Method and device for suppressing multiple scattering when examining turbid media by means of three-dimensional cross-correlation technique

US6873412B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Lisa Birgit Aberle · Bremen, DE
• Wilfried Straude · Bremen, DE
• Malte Kleemeier · Bremen, DE
• Jürgen Loschen · Oldenburg, DE

Key dates

• Filing date: Nov 21, 2002
• Grant date: Mar 29, 2005
• Expiry date: Nov 21, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2015/145
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a portable device for carrying out examinations of turbid media using a three-dimensional cross-correlation technique and for suppressing the influence of multiple scattering, as well as to an adjustment method for adjusting the device. The device has a base plate (1) upon which an adjustable laser (2) is positioned in tilting devices or by means of mirrors for directing the laser beam perpendicularly onto the wall of a cuvette (6) filled with a medium to be examined. The device is provided with a translucent plate (7) which in some sections is completely mirror-coated and in other sections is partially mirror-coated and which serves as a beam splitter (4). The plate is firmly secured to the base plate (1) using a positioning fixture (8) whose support surface (16) for the translucent plate (7) is situated at a fixed angle with respect to the base plate (1). The positioning fixture (8) is detachably secured to the base plate (1) and to a cuvette fixture having receptacles for the cuvette (6) and for a cylindrical translucent container (70) filled with a liquid which is situated on the base plate (1). Displacement devices for the cuvette fixture (5) which all…