US 12,468,256 B2
Holographic camera system
Hak-Rin Kim, Daegu (KR); Tae-Hyun Lee, Daegu (KR); Ki Hong Choi, Daejeon (KR); Kee Hoon Hong, Daejeon (KR); and Joong Ki Park, Daejeon (KR)
Assigned to Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR); and Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR); and ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Mar. 4, 2022, as Appl. No. 17/686,917.
Claims priority of application No. 10-2021-0029454 (KR), filed on Mar. 5, 2021.
Prior Publication US 2022/0283541 A1, Sep. 8, 2022
Int. Cl. G02B 5/30 (2006.01); G02B 27/28 (2006.01); G03H 1/04 (2006.01)
CPC G03H 1/0443 (2013.01) [G02B 5/3083 (2013.01); G02B 27/286 (2013.01); G03H 2001/0447 (2013.01); G03H 2001/0452 (2013.01); G03H 2222/31 (2013.01); G03H 2222/45 (2013.01); G03H 2223/22 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A holographic camera system comprising:
an imaging lens;
a polarizer configured to modulate light incident from the imaging lens into circularly polarized light, wherein the polarizer comprises a linear polarization polarizing plate and an achromatic phase delay polarizing plate of λ/4;
a geometric phase lens with a phase delay of λ/4, the geometric phase lens being configured to divide the circularly polarized light into a combination of a collimating beam and one of a focusing beam or a diverging beam, wherein the selection of the focusing or diverging beam is dependent on a polarization state of the incident circularly polarized light, and wherein the geometric phase lens is configured to divide the circularly polarized light substantially independently of wavelength; and
an image sensor configured to replicate an interference pattern through self-interference of light output from the geometric phase lens.