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:
Jun. 03, 2025
Filed:
Sep. 09, 2021
Commissariat À L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Jérôme Le Perchec, Grenoble, FR;
Abstract
A device having a transmission response with a maximum at a wavelength λ, this device including an intermediate layer which extends from a first optical filter to a second optical filter, this intermediate layer having a refractive index nat the wavelength λand a thickness h, the refractive index nbeing less than 3n/5 and the thickness hbeing between δ and 3δ, where the refractive index nis greater than 5n/3, where nis the greatest of the refractive indices chosen from the group consisting of the refractive indices at the wavelength λof the media situated at the interface with the first filter, and the coefficient δ is defined by the following relationship:1/δ=(2π/λ)((λ/())−1),where P is the period of a grating of slits of the first filter.