The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2023
Filed:
Mar. 11, 2022
Applicant:
Kyungpook National University Industry-academic Cooperation Foundation, Daegu, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); G02F 1/1334 (2006.01); G02F 1/1335 (2006.01); G02F 1/1347 (2006.01); G02F 1/01 (2006.01); G02F 1/1343 (2006.01); G02F 1/139 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13476 (2013.01); G02F 1/0136 (2013.01); G02F 1/1396 (2013.01); G02F 1/133362 (2013.01); G02F 1/133365 (2013.01); G02F 1/133504 (2013.01); G02F 1/134309 (2013.01); G02F 2203/07 (2013.01);
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.