公开(公告)号：US11754890B2

公开(公告)日：2023-09-12

申请号：US17748504

申请日：2022-05-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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.

公开(公告)号：US11733570B2

公开(公告)日：2023-08-22

申请号：US17748151

申请日：2022-05-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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.

公开(公告)号：US11768411B2

公开(公告)日：2023-09-26

申请号：US17748571

申请日：2022-05-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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.

公开(公告)号：US11709400B2

公开(公告)日：2023-07-25

申请号：US17733482

申请日：2022-04-29

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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.