Patent ID: 7495751
Filing Date: 2009-02-24
Classification: A61B,G01N

Abstract:
1. A measuring apparatus for measuring an absorbance of a target component contained in a sample, the measuring apparatus comprising: a first light source for emitting light having a wavelength to be absorbed by the target component, a first light-receiving element and a second light-receiving element for outputting signals corresponding to the intensity of received light, a calculating part, and a memory part; the first light-receiving element and the first light source are arranged so that transmitted light emitted from the first light source and passed through the sample is received by the first light-receiving element, the second light-receiving element is arranged to receive light other than the transmitted light emitted from the first light source, the memory part stores a correlation between an output value A wherein the sample contains a component to hinder an advance of light entering the sample; the measuring apparatus further comprises a second light source for emitting light having a wavelength not to be absorbed by the target component; the second light source is arranged so that second transmitted light emitted from the second light source and passed through the sample is received by the first light-receiving element, and that light other than the second transmitted light emitted from the second light source is received by the second light-receiving element, the memory part further stores a correlation between an output value A the calculating part calculates the absorbance of the target component from an output value A