US 12,434,632 B2
Display system including display control unit and optical device
Tetsuo Sato, Fukushima (JP)
Assigned to ALPS ALPINE CO., LTD., Tokyo (JP)
Filed by Alps Alpine Co., LTD, Tokyo (JP)
Filed on Oct. 26, 2022, as Appl. No. 17/974,029.
Claims priority of application No. 2021-181646 (JP), filed on Nov. 8, 2021.
Prior Publication US 2023/0140960 A1, May 11, 2023
Int. Cl. B60R 1/12 (2006.01); B60K 35/22 (2024.01); B60K 35/28 (2024.01); B60K 35/29 (2024.01); B60K 35/40 (2024.01); B60K 35/60 (2024.01); B60K 35/81 (2024.01); B60R 1/08 (2006.01); B60R 1/26 (2022.01); G02F 1/133 (2006.01); G02F 1/1347 (2006.01)
CPC B60R 1/12 (2013.01) [B60K 35/22 (2024.01); B60K 35/28 (2024.01); B60K 35/29 (2024.01); B60K 35/415 (2024.01); B60K 35/60 (2024.01); B60K 35/81 (2024.01); B60R 1/088 (2013.01); B60R 1/26 (2022.01); G02F 1/13318 (2013.01); B60K 2360/178 (2024.01); B60K 2360/188 (2024.01); B60K 2360/23 (2024.01); B60K 2360/27 (2024.01); B60K 2360/347 (2024.01); B60K 2360/349 (2024.01); B60K 2360/693 (2024.01); B60K 2360/779 (2024.01); B60R 2001/1253 (2013.01); B60R 2300/8026 (2013.01); G02F 1/1347 (2013.01); G02F 2201/58 (2013.01); G02F 2203/48 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A display system for displaying video of a display object with a reflected image in a superimposed manner, the display system comprising:
a display device including a display and an optical device configured to control reflectance/transmittance of incident light; and
a display control unit configured to display a display object on the display and an optical device control unit configured to change reflectance and transmittance of the optical device, wherein
the display emits image light of the display object,
the optical device is disposed on a first direction side of the display so as to overlap a screen of the display when viewed in the first direction, the first direction being an emission direction of image light of the display, and
the display control unit changes, according to the reflectance and transmittance of the optical device, a display color of the display object on the display so as to reduce a change in color of the display object visually recognized by a user with a change in the reflectance and transmittance of the optical device,
the display device is disposed at an upper part of a front windshield of a vehicle so that image light is emitted toward a rear direction of the vehicle, and
a light detection unit configured to detect intensity of light coming from behind the vehicle, wherein the optical device control unit controls, according to the intensity of the light detected by the light detection unit, the reflectance and transmittance of the optical device so that the reflectance is decreased and the transmittance is increased as the intensity of the light is increased.