-
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.
-
公开(公告)号：US11768371B2
公开(公告)日：2023-09-26
申请号：US17613261
申请日：2020-05-11
Inventor： Hiroki Hara , Yosuke Asai , Keiji Sugiyama , Yuji Takase
CPC classification number: G02B27/0101 , B60K35/00 , H04N9/3141 , G02B2027/0118
Abstract: A projection device includes: a plurality of light sources arranged in a first direction; a spatial modulation element that modulates incident light into image information and emits the image information; a lens that changes an optical path of light emitted from each of the plurality of light sources such that the light emitted from each light source reaches substantially the same region of an incident surface of the spatial modulation element; and a first reflective optical member that deflects the light emitted from the lens toward the spatial modulation element, the first reflective optical member having a shape that reflects light emitted from the lens so as to be incident on an arbitrary point on the incident surface of the spatial modulation element at a predetermined reference incident angle.
-
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.
-
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.
-
公开(公告)号：US11726374B2
公开(公告)日：2023-08-15
申请号：US17666184
申请日：2022-02-07
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 Fresnel lens, a backlight emitting light toward the Fresnel lens, a heat sink accommodating the light-diffusion member, the backlight 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 a surface of the Fresnel lens facing the backlight is uneven.
-
Patent Agency Ranking
公开(公告)号：US11709401B2
公开(公告)日：2023-07-25
申请号：US17748143
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, 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 length of the liquid-crystal panel in a longitudinal direction of the head-up display is longer than a length of the light-transmissive member in the longitudinal direction.
-
公开(公告)号：US11275281B2
公开(公告)日：2022-03-15
申请号：US17094239
申请日：2020-11-10
Inventor： Takato Hada , Takahiro Akiyoshi , Hiroki Hara , Keiji Sugiyama
IPC: G03B21/16 , G02F1/1347 , G02F1/1333 , G02B27/01
Abstract: Provided is a display that includes a liquid-crystal panel, a heat-transfer member, and a light-diffusion member between the liquid-crystal panel and the heat-transfer member. The display includes a liquid-crystal panel, a heat-transfer member, and a light-diffusion structure. The liquid-crystal panel includes a display screen. The heat-transfer member is light-transmissive. The heat-transfer member is on an opposite side of the liquid-crystal panel from the display screen.
-
公开(公告)号：US12204100B2
公开(公告)日：2025-01-21
申请号：US18375665
申请日：2023-10-02
Inventor： Wahei Agemizu , Kazumasa Takata , Masaru Fujita , Tomohisa Sakaguchi , Hiroki Hara , Masaki Amie
Abstract: An optical system includes a light guide member having an incident surface, a first surface and a light emergent surface; and at least one prism provided on the first surface and configured to reflect light received by the incident surface and travelling inside the light guide member, towards the light emergent surface. The light guide member provides an optical path along which the light that has entered through the incident surface is directly reflected from the prism and allowed to emerge from the light emergent surface. The light guide member also provides another optical path along which the light that has entered through the incident surface is once reflected from the second surface, reflected again from the prism, and then allowed to emerge from the light emergent surface. The optical system is configured to be coupled to a light source, to illuminate a display system which projects a virtual image onto a target space.
-
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.
-
公开(公告)号：US11835719B2
公开(公告)日：2023-12-05
申请号：US17509484
申请日：2021-10-25
Inventor： Wahei Agemizu , Kazumasa Takata , Masaru Fujita , Tomohisa Sakaguchi , Hiroki Hara , Masaki Amie
CPC classification number: G02B27/0101 , B60K35/00 , G02B6/003 , G02B6/0036 , B60K2370/1529 , B60K2370/23 , B60K2370/336 , G02B2027/0118
Abstract: An optical system includes a light guide member having a light incident surface, a first surface, and a light emergent surface facing the first surface; and a prism provided in the first surface for reflecting light passing inside the light guide member towards the light emergent surface. The light guide member includes a direct optical path, along which the light that has entered the light guide member through the incident surface is directly reflected from the prism and allowed to emerge from the light emergent surface. At least one of the first surface or the light emergent surface includes a luminous intensity distribution control member configured to control a luminous intensity distribution of light to be extracted from the light emergent surface. The luminous intensity distribution control member includes a Fresnel lens.
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.021 seconds)
