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:
Sep. 11, 2018
Filed:
Mar. 06, 2015
Applicant:
Société Française DE Détecteurs Infrarouges—sofradir, Palaiseau, FR;
Inventor:
Patrick Maillart, La Murette, FR;
Assignee:
SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES-SOFRADIR, Palaiseau, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 40/14 (2006.01); G01J 1/46 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01);
U.S. Cl.
CPC ...
G01J 1/46 (2013.01); H02J 7/0021 (2013.01); H02J 7/345 (2013.01);
Abstract
The circuit of detection of light radiation includes a photodetector. The photodetector is coupled to three capacitors by means of three switches. The capacitors are parallel mounted to form a capacitive load whose value of electrical capacity changes as a function of the openings/closures of the switches. This configuration allows to stabilize the voltage present on the output terminal in the detection circuit for a wider range of illumination sustained by photodetector.