US 12,325,302 B2
Light source apparatus, and information display system and head-up display apparatus using the same
Koji Hirata, Kyoto (JP); Toshinori Sugiyama, Kyoto (JP); Koji Fujita, Kyoto (JP); Kouichi Kajiwara, Kyoto (JP); and Eiji Takagi, Kyoto (JP)
Assigned to MAXELL, LTD., Kyoto (JP)
Appl. No. 17/770,295
Filed by Maxell, Ltd., Kyoto (JP)
PCT Filed Oct. 7, 2020, PCT No. PCT/JP2020/038053
§ 371(c)(1), (2) Date Apr. 20, 2022,
PCT Pub. No. WO2021/079741, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2019-191685 (JP), filed on Oct. 21, 2019; and application No. 2020-090189 (JP), filed on May 25, 2020.
Prior Publication US 2022/0388396 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B60K 35/00 (2024.01); B60K 35/23 (2024.01); B60K 35/60 (2024.01); B60K 35/65 (2024.01)
CPC B60K 35/00 (2013.01) [B60K 35/23 (2024.01); B60K 35/60 (2024.01); B60K 35/65 (2024.01); B60K 2360/23 (2024.01); B60K 2360/336 (2024.01); B60K 2360/347 (2024.01); B60K 2360/349 (2024.01); B60K 2360/785 (2024.01)] 13 Claims
OG exemplary drawing
 
1. An information display system that allows an observer to visually recognize an image displayed on an image display apparatus by superimposing the image on an external scenery through a window glass, the information display system comprising:
a light source apparatus configured to supply light having a specific polarization direction at a narrow divergence angle to the image display apparatus,
wherein a reflection position of the image is changed by arranging a position and an angle of the image display apparatus with respect to the window glass so that the position and the angle change in combination while a monitoring angle of the image visually recognized by the observer is constant, and a virtual image display distance of the image visually recognized by the observer and a size of the image of the virtual image can be changed.