Abstract: 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.
Type:
Grant
Filed:
March 11, 2022
Date of Patent:
August 22, 2023
Assignee:
Kungpook National University Industry-Academic Cooperation Foundation
Inventors:
Hak-Rin Kim, Kyung-Il Joo, Tae-Hyun Lee, Min-Kyu Park