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:
Feb. 27, 2024
Filed:
Jan. 18, 2019
Zhejiang University, Zhejiang, CN;
Weidong Shen, Zhejiang, CN;
Huaxin Yuan, Zhejiang, CN;
Chenying Yang, Zhejiang, CN;
Xiaowen Zheng, Zhejiang, CN;
Wen Mu, Zhejiang, CN;
Zhen Wang, Zhejiang, CN;
Wenjia Yuan, Zhejiang, CN;
Yueguang Zhang, Zhejiang, CN;
ZHEJIANG UNIVERSITY, Zhejiang, CN;
Abstract
This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.