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. 18, 2014
Filed:
Oct. 20, 2009
Applicant:
Gilles Grand, Grenoble, FR;
Inventor:
Gilles Grand, Grenoble, FR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to an optical filter structure composed of at least two adjacent elementary optical filters, an elementary optical filter being centred on an optimum transmission frequency, characterised in that it comprises a stack of n metallic layers (m-m) and n−1 dielectric layers (d-d), each metallic layer alternating with a dielectric layer such that the central layer in the stack is a metallic layer (m), each of the layers in the stack having a constant thickness except for the central metallic layer for which the varying thickness fixes the optimum transmission frequency of an elementary filter.