mirror disposed above the display and reflecting display light of the image. 3
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Patent Agency Ranking
公开(公告)号：US12189246B2
公开(公告)日：2025-01-07
申请号：US18243162
申请日：2023-09-07
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02B27/01 , G02F1/1333 , G02F1/1347 , G03B21/16 , B60K35/60
Abstract: Provided is a head-up display including a backlight configured to emit light, a light-diffusion member through which the light emitted by the backlight is transmitted, a Fresnel lens through which the light transmitted through the light-diffusion member is transmitted, a display screen through which the light transmitted through the Fresnel lens is transmitted, and a mirror that reflects the light transmitted through the light-diffusion member toward a target space.
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公开(公告)号：US11754890B2
公开(公告)日：2023-09-12
申请号：US17748504
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a liquid-crystal panel including a display screen, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the light-transmissive member, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space, where the light-diffusion structure includes a plurality of fine particles and an average particle size of the plurality of fine particles is equal to or smaller than 20 um.
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公开(公告)号：US11733570B2
公开(公告)日：2023-08-22
申请号：US17748151
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: Provided is a head-up display including a liquid-crystal panel including a display screen, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the Fresnel lens, a light-transmissive member between the backlight and the Fresnel lens, a body part accommodating the light-transmissive member, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space, where a surface of the Fresnel lens facing the backlight is uneven.
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公开(公告)号：US12013532B2
公开(公告)日：2024-06-18
申请号：US18201962
申请日：2023-05-25
Inventor： Takato Hada , Tomoaki Miyamoto
CPC classification number: G02B27/0101 , B60K35/00 , B60K35/23 , B60K35/60 , B60K2360/23 , B60K2360/31 , B60K2360/334 , B60K2360/785 , G02B2027/0118
Abstract: A head-up display includes: a display that displays an image; and a projection optical system that forms a virtual image. The projection optical system includes: a first mirror disposed above the display that reflects display light of the image; and a second mirror that reflects the display light from the first mirror toward a display medium onto which the virtual image is projected. Moreover, a first expression that defines a sag height at a position (x, y) relative to an axis that defines a plane is satisfied. Moreover, second and third expressions related to variable in the first expression are also satisfied.
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公开(公告)号：US11789324B2
公开(公告)日：2023-10-17
申请号：US17748497
申请日：2022-05-19
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G02F1/13 , G02F1/1347 , G02F1/1333 , G02B27/01 , G03B21/16
CPC classification number: G02F1/1347 , G02B27/0101 , G02F1/133382 , G03B21/16 , B60K2370/334 , B60K2370/785
Abstract: A head-up display includes a liquid-crystal panel including a display screen provided at a front surface thereof, a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the Fresnel lens, a light-transmissive member between the backlight and the Fresnel lens, a body part accommodating the Fresnel lens, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space. The body part has a step-shaped structure including a first step surface and a second step surface, the first and second step surfaces are oriented in the same direction as the front surface of the liquid-crystal panel. The first step surface is located on the liquid-crystal panel side from the second step surface.
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