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. 04, 2022
Filed:
Nov. 20, 2018
Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno, s-Gravenhage, NL;
Rudolf Saathof, Nieuwegein, NL;
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage, NL;
Abstract
A wavefront detector () and method for determining a signal wavefront (Ws) of a signal beam (Ls). A beam combiner () is configured to combine the signal beam (Ls) with a reference beam (Lr). An image detector () comprising an array of photosensitive pixels () is configured to receive and measure an interference pattern (Wrs) of the combined signal and reference beams (Lr+Ls). A reference light source () is configured to generate the reference beam (Lr). A feedback controller () is configured to receive an interference signal (I) based on measurement of at least part of the combined signal and reference beams (Lr+Ls), and control generation of the reference beam (Lr) by a feedback loop based on the interference signal (I).