US 12,189,336 B2
CGH generator and display apparatus including the same
Daeho Yang, Suwon-si (KR); Hongseok Lee, Seoul (KR); Wontaek Seo, Yongin-si (KR); Jungkwuen An, Yongin-si (KR); and Jong-Young Hong, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 1, 2021, as Appl. No. 17/516,142.
Claims priority of application No. 10-2021-0058123 (KR), filed on May 4, 2021.
Prior Publication US 2022/0357703 A1, Nov. 10, 2022
Int. Cl. G03H 1/08 (2006.01); G02B 27/01 (2006.01); G03H 1/22 (2006.01)
CPC G03H 1/0866 (2013.01) [G02B 27/0172 (2013.01); G03H 1/2294 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01); G03H 2222/12 (2013.01); G03H 2225/34 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A holographic display apparatus comprising:
a light source;
a spatial light modulator configured to modulate light from the light source according to an image to be displayed on an object plane; and
a processor configured to generate a computer generated hologram (CGH) in which a phase value of hologram data to be displayed on a reference plane of the spatial light modulator is 0, the processor being configured to apply a light modulation signal based on the CGH to the spatial light modulator,
wherein the processor is further configured to repeatedly change a phase value of hologram image data of a hologram image to be displayed on the object plane and search for a value via which the phase of the hologram data on the reference plane of the spatial light modulator becomes 0.