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. 20, 2020
Filed:
Jun. 04, 2015
Robert Magnusson, Arlington, TX (US);
Robert Magnusson, Arlington, TX (US);
Other;
Abstract
Disclosed is a new class of wideband reflectors that are relatively insensitive to deviations from the design parameters. The reflectors are materially sparse while providing high reflectance across wide spectral bands. In some embodiments, a device comprises a substrate and a grating layer disposed on the substrate, wherein the grating layer comprises a periodic grating structure and a sublayer beneath the grating structure and adjacent to the substrate, the grating layer and the sublayer having the same index of refraction. These compact, low-loss elements complement conventional thin-film reflectors while possessing properties not available in thin-film multilayer stacks. The reflectors are based on a fundamental resonance effect, the guided-mode resonance effect, that occurs in periodic structures. Disclosed herein are both one-dimensional and two-dimensional reflectors m zero-contrast embodiments. The disclosed reflectors can be used in various electromagnetic spectral regions for various useful applications.