| 摘要 |
Test element analysis system for the analytical investigation of a sample, in particular of a body liquid of human beings or animals, comprising test elements ( 2 ) with a carrier film ( 5 ) and a test field ( 7 ) fixed to the flat side ( 6 ) of the carrier film ( 5 ), the test field ( 7 ) containing a reagent system the reaction of which with the sample ( 21 ) leads to an optically measurable change in the detection zone ( 24 ) which is characteristic for the analysis, and an evaluation instrument with a measuring device for measuring the optically measurable change. In order to obtain a very high measuring accuracy and an easy handling at the same time, the carrier film ( 5 ) of the test element ( 2 ) comprises a light guide layer ( 26 ), the detection zone ( 24 ) of the test field ( 7 ) is in optical contact to the light guide layer ( 26 ) in a coupling out zone ( 33 ), enabling the coupling out of light from the light guide layer ( 26 ) to the detection zone ( 24 ), the primary light ( 29 ) of the light emitter ( 16 ) is coupled into the entry surface ( 31 ) in the light guide layer ( 26 ) in such a manner that a light guide section ( 32 ) of the light path of the primary light ( 29 ) runs between the entry surface and the detection zone ( 24 ) inside the carrier film ( 5 ), and the secondary light is reflected from the detection zone ( 24 ) into the light guide layer ( 26 ) in such a manner that a light guide section ( 34 ) of the light path of the secondary light runs between the detection zone ( 24 ) and the detector ( 17 ) inside the light guide layer ( 26 ).
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