US 12,092,994 B2
Complex light modulator, holographic display apparatus, and method of generating hologram pattern
Yunhee Kim, Seoul (KR); Hwi Kim, Sejong-si (KR); Jonghyun Lee, Sejong-si (KR); and Hoon Song, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and Korea University Research and Business Foundation, Sejong Campus, Sejong-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and Korea University Research and Business Foundation, Sejong Campus, Sejong-si (KR)
Filed on Jan. 13, 2022, as Appl. No. 17/574,811.
Claims priority of application No. 10-2021-0036076 (KR), filed on Mar. 19, 2021.
Prior Publication US 2022/0299937 A1, Sep. 22, 2022
Int. Cl. G03H 1/08 (2006.01); G03H 1/00 (2006.01); G03H 1/02 (2006.01); G03H 1/22 (2006.01); G03H 1/26 (2006.01)
CPC G03H 1/0005 (2013.01) [G03H 1/02 (2013.01); G03H 1/2205 (2013.01); G03H 2001/0088 (2013.01); G03H 2001/0224 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A complex light modulator comprising:
a phase modulator; and
an amplitude modulator,
wherein the phase modulator and the amplitude modulator are configured to generate a first complex pixel having first complex light modulation characteristics and a second complex pixel having second complex light modulation characteristics,
wherein the first complex pixel includes first sub-complex pixels that are provided in a 3×3 format and are configured to implement the first complex light modulation characteristics,
wherein the second complex pixel includes second sub-complex pixels that are provided in a 3×3 format and are configured to implement the second complex light modulation characteristics,
wherein the first complex pixel and the second complex pixel respectively include at least two first overlapping pixels that are included in the first sub-complex pixels and the second sub-complex pixels, and
wherein among the sub-complex pixels provided in the 3×3 format, which include the at least two first overlapping pixels, phases of sub-complex pixels respectively provided at positions (1,1), (1,3), (2,2), (3,1), and (3,3) are 0°, phases of sub-complex pixels respectively located at positions (1,2) and (3,2) are 120°, and phases of sub-complex pixels respectively located at positions (2,1) and (2,3) are 240°, where a sub-complex pixel at a position (m,n) is provided at an mth row and nth column of the 3×3 format.