US 12,282,159 B2
Retinal projection display device and phase profile optimization method thereof
Seokil Moon, Suwon-si (KR); Minseok Chae, Seoul (KR); Changkun Lee, Suwon-si (KR); Dongheon Yoo, Seoul (KR); and Byoungho Lee, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed on Mar. 3, 2023, as Appl. No. 18/117,122.
Claims priority of application No. 10-2022-0072431 (KR), filed on Jun. 14, 2022.
Prior Publication US 2023/0400683 A1, Dec. 14, 2023
Int. Cl. H04N 9/31 (2006.01); G02B 5/32 (2006.01); G02B 27/00 (2006.01); G03B 21/20 (2006.01); G03H 1/26 (2006.01)
CPC G02B 27/0081 (2013.01) [G02B 5/32 (2013.01); G03B 21/2066 (2013.01); G03H 1/2645 (2013.01); H04N 9/312 (2013.01); H04N 9/3155 (2013.01); H04N 9/3173 (2013.01); H04N 9/3179 (2013.01); G03H 2260/12 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A retinal projection display device comprising:
a light source configured to emit light;
a spatial light modulator configured to generate diffracted light by diffracting the light emitted by the light source;
a holographic optical element configured to reflect the diffracted light by duplicating the diffracted light into a plurality of complex wavefronts;
a field lens configured to focus the plurality of complex wavefronts to a plurality of focal points in an eye-box; and
a processor configured to:
determine a loss value between a reconstructed virtual image and a target image, and
based on the loss value, update a phase profile,
wherein the plurality of complex wavefronts are continually arranged to overlap each other.