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:
Mar. 15, 2016
Filed:
Dec. 02, 2011
Hideo Iizuka, Ann Arbor, MI (US);
Nader Engheta, Berwyn, PA (US);
Hideo Iizuka, Ann Arbor, MI (US);
Nader Engheta, Berwyn, PA (US);
Toyota Motor Engineering & Manufacturing North America, Inc., Erlanger, KY (US);
The Trustess of the University of Pennsylvania, Philadelphia, PA (US);
Abstract
A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction angles of the grating dividers are more than about 43.6°. Lateral shift may be achieved by various devices including MEMS and metal couplers having a known/calibrated thermal coefficient of expansion over a temperature range of interest.