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:
Jul. 14, 2026
Filed:
Jan. 18, 2022
Ivtech Jiangsu Co., Ltd., Nantong, CN;
Ivtouch Co., Ltd., Suzhou, CN;
Svg Tech Group Co., Ltd., Suzhou, CN;
Xiaohong Zhou, Nantong, CN;
Ming Zhu, Nantong, CN;
Donglin Pu, Nantong, CN;
Pengfei Zhu, Nantong, CN;
Haoshu Zhu, Nantong, CN;
Rubin Sun, Nantong, CN;
Linsen Chen, Nantong, CN;
IVTECH JIANGSU CO., LTD., Nantong, CN;
IVTOUCH CO., LTD., Suzhou, CN;
SVG TECH GROUP CO., LTD., Suzhou, CN;
Abstract
A projection curtain is provided in the present invention. The projection curtain at least comprises a reflective layer and one of a colored layer, a diffusion layer, and a Fresnel lens layer. The Fresnel lens layer is a spherical Fresnel lens layer or an aspherical Fresnel lens layer. The Fresnel lens layer comprises a plurality of annular protrusions protruding from a plane, the plurality of annular protrusions are arranged in circular bands. A cross-sectional shape of each annular protrusion along a cross section perpendicular to the plane is a triangular shape or a multi-step shape or a free surface shape. The width of one side of each cross-sectional shape parallel to the plane gradually changes, and gradual change of the cross-sectional shape and the width thereof determines light gathering characteristics of the spherical Fresnel lens layer or the aspherical Fresnel lens layer. A surface of each annular protrusion has scattered microstructures. The projection curtain provided in the present invention exhibits higher brightness and larger viewing angle than existing projection curtains.