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US 12,468,256 B2Granted
Holographic camera system
AssigneesKyungpook National University Industry-Academic Cooperation Foundation, Electronics and Telecommunications Research Institute
InventorsHak-Rin Kim, Tae-Hyun Lee, Ki Hong Choi, Kee Hoon Hong, Joong Ki Park
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Abstract
A holographic camera system includes an imaging lens, a polarizer configured to circularly polarize light incident from the imaging lens, a geometric phase lens with a phase delay of λ/4, and an image sensor configured to replicate an interference pattern through self-interference of light output from the geometric phase.
Claims8
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.
2 more elements
Dependencies are inferred from the claim text.