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:
Nov. 13, 2001
Filed:
Dec. 17, 1999
Li Ll, Orleans, CA;
Zhengda Pang, Gloucester, CA;
National Research Council of Canada, Ottawa, CA;
Abstract
A thin film polarizing device has a functional core consisting of at least two alternating thin film layers of metal and dielectric sandwiched between a pair of optical media providing input and output ports. The thicknesses of said layers and the optical constants of said layers and said optical media are selected such that the equivalent admittance of said functional core substantially matches the admittance of said optical media for one plane of polarization, thus allow light with said polarization to be transmitted, and has substantially only an imaginary part for the other plane of polarization, thus allows light with the other polarization to be reflected, at predetermined wavelengths and angles of incidence.