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:
May. 07, 2002
Filed:
Dec. 22, 2000
Gerolf Kraus, Bad Bellingen-Bamlach, DE;
Michael Pawlak, Laufenburg, DE;
Gert Ludwig Duveneck, Bad Krozingen, DE;
Peter Oroszlan, Basel, CH;
Andreas Helg, Möhlin, CH;
Alfredo Emilio Bruno-Raimondi, Biel-Benken, CH;
Novartis AG, Basel, CH;
Abstract
A device has a planar optical waveguide, including a transparent carrier ( ) and a wave-guiding layer ( ), wherein the waveguide at least has a diffractive element ( ) for coupling excitation radiation into the wave-guiding layer. Located on the wave-guiding layer is a further, tightly sealing layer ( ) made from a material which, at least at the support surface, is transparent both to the excitation radiation and to the evanescently excited radiation at least to the penetration depth of the evanescent field, and which, for an analysis sample, has, at least in a partial region of the guided excitation radiation, a cavity ( ) which is open to the upper side or a cavity ( ) which is closed to the upper side and connected by means of an inlet channel ( ) and an outlet channel ( ). The depth of the cavity corresponds at least to the penetration depth of the evanescent field, and the diffractive element ( ) is fully covered by the material of the layer ( ) at least in the coupling-in region of the excitation radiation.