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:
Feb. 18, 1986
Filed:
Sep. 07, 1982
Norman C Ford, Jr, Amherst, MA (US);
Coulter Electronics of New England, Inc., Hialeah, FL (US);
Abstract
A light scattering interfacial tension spectrometer has a laser source of light directed, as an incident beam I.sub.i, through a focusing lens and a diffraction grating. The grating divides the incident beam I.sub.i into a main beam I.sub.m, undiffracted light, and a higher order, diffracted light, reference beam I.sub.r. The beam I.sub.r is passed through an attenuator and a diffraction focusing lens to a region under test, such as a liquid surface. The main beam I.sub.m, from the grating is transmitted through the common diffraction focusing lens to the test region where it is reflected. The reference beam I.sub.r is reflected from the test surface together with scattered light I.sub.s, and directed through an aperture to a photomultipler tube. The output of the photomultiplier is coupled to a pulse amplifier-discriminator and a photon correlator. For a liquid surface under test the output of the spectrometer provides a measure of the surface tension and the viscosity of the liquid.