Kyungpook National University Industry-academic Cooperation Foundation

Electronics and Telecommunications Research Institute

Tae-Hyun Lee

Hak-Rin Kim

Min-Kyu Park

Kee Hoon Hong

Joong Ki Park

Kyung-Il Joo

Ki Hong Choi

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.

Holographic camera system

An active random refraction device includes a random structure having the same refractive index characteristics regardless of polarization direction of light, a liquid crystal polymer on the random structure with refractive index characteristics changing according to polarization direction of the light, a polarization switching device, and a refractive surface with an inclination angle randomly distributed along the horizontal direction perpendicular to the incident direction of the light. The active random refraction device can be switched between a transmission mode and a refractive mode according to the polarization of the light.

Field of view and coherence active control random refraction device and manufacturing method therefor

A light field imaging system includes a lens configured to collect light transmitted from an object; a polarizer configured to polarize the light; a polarization switching unit configured to repeatedly switch the polarization direction of the light in first and second polarization directions; first and second polarization dependent lens arrays configured to operate as a lens when the polarization direction of the light is the first and second polarization direction, respectively, and having a staggered arrangement; an image sensor configured to obtain a first image from the light collected by the first polarization dependent lens array and obtain a second image from the light collected by the second polarization dependent lens array; and an image processing unit configured to combine the first image and the second image to generate a high resolution image having higher resolution than the first image and the second image.

Light field imaging system

Growing community of inventors

Daegu, South Korea

Tae-Hyun Lee