Eyesense Gmbh

Cis Forschungsinstitut Fuer Mikrosensorik Gmbh

Sartorius Lab Instruments Gmbh & Co., Kg

Cis Forschungsinstitut Fur Mikrosensorik Gmbh

Cis Forschungsinstitut Für Mikrosensorik Und Photovoltaik Gmbh

Opto-mst Sensoren Und Systeme Gmbh

Hans-Georg Ortlepp

Hans-Joachim Freitag

Andreas Schmidt

Ralf Mueller

Olaf Brodersen

Ralf Muller

Ralf Müller

Uwe Buschmann

Dennis Mitrenga

An arrangement for examining a sample which can be excited by means of electromagnetic radiation comprises a first dichroitic beam splitter having a first and a second prism, which are connected to one another on the base surfaces thereof, and a dichroitic layer arranged between the base surfaces of the two prisms, wherein an entry surface of the first prism encloses an angle (&#x3b2;) in the range from 10&#xb0; to &#x3c;40&#xb0; with the dichroitic layer. Furthermore a light source provides the electromagnetic radiation suitable for excitation of the sample, the radiation coupled into the entry surface of the first prism, wherein a part of the radiation is reflected on the dichroitic layer in the direction of the sample, which is positioned downstream of an exit surface of the first prism. Finally, a detector detects electromagnetic radiation emitted by the sample, passed through the beam splitter and leaving the latter on a measurement surface. The invention further relates to a dichroitic beam splitter, for use in said arrangement.

Beam splitter and arrangement for examining a sample which can be excited by means of electromagnetic radiation

The invention relates to a method and a device for ascertaining a time-dependent blood pressure curve. Time- and volume-dependent blood flow values are detected in a noninvasive manner in a tissue section with a good blood flow as photoplethysmography values P(t) using a photoplethysmography sensor. A data processing unit transforms the photoplethysmography values P(t) into blood pressure values B(t) by carrying out a transformation rule. An output and storage unit at least temporarily stores the transformed blood pressure values B(t) as time-dependent blood pressure values and transfers said values to an external or internal display and/or storage unit arranged downstream.

Method and device for ascertaining a blood pressure curve

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Apfelstaedt, Germany

Hans-Georg Ortlepp