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:
Sep. 15, 2026
Filed:
Jun. 09, 2023
Applicant:
William H Southwell, Thousand Oaks, CA (US);
Inventor:
William H Southwell, Thousand Oaks, CA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/22 (2006.01); G02B 5/28 (2006.01);
U.S. Cl.
CPC ...
G02B 5/285 (2013.01); G02B 5/22 (2013.01);
Abstract
This invention consists of two new types of narrowband optical interference filters that expand the current state-of-the-art narrowband filtering. Prior narrowband filters have a high transmission for a narrow wavelength band and reflect light from surrounding wavelengths. The filters of this invention allow for narrowband absorption and narrowband reflection. These new filters include a thin absorbing layer with the standard dielectric layers.