US 11,719,932 B2
Head-up display
Haruhiko Yoneda, Kyoto (JP); Souta Sato, Kyoto (JP); and Nozomu Shimoda, Kyoto (JP)
Assigned to MAXELL, LTD., Kyoto (JP)
Appl. No. 17/258,465
Filed by MAXELL, LTD., Kyoto (JP)
PCT Filed Jun. 17, 2019, PCT No. PCT/JP2019/023955
§ 371(c)(1), (2) Date Jan. 7, 2021,
PCT Pub. No. WO2020/012879, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 2018-133706 (JP), filed on Jul. 13, 2018.
Prior Publication US 2021/0271079 A1, Sep. 2, 2021
Int. Cl. B60K 35/00 (2006.01); G02B 27/01 (2006.01); G06K 9/00 (2022.01); B60R 1/00 (2022.01); G06V 20/56 (2022.01)
CPC G02B 27/0101 (2013.01) [B60K 35/00 (2013.01); B60R 1/00 (2013.01); G06V 20/56 (2022.01); B60K 2370/1529 (2019.05); B60K 2370/23 (2019.05); B60K 2370/31 (2019.05); B60K 2370/333 (2019.05); B60K 2370/336 (2019.05); B60R 2300/205 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0138 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A head-up display for irradiating an image light including a display object toward a projection target member so as to display the display object as a virtual image, the head-up display comprising:
an image display device including a light source and a display element, the image display device being configured to output the image light generated by a light which has been emitted from the light source and transmitted through the display object displayed on a display surface of the display element; and
a main controller connected to the image display device,
wherein
the main controller is configured to:
acquire road surface information of a front road surface based on a plurality of measurement points on the front road surface, the plurality of measurement points being detected by a road surface detection sensor mounted on a vehicle with the head-up display and being positioned forward of a traveling direction of the vehicle;
calculate, by using the road surface information, a virtual image plane position on a virtual image plane where the virtual image of the display object is displayed, the virtual image plane position being a display position of the virtual image for displaying the virtual image of the display object displayed on the display surface of the display element along the front road surface;
calculate a display position of the display surface of the display element corresponding to the virtual image plane position so as to output, to the image display device, a control signal for displaying the display object on the display position of the display surface of the display element; and
calculate a height from the ground surface for displaying the virtual image on the virtual image plane as the virtual image plane position.