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. 23, 2021
Filed:
Feb. 22, 2017
Kent State University, Kent, OH (US);
Intel Corporation, Santa Clara, CA (US);
Hsien-Hui Cheng, San Jose, CA (US);
Philip Bos, Hudson, OH (US);
Achintya Bhowmik, Cupertino, CA (US);
Kent State University, Kent, OH (US);
Abstract
An optical beam deflection device includes a dual-twist Pancharatnam phase device (DTPPD) with first and second Pancharatnam layers each with an in-plane twist and a transverse twist that is at least 60° over the thickness of each Pancharatnam layer, and more preferably at least 75°, and still more preferably at least 90°, with the twist sense of the second Pancharatnam layer being opposite the twist sense of the first Pancharatnam layer. To provide switchable beam deflection, an electro-optic polarization element inputs a circularly polarized light beam to the DTPPD with left-handed circular polarization or right-handed circular polarization controlled by an electrical input.