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. 20, 2012
Filed:
Oct. 31, 2008
Applicants:
Jaime Antonio LI, Martinsville, VA (US);
Coby Lee Hubbard, Bassett, VA (US);
Inventors:
Jaime Antonio Li, Martinsville, VA (US);
Coby Lee Hubbard, Bassett, VA (US);
Assignee:
CPFilms Inc., Fieldale, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Now, according to the present invention, interference filters are provided that incorporate two band pass interference filters into a single composite interference filter. The two filters each have at least one band pass curve that is centered at the same wavelength for light that is incident at a given angle to the filter surface. The band pass curve shifts of the filter components, however, are dissimilar, which results in a decrease of transmitted light as the angle of incidence diverges from the given angle.