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:
Oct. 27, 2020
Filed:
Feb. 12, 2018
Kyungpook National University Industry-academic Cooperation Foundation, Daegu, KR;
Hak-Rin Kim, Daegu, KR;
Min-Kyu Park, Daegu, KR;
Abstract
An active prism structure includes: an isotropic layer made of a photocurable isotropic polymer having a predetermined refractive index nand stacked on a substrate; and a birefringent layer made of a birefringent material having an ordinary refractive index nand an extraordinary refractive index nand stacked on the isotropic layer, an interface between the isotropic layer and the birefringent layer is formed in a prism shape, and refractive index differences occurring at the interface between the isotropic layer and the birefringent layer are different according to a polarization direction of incident light. The active prism structure is configured such that the refractive index differences are different according to the polarization direction of the incident light, and thus, it is possible to change a refraction angle and refraction direction of the prism by controlling the polarization direction of the incident light.