US 12,242,058 B2
Image display device and augmented reality device including the same
Bongsu Shin, Seoul (KR); Geeyoung Sung, Daegu (KR); Sunil Kim, Seoul (KR); Seokil Moon, Suwon-si (KR); Wontaek Seo, Yongin-si (KR); Daeho Yang, Suwon-si (KR); Changkun Lee, Seoul (KR); and Hongseok Lee, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Mar. 2, 2021, as Appl. No. 17/190,080.
Claims priority of application No. 10-2020-0119323 (KR), filed on Sep. 16, 2020.
Prior Publication US 2022/0082832 A1, Mar. 17, 2022
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 2027/0105 (2013.01); G02B 2027/0174 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An image display device comprising:
a main light source configured to emit a first light;
a display panel configured to modulate the first light to add image information to the first light;
a holographic optical element (HOE) configured to diffract the first light emitted from the display panel to make the first light travel to a first region to generate a main image;
a first optical system provided on a traveling path of the first light between the main light source and the HOE, the first optical system being configured to change the traveling path of the first light to be incident on the HOE along a first path;
an auxiliary light source configured to emit a second light; and
a second optical system provided on a traveling path of the second light, the second optical system being configured to change the traveling path of the second light to be incident on the HOE along a second path different from the first path,
wherein the HOE is further configured to diffract the second light incident through the second path to make the second light travel toward a second region surrounding the first region to generate a guide image surrounding the main image,
wherein the second optical system is provided on the traveling path of the second light between the auxiliary light source and the display panel to direct the second light to the display panel, and
wherein the display panel is further configured to change and direct the traveling path of the second light emitted from the auxiliary light source and passing through the second optical system to the HOE along the second path.