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:
Oct. 19, 2021
Filed:
Nov. 25, 2019
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Giacomo Badano, Grenoble, FR;
Clément Lobre, Grenoble, FR;
Abstract
A photodetection device including a pixel matrix, each of the pixels including a photodiode, the absorption region of which extends entirely or almost entirely inside a volume surrounding a central region of the pixel; and a focusing element. An assembly of focusing elements is composed of refractive structures, each formed by a first truncated pyramid with a recess in the shape of a second inverted pyramid. The angles φat the base of the pyramids satisfy the following relation: wherein nis the optical index of a medium surrounding the refractive structures on the side opposite the photodiodes, and nis an optical index of the refractive structures.