US 12,078,809 B2
Augmented reality display device
Myongjo Choi, Suwon-si (KR); and Youngmo Jeong, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jan. 17, 2023, as Appl. No. 18/097,861.
Application 18/097,861 is a continuation of application No. PCT/KR2021/008733, filed on Jul. 8, 2021.
Claims priority of application No. 10-2020-0089160 (KR), filed on Jul. 17, 2020.
Prior Publication US 2023/0152591 A1, May 18, 2023
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 27/09 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/003 (2013.01); G02B 27/0977 (2013.01); G06F 3/011 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An augmented reality (AR) display device comprising:
a display engine configured to project light of an image;
a waveguide configured to receive and output light projected from the display engine; and
a body on which the display engine and the waveguide are installed,
wherein the display engine comprises a light source unit, a reflective display panel, and a projection optical system,
the projection optical system comprises an iris and a first projection lens group arranged between the iris and the reflective display panel,
the light source unit comprises at least one of a light source and a light exit end, positioned near the iris in a position deviating from an optical axis of the projection optical system such that an incident angle range of light incident to the reflective display panel does not overlap with a reflection angle range of light reflected from the reflective display panel, and
the iris comprises an effective opening through which light reflected from the reflective display panel passes.