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. 20, 2016
Filed:
May. 09, 2013
Université DE Genève, Genève, CH;
UNIVERSITE DE GENEVE, Geneva, CH;
Abstract
A measurement device and method for the detection of airborne particles. The device includes a nozzle designed to produce a laminar flow of air with a flow path beyond the nozzle, a first laser and a second laser being positioned for emitting time-amplitude modulated laser light with intersecting laser beams with a laser beam intersection region in a region of the air flow path, and two photodetectors positioned for the detection of laser light scattered in the laser beam intersection region by airborne particles contained in the laminar air flow. The lasers are designed for emission of time-amplitude modulated laser light of identical laser emission wavelength, and the photodetectors are positioned and designed each for the detection of scattered laser light from both lasers.