US 11,789,324 B2
Display, display system, image projection system, and movable object
Takato Hada, Osaka (JP); Takahiro Akiyoshi, Fukui (JP); Hiroki Hara, Osaka (JP); and Keiji Sugiyama, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed on May 19, 2022, as Appl. No. 17/748,497.
Application 17/748,497 is a continuation of application No. 17/666,184, filed on Feb. 7, 2022.
Application 17/666,184 is a continuation of application No. 17/094,239, filed on Nov. 10, 2020, granted, now 11,275,281, issued on Mar. 15, 2022.
Application 17/094,239 is a continuation of application No. 16/454,218, filed on Jun. 27, 2019, granted, now 10,871,686, issued on Dec. 22, 2020.
Claims priority of application No. 2018-125448 (JP), filed on Jun. 29, 2018.
Prior Publication US 2022/0283456 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/13 (2006.01); G02F 1/1347 (2006.01); G02F 1/1333 (2006.01); G02B 27/01 (2006.01); G03B 21/16 (2006.01)
CPC G02F 1/1347 (2013.01) [G02B 27/0101 (2013.01); G02F 1/133382 (2013.01); G03B 21/16 (2013.01); B60K 2370/334 (2019.05); B60K 2370/785 (2019.05)] 14 Claims
OG exemplary drawing
 
1. A head-up display comprising:
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 disposed below the liquid-crystal panel and above 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 which is frame shaped; 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, wherein
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 second step surface has a first surface extending in a first direction which is parallel to a longitudinal direction of the second step surface and a second surface extending in a second direction different from the first direction, and the length of the first surface in the second direction is shorter than the length of the second surface in the first direction.