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:
Aug. 06, 2024
Filed:
Sep. 23, 2022
Ii-vi Delaware, Inc., Wilmington, DE (US);
Christoph M. Greiner, Eugene, OR (US);
Jianji Yang, Eugene, OR (US);
Dmitri Iazikov, Eugene, OR (US);
II-VI DELAWARE, INC., Wilmington, DE (US);
Abstract
An optical element includes a substrate, an intermediate layer, a topmost layer, and a contiguous multitude of recessed and non-recessed areal regions. The intermediate layer is formed over a top surface of the substrate and has a refractive index n. The topmost layer is formed directly on the intermediate layer and has a refractive index nwhere n≠n. The intermediate and topmost layers are substantially transparent over an operational wavelength range that includes a design wavelength λ. A subset of areal regions has a largest transverse dimension less than about λ. Each non-recessed areal region includes corresponding portions of the intermediate and topmost layers. Each recessed areal region extends entirely through the topmost layer and at least partly through the intermediate layer. A fill medium fills the recessed areal regions. The areal regions are variously sized and distributed transversely across the optical element.