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:
Jul. 08, 2025
Filed:
May. 10, 2021
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Abstract
A detection device for a coherent lidar imaging system includes an integrated detector comprising a matrix array of pixels distributed over N columns and M rows and comprising an optical guide, called reference guide, configured so as to receive a laser beam, called reference beam, N optical guides, called column guides, coupled to the reference guide, each column guide being coupled to M optical guides, called row guides, the M row guides being configured so as to route part of the reference beam into each pixel of the column, called pixel reference beam, each pixel of the integrated detector comprising: a guided photodiode coupled to an optical detection guide, a diffraction grating, called pixel grating, configured so as to couple a portion of a beam illuminating the pixel into the guided photodiode, a coupler, called pixel coupler, configured so as to couple the pixel coupled beam and at least a fraction of the pixel reference beam into the detection guide, an electronic readout and preprocessing circuit.