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:
Jan. 13, 2015
Filed:
Apr. 25, 2011
Salim Boutami, Grenoble, FR;
Yohan Desieres, Lans en Vercors, FR;
Laurent Frey, Fontaine, FR;
Gilles Grand, Grenoble, FR;
Salim Boutami, Grenoble, FR;
Yohan Desieres, Lans en Vercors, FR;
Laurent Frey, Fontaine, FR;
Gilles Grand, Grenoble, FR;
Abstract
An optical filter for filtering an electromagnetic radiation of variable angle of incidence, includes a stack of at least one dielectric or semi-conductor layer arranged between two partially reflective layers, said stack defining a set of Fabry-Pérot cavities set to a predetermined wavelength. The average refractive index of the dielectric or semi-conductor layer is variable in a plane orthogonal to the direction of the stack so as to compensate the effects of the variation in the angle of incidence of the electromagnetic radiation on the transmission spectrum of the cavities.