US 12,072,488 B2
Display device, head-up display, and mobile object
Shunsuke Tomomatsu, Osaka (JP); and Yosuke Asai, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Dec. 1, 2022, as Appl. No. 18/072,920.
Application 18/072,920 is a continuation of application No. PCT/JP2021/006905, filed on Feb. 24, 2021.
Claims priority of application No. 2020-097748 (JP), filed on Jun. 4, 2020.
Prior Publication US 2023/0097752 A1, Mar. 30, 2023
Int. Cl. G02B 27/01 (2006.01); B60K 35/00 (2006.01); G02B 3/06 (2006.01); G02B 3/08 (2006.01); B60K 35/23 (2024.01)
CPC G02B 27/0101 (2013.01) [B60K 35/00 (2013.01); G02B 3/06 (2013.01); G02B 3/08 (2013.01); B60K 35/23 (2024.01)] 12 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel that displays an image;
a plurality of light sources arranged in a first direction orthogonal to a normal direction of the display panel;
a light guide panel on which a light from the plurality of light sources is incident and including an emission surface that emits a light toward the display panel; and
a first optical member disposed between the display panel and the light guide panel and including a first surface opposing the emission surface of the light guide panel, a second surface provided opposite to the first surface to oppose the display panel, a Fresnel lens provided on the first surface, and an optical array provided on the second surface, wherein
the optical array emits and diffuses a light toward the display panel, and
as viewed in at least one of the first direction and a second direction orthogonal to both the normal direction and the first direction, the Fresnel lens emits a light passing through a center of the display panel in a direction inclined with respect to the normal direction.