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. 20, 2016
Filed:
Apr. 20, 2011
David A. Fattal, Mountain View, CA (US);
Peter George Hartwell, Sunnyvale, CA (US);
Andrei Faraon, Menlo Park, CA (US);
Raymond G. Beausoleil, Redmond, WA (US);
David A. Fattal, Mountain View, CA (US);
Peter George Hartwell, Sunnyvale, CA (US);
Andrei Faraon, Menlo Park, CA (US);
Raymond G. Beausoleil, Redmond, WA (US);
Hewlett Packard Enterprise Development LP, Houston, TX (US);
Abstract
Light-detection systems that do not destroy the light to be detected or change the propagation direction of the light are described. In one aspect, a light-detection system includes an optical element composed of a substrate with a planar surface and a polarization insensitive, high contrast, sub-wavelength grating composed of posts that extend from the planar surface. The posts and/or lattice arrangement of the posts are non-periodically varied to impart orbital angular momentum and at least one helical wavefront on the light transmitted through the optical element.