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:
Nov. 26, 2002
Filed:
Nov. 27, 2000
Bernd Spangenberg, D-77654 Offenburg, DE;
Karl-Friedrich Klein, D-61169 Friedberg, DE;
Other;
Abstract
The invention relates to a thin-layer chromatography apparatus ( ) having a plurality of optical light guides to inject light from a light source ( ) onto a thin-layer plate ( ) and to feed light from the thin-layer plate to an optical examining device ( ). To obtain a robust, compact thin-layer chromatography apparatus having a high spectral and spatial resolution, with which there are only minimal disturbances, if any, caused by ambient light and which is nonetheless economical to produce, the invention provides for the emitted-light guides ( ) and or received-light guides ( ) to be positioned in a regular geometrical pattern in relation to each other either towards or away from the plate, as represented by the rows ( and ). The light spots emitted by the emitted-light guides and the field of vision of the received-light guide overlap in an adjustable manner (linear movements , pivoting movements ), as regards spatial resolution and light yield. A thin-layer plate ( ) which is oriented in a planar manner by reference measurement and has a chromatography path ( ) is displaced by a control unit ( ) in relation to the light guides ( ) which are at a distance of a few 100 &mgr;m and is examined ( ) and evaluated ( ) by spectroscopy for fluorescence, reflectance and/or absorption.