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:
Dec. 31, 2024
Filed:
Nov. 02, 2021
Xin Yang Sunny Optics Co., Ltd., Henan, CN;
Ce Chen, Henan, CN;
Weihong Ding, Henan, CN;
Yeqing Fang, Henan, CN;
Wei Yang, Henan, CN;
Niangong Xiao, Henan, CN;
Xin Yang Sunny Optics Co., Ltd., Henan, CN;
Abstract
An optical filter that includes a substrate and a first set of films disposed on a first surface of the substrate, wherein the first set of films includes a high refractive index film layer, a low refractive index film layer, and a matching film layer. A material of the matching film layer includes a nitrogen-doped silicon germanium mixture having a chemical formula SiGeN, where 0≤x≤1, and 0<y≤0.1. In a wavelength range of 780 nm to 3000 nm, a refractive index of the high refractive index film layer is greater than a refractive index of the low refractive index film layer, and a refractive index of the matching film layer is not equal to a refractive index of its adjacent film layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile