Portable Device for Detecting Explosive Substances Comprising a Device for Generating and Measuring the Emission of an Indicator

摘要

A portable appliance for detecting explosive materials has an apparatus for generating and measuring emission of an indicator. The indicator has a carrier and a plurality of indicator substances that can be impinged upon by analytes, said indicator substances being applied onto the carrier as a thin layer and being positionable in an indicator area by means of a holding apparatus. The indicator substances are arranged in different regions of the carrier such that the indicator substances in the indicator area represent a pattern of indicator substances depending on the location. The apparatus has a plurality of radiation sources for emitting quasi-monochromatic excitation radiation. The radiation sources are arranged at various locations in a radiation area such that the radiation area represents a pattern of radiation sources depending on the location. The apparatus has an excitation beam path with at least one first imaging system for imaging excitation radiation into the indicator area such that emission of the indicator substances is producible at the locations at which the excitation radiation is imaged on the indicator area. An emission beam path has at least one second imaging system for imaging the indicator area into a reception area such that a pattern of emissions is producible in the reception area depending on the location. A plurality of receivers receive emissions from the reception area and for converting the received emissions into electrical signals.