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. 16, 2021
Filed:
Mar. 13, 2018
Commissariat À L'énergie Atomique ET Aux Énergies Alternatives, Paris, FR;
Laurent Frey, Fontaine, FR;
Abstract
An interference filter, including a first interface layer; a first dielectric portion of a first dielectric material, having a first thickness and resting on the first interface layer at a first location; a second dielectric portion of the first dielectric material, the second dielectric portion resting on the first interface layer at a second location, the second dielectric portion having a second thickness greater than the first thickness; a third dielectric portion of a second dielectric material having a refraction index smaller than the refraction index of the first material, the third dielectric portion having a third thickness and resting on the first dielectric portion, the sum of the first thickness and of the third thickness being equal to the second thickness; and a second interface layer resting on the second and third dielectric portions.