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:
Apr. 07, 1998
Filed:
Jan. 31, 1996
Pierre Nicole, Saint Cloud, FR;
Dassault Electronique, Saint Cloud Cedex, FR;
Abstract
A receiver device is intended to detect a beam of electromagnetic entry signals of a known geometry, arriving at a variable entry angle of incidence. It comprises an optical lens, comprising at least one aspherical surface capable of correcting the geometry of an incident beam according to a correction formula chosen in accordance with the entry angle of incidence, for transforming it into an incident beam and applying it to a quadratic detector. This tends to suppress the divergences of the energy received by the detector cording to the angle of incidence, and makes it possible to render substantially constant the signal-to-noise ratio of the detection and the detected signal, irrespective of the entry angle of incidence of the incident entry beam.