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:
Jun. 24, 2025
Filed:
Nov. 08, 2019
Kyungpook National University Industry-academic Cooperation Foundation, Daegu, KR;
Hak-Rin Kim, Daegu, KR;
Min-Kyu Park, Daegu, KR;
Abstract
Disclosed is a polarization-dependent light steering device based wide projection display system which can extend the screen projection region of an image at low cost without lowering of resolution. A wide projection display system according to an embodiment of the present invention comprises: a projector for sequentially outputting, in a time division scheme, images to be projected to different regions on a screen; and a light steering device installed behind the projector to differently control the output directions of the images according to the polarization directions of the images. The light steering device comprises a plurality of Fresnel prism arrays having polarization dependence. The plurality of Fresnel prism arrays are stacked along the projection direction of images output from the projector.