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. 29, 2006
Filed:
Mar. 05, 2003
Applicants:
Premjeet Chahal, Plano, TX (US);
Francis J. Morris, Dallas, TX (US);
Inventors:
Premjeet Chahal, Plano, TX (US);
Francis J. Morris, Dallas, TX (US);
Assignee:
Raytheon Company, Wsltham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polarizing filter includes a portion with a filtering layer having a plurality of openings extending therethrough, where this portion has a maximum physical thickness in a radiation travel direction which is less than approximately one wavelength of the radiation being filtered. A method of making the filter includes: forming a filtering layer over a substrate; creating a plurality of openings through a portion of the filtering layer; and separating the filtering layer from the substrate.