Display, display system, image projection system, and movable object
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.
1. A head-up display comprising:
a liquid-crystal panel including a display screen;
a Fresnel lens disposed below the display screen;
a light-diffusion member between the liquid-crystal panel and a 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, wherein
a light-diffusion structure is provided to a surface of the light-diffusion member facing the liquid-crystal panel.
2. The head-up display according to claim 1 , wherein
a length of the liquid-crystal panel in the longitudinal direction is longer than a length of the Fresnel lens in the longitudinal direction.
3. The head-up display according to claim 1 , wherein
an uneven surface of the Fresnel lens is on the backlight side.
4. The head-up display according to claim 1 , wherein
the heat sink has a plurality of plate-shaped fins protruding from an outer surface of the heat sink in a direction intersecting a direction in which the light-diffusion member and the Fresnel lens are arranged.
5. The head-up display according to claim 1 , wherein
the light-diffusion member is thinner than the Fresnel lens.
6. The head-up display according to claim 1 , wherein
the heat sink is made of aluminum.
7. The head-up display according to claim 1 , wherein
the backlight includes light emitting diodes or laser diodes.
8. A head-up display comprising:
a liquid-crystal panel including a display screen;
a Fresnel lens disposed below the display screen;
a light-diffusion member between the liquid-crystal panel and a 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, wherein
a light-diffusion structure is provided to a surface of the light-diffusion member opposite to the liquid-crystal panel.
9. The head-up display according to claim 8 , wherein
a length of the liquid-crystal panel in the longitudinal direction is longer than a length of the Fresnel lens in the longitudinal direction.
10. The head-up display according to claim 8 , wherein
an uneven surface of the Fresnel lens is on the backlight side.
11. The head-up display according to claim 8 , wherein
the heat sink has a plurality of plate-shaped fins protruding from an outer surface of the heat sink in a direction intersecting a direction in which the light-diffusion member and the Fresnel lens are arranged.
12. The head-up display according to claim 8 , wherein
the light-diffusion member is thinner than the Fresnel lens.
13. The head-up display according to claim 8 , wherein
the heat sink is made of aluminum.
14. The head-up display according to claim 8 , wherein
the backlight includes light emitting diodes or laser diodes.
15. A head-up display comprising:
a liquid-crystal panel including a display screen;
a heat-transfer member disposed below 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, wherein
a light-diffusion structure is provided to a surface of the heat-transfer member facing the liquid-crystal panel.
16. The head-up display according to claim 15 , wherein
a length of the liquid-crystal panel in the longitudinal direction is longer than a length of the Fresnel lens in the longitudinal direction.
17. The head-up display according to claim 15 , wherein
an uneven surface of the Fresnel lens is on the backlight side.
18. The head-up display according to claim 15 , wherein
the heat sink has a plurality of plate-shaped fins protruding from an outer surface of the heat sink in a direction intersecting a direction in which the light-diffusion member and the Fresnel lens are arranged.
19. The head-up display according to claim 15 , wherein
the light-diffusion member is thinner than the Fresnel lens.
20. The head-up display according to claim 15 , wherein
the heat sink is made of aluminum.