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:
Oct. 22, 2002
Filed:
Mar. 16, 1998
Gert Ludwig Duveneck, Bad Krozingen, DE;
Karlheinz Gulden, Zürich, CH;
Rino Ernst Kunz, Steinmaur, CH;
Jürgen Söchtig, Opfikon, CH;
Zeptosens AG, Witerswil, CH;
Abstract
The invention relates to an optical detection device for chemical analyses, comprising at least one light source, at least one photoelectric detection unit and at least one measuring cell, one or more optical paths coupled to the at least one measuring cell being formed between the light source(s) and the photoelectric detection unit(s). In the course of the miniaturization of such detection devices in arrays for the simultaneous detection of a plurality of analytes, according to the prior art edge-emitting semiconductor lasers that had been separated and applied to a substrate were used. Instead of the latter, the invention provides for surface-emitting semiconductor lasers to be used as light sources, which have the advantage of comparatively simple manufacture and of requiring substantially less space. The process of separating the lasers from the mother substrate and affixing them to a foreign substrate, which was necessary hitherto, is eliminated in the detection device according to the invention.