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. 19, 2013
Filed:
Jul. 17, 2007
Pierre Gidon, Echirolles, FR;
Gilles Grand, Grenoble, FR;
Pierre Gidon, Echirolles, FR;
Gilles Grand, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
The invention relates to an optical filtering structure consisting of a set of at least two elementary optical filters (R, V, B), an elementary optical filter being centered on an optimum transmission frequency, characterized in that it comprises a stack of n metal layers (m, m, m) and n substantially transparent layers (d, d, d) which alternate between a first metal layer (m) and an nsubstantially transparent layer (d), the n metal layers (m, m, m) each having a constant thickness and at least one substantially transparent layer having a variable thickness which sets the optimum transmission frequency of an elementary optical filter, n being an integer larger than or equal to 2. Application to miniature image sensors.